Toshiba 55l621u Keeps Turning Off Feb 11, 2020 · TV Turns On, Shows Logo, and Then Turns Off Hey y’all, No sound either, Jan 1, 2024 · Dehumidifiers are great appliances to control humidity levels, It keeps turning off, Turning off the automatic power-off feature Making your TV turn on faster Chromecast built-in TV FAQ Video and audio General Specifications 43" model (43L621U) Dimensions and weight Screen Tuner Inputs Audio Power 49" model (49L621U) Dimensions and weight Screen Tuner Inputs Audio Power 55" model (55L621U) Dimensions and weight Tuner Inputs This function allows the connected HDMI-CEC compatible device to turn on the TV and switch to its input source automatically, It is not the fan or a virus/worm etc as I have checked for all of that, When first turned on it works fine, then after the splash screen shuts off completely, Whether you are facing issues such as frozen screens, audio problems, or connectivity glitches, a hard reset can often solve these problems and restore your TV to its factory settings, They'll hit 20% and near instantly say that the update has failed, However, here are some possible reasons why your Toshiba smart TV keeps turning off: 1, View the Toshiba 65L621U manual for free or ask your question to other Toshiba 65L621U owners, Hold a bright flashlight up against the screen in a dark room and turn it on and see if the image continues after the back light turns off, I have an old broken Toshiba L621U (model 55L621U) that I need support for When the device is powered it displays the toshiba logo before quickly turning off, We plug it back in and a few seconds or mins late it turns off, The TV powers on, but the screen stays completely blank, and there is unusual behavior at startup, which suggests a Read the Toshiba 55L421U User Manual online or download the PDF, Pay this no attention just would turn it back on ,tv would work perfect, Prior - Toshiba Television Having trouble with your Toshiba Fire TV? Discover expert answers for when it turns on but shows only sound and a black screen, When starting a new thread, please put the make AND model of your device in the thread title, I replaced the main board to no success, All inputs yes, The LED on the front right stays red, I have a toshiba chrome cast tv but it goes blank when i turn it on, Oct 24, 2023 · I'm sorry to hear the inconvenience you're experiencing while turning off the sleep mode on your Toshiba Fire TV, It’s turning itself on overnight which then turns the connected PlayStation on too, This can be due to a dirty filter, clogged coils, or something obstructing airflow through the unit, Just follow these steps: Jan 25, 2019 · I have a Toshiba 55" model 55L621U TV, Turning your TV on or off Adjusting the picture One-year limited warranty - Toshiba Televisions Troubleshooting Save Visit http://us, The problem of a microwave that keeps shutting off can be extremely frustrating and potentially even dangerous, I’m having this issue too, Some possible causes include: – Overheating: If your laptop’s fan is not functioning properly or the vents are blocked, it can overheat and automatically shut down to prevent damage, Here is a list of the measurements I took, When I plug it in and turn it Nov 22, 2024 · How to Stop Computer From Turning Off By Itself in Windows 11 By following the steps below, you’ll adjust your Windows 11 settings and check for potential hardware problems, helping prevent your computer from turning off unexpectedly, I took the cover off seems like power board is shutting off, The TV screen turns on for a few seconds this place Toshiba Chromecast then turns off, If you turn the tv off, when you turn it back on, it keeps turning off and on for 15- 20 min, Dec 20, 2023 · Understanding The Common Causes Of Flickering In Toshiba TVs Flickering is a common issue that many Toshiba TV owners may encounter, This VCR keeps shutting down, the fix was simple just needed to bend the ribbon cable that went to the DVD laser head, toshiba, About 3 years old, com May 1, 2025 · If your Toshiba TV keeps turning off unexpectedly, it can be more than just annoying—it might be a sign of power issues or internal glitches, Standby light starts to flash, like normal when turning on, and then tv and stand by light turns off, It just turns on, displays the “Toshiba" logo momentarily and then goes black, V, Power saving settings: Many smart TVs have power-saving settings that turn off the TV after a certain period of inactivity, It’s less than 2 months old, View the Toshiba 55L621U manual for free or ask your question to other Toshiba 55L621U owners, Problem: TV turns on, displays flash screen with logo, then turns off, and a few seconds later the red power light turns off, then TV won't turn back on, Also be VERY descriptive of your issue, that way you'll get the best answer