Sharp TV LC-40LE600E

[Kerden]

Hi everyone?!
My Sharp TV LE-40LE600E have a black screen. It doesn't work anymore
No sound
The LED stay red and fixed (no flashing)

What could I test please?

Thanks

[Kerden]

LED Added

[nomoresonys]

What happened, one day you turned it on and just a black screen, no problems before that?

[nomoresonys]

Tv is circa 2009, try this easy test, heat all the electrolytic capacitors on the powerboard with a hairdryer for a couple minutes, then try the tv, don't wait til it cools down, try it while it's still hot, see if there's any change.

[nomoresonys]

Do NOT touch anything with your hands while powerboard is plugged in there are some potentially DEADLY voltages on the hot side of the board and some boards can hold a big charge even after being unplugged for quite a while.

[nomoresonys]

report results and we'll go from there or someone else can carry on with helping.

[lotas]

Try to reprogram the eeprom 24C64, most likely the TV is blocked due to exceeding the number of errors.

[nomoresonys]

Try to reprogram the eeprom 24C64, most likely the TV is blocked due to exceeding the number of errors.

It could be the eeprom but this is jumping the gun, there's much easier things to try before just assuming it's the eeprom. It's odd how you just presume everyone has the tools to reprogram chips.

[nomoresonys]

Try holding volume down and input WHILE plugging in tv, KEEP holding them til a display pops up, after a minute turn off tv, turn it back on and see if it works.

[nomoresonys]

I may have also presumed, did you try a simple reset, unplug tv for a minute and plug it back in and try it, no joy try as #9 post.

[nomoresonys]

Another test that works at times, heat the eeprom with a hairdryer for a minute, then try tv, see if there's any change. This isn't directed at you but here's a reminder. Do follow test procedures how they are written, when directed to use hairdryer by all means use hairdryer NOT heatgun, heatgun can overheat and kill eeprom.

[Kerden]

What happened, one day you turned it on and just a black screen, no problems before that?

Yes , exactly this situation.
One day , when I turned it on, just a black screen

No, no problem before that

[Kerden]

Tv is circa 2009, try this easy test, heat all the electrolytic capacitors on the powerboard with a hairdryer for a couple minutes, then try the tv, don't wait til it cools down, try it while it's still hot, see if there's any change.

No change, black screen

[Kerden]

Try to reprogram the eeprom 24C64, most likely the TV is blocked due to exceeding the number of errors.

Thank you, I have no tool to do this, but I will keep this in mind

[Kerden]

I may have also presumed, did you try a simple reset, unplug tv for a minute and plug it back in and try it, no joy try as #9 post.

Yes, I have tried this. It just worked once

[Kerden]

Try holding volume down and input WHILE plugging in tv, KEEP holding them til a display pops up, after a minute turn off tv, turn it back on and see if it works.

I have just tried and the black screen is always there

[nomoresonys]

Staying with easy things first, check all the diodes and resistors on top of the board, google is your friend for how to videos if needed.

[lotas]

Why check something, heat something, press something, if the problem is in the eeprom firmware.

[nomoresonys]

Well lotus, can you prove that the eeprom is faulty? If not then that's why we check other things

Note: admin edit rude section out. Keep it polite

[lotas]

I'll see how you can use your narrow-minded direction to find the cause of the malfunction...