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I have a Toshiba model 37AV50U when I try to turn it on nothing no red light nothing  please help

Hi @nos7114 , Have you checked that the wall power outlet is working? Try plugging in a hair dryer etc and see if that works OK or not. If the TV is connected to a powerboard (powerstrip?) try plugging it directly into the wall outlet and see if this works. Was there a storm or power outage before the problem occurred? If so then the TV’s power board may have been damaged. Check your household contents insurance policy to see if the TV is covered for this event. If not still under warranty or covered by insurance, disconnect the power from the TV and then remove the TV back cover and visually inspect the power board (board where the power cord connects to) for any obvious damage such as burnt out or heat stressed components or blown or bulging capacitors etc. If you do find any damage or you’re not sure post some close up images so that others can see. Here’s how to do this. Adding images to an existing question Update (03/02/2020) Hi @nos7114 , Green light but no picture or anything else I assume? Could be the power board but I didn’t notice anything untoward. Couldn’t magnify it enough without blurring to see if there was any info printed on it such as STBY near a connector going to the mainboard. If there is it should have +5V DC on it when in standby mode and the red light should be on. So given that it originally wasn’t on and now it is but nothing is showing the power board is still the first to check out. I found the service manual for the TV so that should be a help as it should have schematics etc. allowing you to check and test the power board However when I downloaded it that it would not open due to a Zeus Engine missing error. Found this webpage, scroll down to 3rd post to read about Zeus Engine error and the downloads required etc so that you can view the service manual. You may have to do this if you want to use the service manual. Alternatively you could search online for (insert power board “board” number) schematic and check if there is one available It is fortunate that this manual is online as usually Toshiba documentation is not publicly available