possible! Jun 26, 2022 · How do I disable the inactivity setting so the Fire TV doesn’t keep turning off? My Toshiba Fire TV turns completely off after 5 minutes of inactivity, Unplug from back wait 30 sec turn on and logo comes up then nothing Technician's Assistant: How long has this been an issue with your 4K-? What happened right before this? Aug 2, 2019 · I have a 50 inch toshiba fire tv, Issues with the power supply can also lead to the Fire TV turning off, Find your television and view the free manual or ask other product owners your question, You can also check whether there’s a software update available to fix any potential bugs, Most of my research says that this is a power supply issue, but I have seen some people say it could be a mainboard issue, Manual Toshiba 43L621U, Resetting can help issues such as when the TV has stopped responding to remote signals, Nov 14, 2025 · Q: How do I troubleshoot my Toshiba AC that keeps turning off? A: Start with basic checks like cleaning or replacing filters, inspecting thermostat settings, testing electrical breakers, and looking for signs of refrigerant leaks or frozen coils, Feb 14, 2022 · It's frustrating watching a TV when the screen keeps flickering as it affects one's vision, The TV will not retain any of the settings in the menu, When I change the settings and turn the TV off and then on again, they stay, By following the instructions outlined in this guide, you will be able to reset your Toshiba TV easily, allowing you to Manual Toshiba 55L621U, Software updates can cause your Fire TV to restart or turn off, We have 3 Toshiba 55L621U 4K Smart TV manuals available for free PDF download: User Manual, Quick Setup Manual User Manual This is the main product document for model 55L621U, Is your Toshiba TV randomly turning on or off by itself? Don't worry, we've got you covered! In this video, we'll walk you through simple steps to troubleshoot and fix the issue, ensuring your TV Discover why your Toshiba TV turns off by itself with Auto Power Off, remote control, and firmware update advice, Jul 21, 2022 · Toshiba TV keeps turning off mainly due to the sleeper timer being On, remote malfunction, outdated TV software, power supply problem, overheating, and lousy HDMI cable, Reply reply bigt43549 • Customer: my 55l621u toshiba hdtv won't turn on, I’ll also go over what you should do if your furnace keeps turning off, Manual for Toshiba 55L621U LED Television, Hi! My mom has a Toshiba flat screen TV, model number: 55L621U, Since I bought it used, ) - LED - 2160p - with Chromecast Built-in - 4K Ultra HD TV, I know it's not the best, but am relishing the big bang for the buck: a 55 inch 4K GoogleCast LED for $480+tx, the Toshiba 55L621U, Jul 28, 2022 · Through the Toshiba TV problems and solutions guide, you will get to know about your TV’s major problems, including TV won’t turn on, TV keeps turning on, TV won’t turn off, and TV keeps turning off, Find expert advice on fixing your Model 55L621U TV that turns off after displaying the Comcast screen, Not sure how I can test this, My friend said the right 1/3rd of the screen was Customer: I have a four year old model 55L621U and when you plug it in the screen lights up with TOSHIBA and the goes out and will not respond to anything on remote, I have tried resetting it by unplugging it, but no luck, Owner of AV Installation, OEM and Repair company 66,285 satisfied customers Specialities include: Camera and Video, Car Electronics, Consumer Electronics, Electronic Musical Instruments, E-Readers, Game Systems, GPS, Home Cinema System, Home Security Systems, Home Mar 16, 2024 · In this article, we will provide a step-by-step guide on how to hard reset a Toshiba TV, Jun 22, 2020 · The file format is pdf, 101 pages, you can download this manual here , My Toshiba 61H70 won't work, Jul 8, 2014 · Toshiba Satellite keeps turning off Page 2 - Seeking answers? Join the Tom's Guide community: where nearly two million members share solutions and discuss the latest tech, The Sleeper Timer / Energy Savings function is on Televisions have a sleeper timer function that automatically turns off after idle for too long, Read the full For what reasons does Fire TV keep turning off? Amazon Fire TV devices can sometimes turn off due to overheating, How much is the expert?15+ years in the field, Everything has been checked (fan, drivers, battery, charger, etc, The bedroom one is setup, Toshiba tv 55L621U, turns on then immediately turns off, I can't even access them because the tv turns off too fast, Additionally, the document applies to other Toshiba models: 43L621U, 49L621U, 65L621U The file format is pdf, 101 pages, you can download this manual here , Toshiba How-To Perform a System Reset on you Sep 5, 2023 · Does your TV keep restarting? Here are 7 fixes to the most common causes, so you can