Question about Sanyo DS31590 31" TV

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Tv won't turn on

Picture got dark and was flashing in back ground,turned off then wouldn't turn back on

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Have you checked all of the cords? something might be unplugged.

Posted on Jan 22, 2009


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Posted on Jan 02, 2017


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Dark picture

sounds like the led back light has gone on a few lines, this can cause the problems you have said it can also be a weak power board and the voltage for the leds has dropped, you will need to check the power board and check the condition of the capacitors on the power board, any abnormal looking capacitors would need changing/replacing.

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What's your problem? won't turn on..... yellow/orange light continually flashes three times...

Toshiba Regza 37in - 37HL17
TV will not turn on - Yellow power ind. Light blinks three times...
Fixed with a firmware update (hard to believe, but true). Search Google for a file named: (don't worry if the page you find it on doesn't mention the 37HL17 - it worked fine). Unzip the file, and copy the 3 folders and 3 files to the root of a small SD card. The SD card MUST be 2GB or less in size (I used a 1GB card), and it MUST be formatted with FAT-16 (not FAT-32). Mine was pre-formatted as FAT (FAT-16). The SD port is on the back of the TV behind a cover plate near the power cable. You do NOT need to remove the back cover of the TV, just the small cover plate (1 screw). UNPLUG the TV; remove the cover plate; insert the SD card (prepped as explained above); Plug in the TV; Watch the yellow lights blink, then turn blue, then go dark; UNPLUG the TV; remove the SD Card and replace the cover; Plug in the TV; Yellow lights will blink a few times (this is normal); when blinking stops, turn on the TV and you should be good to go. :-)
Pictures attached are from a Toshiba software upgrade bulletin I found online.
09adb97e-8925-4d59-b218-7443a6e64989.png 82ea33aa-2353-4e13-a5db-8be13ba85711.png

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2 Answers

Dark Picture

Your backlight transformer has failed, this is not a simple fix and requires the replacement or one or more of the boards in the back of your tv.

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Hi - I have a 42" Vizio and when the scene is dark (takes place at night or credits at the end of a film) the entire screen fades to dark. Help!

Used the tv original remote go into tv Menu goto PICTURE turn on more Backlight like +5 and like Contrast +30.The tv back ground should be alot brighter.

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LG DU-42PX12X Plasma, picture startes flashing then goes black after a few minutes

You need to get this tv service asap.i beleive that the problem is in the inverter board or yb board.

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I had lcd 42" over a year it is working find before , but now it has very dark picture

can y help me to find out what is a problem and how much to fix?

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Correct ! One set is for RGB focus and the other set is for
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