enjoy watching your TV normally again in no time, and I am wondering if that is the cause Reset your Toshiba television set and return it to factory settings, Learn troubleshooting tips Apr 20, 2021 · This is a very specific issue but I hope this helps someone, Oct 6, 2014 · I am at my wits end, When TV is on, a short press will change inputs, a long press will turn off TV, Manuals and User Guides for Toshiba 55L621U 4K Smart TV, I've tried unplugging it and it will turn on of it's on volition then but after the power indicator blinks a few times and the Toshiba/Chromecast start up shows the screen goes dark, the power indicator The Toshiba 55L621U is a 55-inch LCD Ultra HD TV with a native resolution of 3840x2160 (2160p), In many cases, a firmware update or factory reset can help fix the problem and get things back to normal, For more information, see Remote control on page 16, ), so I don't know May 18, 2020 · Hi, I have a Toshiba laptop that its suddenly shutting down, Here's a guide to 10 of the most common problems you can expect to encounter at some point of owning your Toshiba, and some quick ways that can both diagnose and attempt to fix the issues before you resort to breaking-out that warranty or sending it back to the store, When you turn your dehumidifier ON it will run until selected humidity level is achieved, My computer, while watching NETFLIX just Learn more with 153 Questions and 231 Answers for Toshiba - 55" Class (54, I am at my wits end, What chould be causing it? So, why does my air conditioner turn off by itself? Discussed are 10 issues that can can turn the air conditioner off and how to fix that, Screen stays on, half of it seems dim Aug 3, 2020 · User Manual This is the main product document for model 49L621U, Try to do all the resettings unplug and everything else still had no success Technician's Assistant: How old is your 55L621? Customer: Says 2017 on the sticker Technician's Assistant: Does the TV menu work? Do you have the same problem on all sources Hey TVRepair Fam, I'm having some problems with this Toshiba 55L621U, The LED on the front right bottom stays red after the screen goes black, Fire TV Brands like Toshiba, Panasonic and TCL with Fire TV built in ReplyReplyReply I have this question too + 6 37 Answers34889 Views Top Rated Answers Chase M, Aug 24, 2016 · Check out this bargain bin - er bargain *big* screen TV, Read helpful reviews from our customers, Tuned (all enhancements off and using test patterns) Colors are accurate and glorious, Oct 16, 2021 · You just bought yourself a new Toshiba Fire TV, and you’ve been using it for a few days, but now you are having issues, So I have had my fireTV for a couple months now, We know that the screen is going bad because the left side is starting to go dark but, logically, that shouldn't effect the tv staying on, correct? Nov 17, 2018 · How do I get my TV to turn on? It was working fine then we moved and plugged it back in and the red light blinks and Toshiba comes on the screen then it shuts off Update (11/17/2018): Model number is 49L621U I tried the power reset didn't work - Toshiba Television Toshiba TV turning On and OffQuick and Simple Solution that works 99% of the time, Learn more with 153 Questions and 231 Answers for Toshiba - 55" Class (54, Prior - Toshiba Television Discover more answers Our projection Toshiba Tv keeps turning off by itself, Here’s the problem I’m having with nothing else plugged in: Turn TV on Toshiba logo shows for a split second before going to black LED/power light blinks 8 times Here are some images of the boards, Newson's Electronics reducing e-waste one repair at a time!, When first plugged in Toshiba splash screen is displayed then goes away after 6 seconds, In the past day or so it has stopped working, it doesn't respond to the remote and the single button (boo hiss) is also useless, So what is the issue and is it easy to fix? The issue with your TV could be… Continue reading Toshiba Fire TV Keeps Turning Off (How To Fix It) May 31, 2025 · Fix a TV that keeps turning off—check power settings, overheating, faulty cables, or software issues with these troubleshooting steps, Is your Toshiba TV stuck in an endless loop of turning on and off? In this video, we’ll guide you step-by-step on how to fix your TV from constantly restarting, Update the TV to the latest firmware patch and perform a proper power cycle, I verified the power outlet, Jun 30, 2024 · FAQs FAQ 1: Why does my Toshiba laptop keep shutting down randomly? There could be various reasons why your Toshiba laptop keeps shutting down unexpectedly, Mar 8, 2020 · Hi, There is seemingly no way at all to adjust or turn this off, I unplugged it, and plugged it back in several times, We have another one that’s identical that we bought at the same time and that has no issues, Down August 5, 2024 at 3:01 PM Aug 17, 2023 · If your Toshiba TV turns on by itself, follow the steps in this guide to get your TV working normally again, If you can't get your Toshiba TV to turn on and you are having problems with it, this video will help you troubleshoot your issues and get it back up and run Jan 27, 2023 · Does your AC keep turning off by itself? It may be short cycling, It would switch off while watching/recording VHS es and DVDs, Sometimes I get to use it for a few hours and other times it turns off immediately, Sep 16, 2019 · I have a Best Buy television made by Toshiba with the model name 43L621U, I bought two, How to ACTUALLY Fix a Toshiba TV That Won't Turn On (Quick Wins) Tech Tests & Troubleshooting 30, Very disappointing feature, Another Jul 29, 2023 · We’ll provide step-by-step solutions to help you get your TV back up and running in no time, Manual Toshiba 55L621U, Sound needs a sub, I have a JVC Smart T, 4K subscribers Subscribed The page is about user manuals, installation instructions, specifications, pictures and questions and answers of Toshiba 55LF621U21 View and Download Toshiba 43L621U instruction manual online, Suggestions? Technician's Assistant: Can you see a light on the edge of your Toshiba TV? If so, is it solid or blinking? Customer: No, the light goes away when it shuts down Technician's Assistant: Have you tried to power reset your TV (unplugging the power for 1-2 minutes, then Toshiba television manuals, However, what if it keeps shutting off before desired relative humidity is attained? What if your dehumidifier […] Manual Toshiba 65L621U, Toshiba_43L621U_49L621U_55L621U_65L621U_16-0742_QSG_ENG_V3_Final, We would like to show you a description here but the site won’t allow us, ), so I don't know Manual Toshiba 65L621U, A faulty thermostat or compressor overheating can also cause your portable AC to turn ON and OFF repeatedly, It shuts off after approx 5 mins of inactivity, If your Insignia/Toshiba/Amazon Fire TV keeps restarting/rebooting/turning off and on repeatedly, then watch this video to learn how to fix it, Read the Toshiba 55L421U User Manual online or download the PDF, When they get too hot, they automatically shut down to prevent damage, Solution: If your TV does as stated above, especially if there is a rattling noise See full list on whatsabyte, I have a Toshiba 55L621U that turns off soon after it is powered on, Jul 14, 2025 · Has your smart TV been unexpectedly turning itself on or off? It's probably a setting that needs to be tweaked in the television's menus, 6" Diag, ai 1 10/12/2016 4:14:59 PM Manual Toshiba 55L621U, Apr 2, 2020 · Toshiba 55L621U black screen, I pause to go do something and come back and it has powered down, If you need me to take a picture of anything else, just ask: We would like to show you a description here but the site won’t allow us, 2, May 24, 2019 · I have a SATELLITE model number PSLB8U-0V302L Tthat has the issue of turning off constantly, Toshiba 55L42IU, I love it!! However the single most IRRITATING thing about it is its auto turn off feature, Whether it's shutting off after just a few I dont have access to real-time information or data of your Toshiba smart TV, The red light blinks 8 times and then stays solid red for about 30 seconds then turns off, Shows error when attempting firmware update, Mar 26, 2022 · My friend dropped off his Toshiba (Best Buy) 55L621U for me to try to fix, No power button on the tv/remote seems to work after this Manual Toshiba 49L621U, You can turn off the sleeper timer or lengthen the intervals, This is normal and usually resolves by itself when the update is complete, Sep 4, 2024 · Do fire TVS turn off automatically? What to do if Toshiba Fire TV keeps restarting? Fixing a Toshiba TV that Won’t Turn On FAQs Where can I find the model and the serial number of my television? Am I able to use a universal remote with my television? Will my television receive updates automatically if I connect it to the Internet? My model is the All in all it is an awesome smart TV, but like many of these modern sets they're not without their faults, com/tv/research-center/technology-guides to learn more tips for your Toshiba television, It also stays on during this screen so that rules out the power boards, How do I stop this ? It’s driving me crazy, This helps conserve electricity and prevent screen burn, Each time, the splash screen comes up, the red light blinks Jun 24, 2021 · I have a 5 year old Toshiba model 55L621U TV Today the picture just disappeared while watching, Check your TVs settings to see if this is the case, just got it plugged it in and shows Toshiba then turns off Technician's Assistant: Can you see a light on the edge of your 55L621U? 55L621U: Toshiba TV will not retain settings, help? Just purchased this TV last Saturday, One possible cause of flickering is a weak or fluctuating power source, Also, the other factors are the REZGA link signal problem, selecting the wrong energy-saving options, failed LED, defective picture tube, and automatic power-off switch is On, I recently got this tv and it is giving me problems, Your TV keeps turning off on its own without you making the commands, It comes on, shows the Comcast, It worked for 2 years and now when you turn the TV, the splash screen (Toshiba Chromecast Logo) comes on and then goes black, When I turn the TV off for a long period of time (say, a work day) and then come home the settings are reset, 4K YouTube videos are amazing, Nov 5, 2023 · A Toshiba TV that keeps turning on and off can be a nuisance, but with the right approach, it can often be fixed, I can stay in BIOS as long as I want, and I also can run memtest86 as long as I want, I need to measure voltages on several components, so any guidance or a manual link would be greatly appreciated, Aug 25, 2018 · I am needing help with regards to my Digilogic VHS/DVD Combi Player, Nov 1, 2021 · To keep a Toshiba Smart TV from turning off, you can disable the REGZA-Link, replace the LED strip, or adjust the energy savings mode, Mar 6, 2025 · Why does my TV turn on by itself? Why does my TV keep turning off? This post will tell you the answer and offer corresponding solutions, Understanding the common causes can help you troubleshoot and find a solution to this problem, And when I say it goes black, I mean off, I unplug it and it comes back on, then shuts down after a minute or two, Adequate humidity in your living space increases comfortability and keeps you and your home healthy, Ive got the device opened in front of me right now and there are no visiblely leaky compacitors or other obvious problems I can see, It is not the battery or power cord as the battery is new and the power cord is fine, Jan 25, 2022 · I have researched 4 ways you can stop your Windows 10 PC from randomly shutting down, so you can work without fear of being interrupted while doing important things on your computer, I tried both series' firmware but they both fail when I initiate the update, Dec 23, 2024 · Figure out why your TV turns off on its own with these tips and fixes Is your TV randomly turning off? Follow the troubleshooting steps in this guide to easily fix the problem yourself, or figure out if you need to buy a new TV or schedule How to use this site? Our goal is to provide you with a quick access to the content of the user manual for Toshiba 55L621U, It is Internet-enabled and can access online content, including movie streaming and other services, May 5, 2013 · My toshiba satellite p755-s5320 keeps just turning off (not shutting down) just click off, Best Buy has honest and unbiased customer reviews for Toshiba - 55" Class (54, Any ideas? The buttons on the Toshiba TV remote function the same as the corresponding buttons on the remote control that came with your TV, Get solutions now! Jun 24, 2021 · I have a 5 year old Toshiba model 55L621U TV Today the picture just disappeared while watching, Here are a few different methods to fix your Toshiba TV if it has a black screen, Learn about incorrect modes, power issues, and overheat sensor How do I stop my fireTV from turning itself off, Additionally, the document applies to other Toshiba models: 43L621U, 55L621U, 65L621U The file format is pdf, 101 pages, you can download this manual here , It's always has restarted itself intermitantly while watching it, It is not a sleep/clock/timer setting, Jul 18, 2023 · Repeated shutting OFF or short cycling of portable AC is usually associated with the freezing of cooling coils, This product currently has 12 frequently asked questions, 0 comments and has 1 vote with an average product rating of 0/100, Get solutions from experienced technicians, Toshiba Television Problems: 7 Common Issues (Solved) Common Toshiba TV Problems involve, not turning on, poor picture quality, no sound, remote control unresponsive, and not connecting to Wi-Fi, This was the problem: you turn the TV on and the splash screen (Toshiba Chromecast Logo) comes on and then goes black, The red light in bottom corner isn't on, This manual provides instructions for setup, connecting devices, using features and troubleshooting, If you still have image but no back late then you need to replace the backlight LED strips, Oct 11, 2025 · To fix the laptop turning on and off repeatedly, check your device for high temperature and check the battery and charging cable for fraying, To Fix A Toshiba Tv That Turns On And Off Repeatedly, Assess The Power Supply Stability, Check For Software Updates, And Perform A Hard Reset To Eliminate An Manual Toshiba 55L621U, This happens quite frequently and frankly it's really annoying, especially when watching a movie, Model 55L621U, Have you ever settled in for a cozy evening of binge-watching your favorite show, only to have your Toshiba TV mysteriously turn off at the most climactic moments? It’s a frustrating experience that leaves many users scratching their heads and wondering, “Why does my Toshiba TV keep turning off?” In this article, we will delve into this common issue, exploring the possible reasons behind Jul 14, 2025 · Has your smart TV been unexpectedly turning itself on or off? It's probably a setting that needs to be tweaked in the television's menus, Here's what you can do to fix the issue, So, if your Toshiba TV screen keeps flickering while you're Customer: Won't turn on, Aug 4, 2023 · If your Toshiba Fire TV is turning off by itself, make sure that the inactivity timer is turned off, I Toshiba 55L621U - Shuts off at powering on after five to ten seconds, A week now i have not tried - Answered by a verified TV Technician Aug 17, 2023 · If your Toshiba Fire TV keeps restarting, follow the steps in this Fire TV troubleshooting guide to quickly fix it, Learn the most common reasons your AC is turning on and off & how to fix it, HaveTV for about 36 months now when I first bought it I noticed that the TV was sometimes turn itself off thought it was a energy saver feature or timer, Sep 9, 2019 · After I plug the tv in, screen says toshiba Chromecast built in, Discover the reasons behind why your portable AC keeps turning off and on and how to fix it, As Mar 27, 2006 · I have a toshiba tv that is 15 yrs old, By checking the power supply, addressing software glitches, and considering hardware issues, you can restore your TV’s functionality, Which I have, and now sound is May 23, 2023 · Your Toshiba TV screen is flickering as a result of loose or damaged cables, electrical appliance failure, overheating, incorrect display settings, or power supply problems, I unplug the TV wait a minute or so, when I plug it back in the red light blinks, then the Toshiba start up screen comes on and about 10 seconds later everything shuts off including red light Power On/Standby LED Back Power/Input button Press to turn your TV on/off manually, Hi, My Toshiba 55L621U TV has started experiencing issues, and I’m looking for a service manual with electronic schematics to help me diagnose and repair it, I was running into an issue where the TV would show the splash screen but then shut off immediately after, I took it to a tech and he kept it for two days and he said it Customer: Toshiba tv keeps shutting down, I have bought it to Geek Squad six times and my Toshiba satellite still keeps shutting down at random, Here are a few replacement TV options:Budget option (Amazon USA Link) - http Can you answer questions about my toshiba TV? Model 55L621U Rev, Using the online preview, you can quickly view the contents and go to the page where you will find the solution to your problem with Toshiba 55L621U, Jul 2, 2025 · #smarttv #fix #trending Is your Toshiba TV shutting down every few seconds like it’s taking an endless nap? You’re not alone! In this quick 2-minute explain Discover effective solutions for your Toshiba portable air conditioner that keeps turning off, 12 ways to troubleshoot a Toshiba TV That Keeps Turning Off 1, Press Left or Right button to enable or disable the feature, When it’s on, it randomly changes source, volume and channel regularly, HDMI® (BEST) Best video quality Note: Connect an ARC-enabled home theater receiver Customer: I just hooked up a 55in Toshiba model 55L621, Electrical fluctuations or voltage drops can result in the TV screen flickering, View the Toshiba 49L621U manual for free or ask your question to other Toshiba 49L621U owners, Aug 9, 2021 · Technical questions about your defective television, projection screen, LCD/plasma, or any other type of video device, Power LED blinks 9 times, then goes off after about 45 seconds, View and download the pdf in English, View the Toshiba 43L621U manual for free or ask your question to other Toshiba 43L621U owners, As per the concern, try enabling "Alexa Anytime" using the "Voice Commands When TV Screen is Off", But the other day while it was on, it shut off and wouldn't turn back on, How old is it? Customer: Toshiba 4k- model #55L621U Technician's Assistant: Does the TV menu work? Do you have the same problem on all sources/inputs? Customer: Nothing works, toshiba model 55L621u, Nov 24, 2022 · In this article, I’ll go over a few different causes of a furnace that keeps turning off, Technician's Assistant: Are there any objects blocking the signal between the remote and the 55L621U? Customer: no it worked fine last night and now this today Technician's Assistant: Have you tried removing the batteries and Aug 4, 2023 · Understand why your TV turns on then off immediately and explore easy fixes to solve this frustrating issue quickly,