Sharp aquos LC-40LE810E

[marksik]

Re: Sharp aquos LC-40LE810E

Your post #153:
When 12v disappear (it drops to 0), PNL-POW voltage drops from 3,5v to 0,13v...
Your post #157:
PIN 12 - 3,27V PNL-POW conflict with your result in post # 153.
So is it staying at 3.27V or it drops down to 0.13V?

No, there is no conflict. When I turn on TV with its hardware switch PNL-POW has 3,5v. And in 5-7 seconds after TV is on it drops down to 0,13v.

It happens at the same time when red LED turns off and 12V at the PNL-12V drops to 0.

May be my English is not perfect but I hope the situation is clear.

[marksik]

Re: Sharp aquos LC-40LE810E

Your post #153:
When 12v disappear (it drops to 0), PNL-POW voltage drops from 3,5v to 0,13v...
Your post #157:
PIN 12 - 3,27V PNL-POW conflict with your result in post # 153.
So is it staying at 3.27V or it drops down to 0.13V?

So can I get some more advises?

[marksik]

Re: Sharp aquos LC-40LE810E

[nomoresonys]

Re: Sharp aquos LC-40LE810E

Wondering if they sent jstone86 a bad KIA378R12PI, it's strange that he got even less voltage after the change out.

[marksik]

Re: Sharp aquos LC-40LE810E

I received mine KIA378R12PI, replaced but still have the same problem

[marksik]

Re: Sharp aquos LC-40LE810E

Anybody can help me in this situation? May be some suggestions what's wrong with TV? is it mainboard or something else?

[Davi.p]

Re: Sharp aquos LC-40LE810E

Let's try to remember this old discussion without to read back all...
The resistor trick was a method to avoid changing the faulty opto, but you changed the optos so there's no need of the resistor, keep it out of the tv!

[marksik]

Re: Sharp aquos LC-40LE810E

Let's try to remember this old discussion without to read back all...
The resistor trick was a method to avoid changing the faulty opto, but you changed the optos so there's no need of the resistor, keep it out of the tv!

Yep, but I don't have old one unfortunately.

And I don't understand what could make the problem when voltage drops in 5 seconds after turning on.

Is this a power board or main board problem?

[marksik]

Re: Sharp aquos LC-40LE810E

Tried to return all original parts (except optos) and cables to their previous places. Situation is the same - after 5-7 seconds voltage drops to 0 and V-LED at fron panel starts to blink 2 times - pause - 2 times pause.

And I still try to find out wether it is the problem with power board or main board to be able to detect the problem.

[Davidpuffy12]

Re: Sharp aquos LC-40LE810E

Ok. I have bought resistors. 560 ohm for AC-DET fix.
Also bought 68k smd resistor and also 33k and 4 opto-couplers.
First I will fix that AC-DET and will post results.

Also I got crazy idea. If everything fails, is it possible to buy some lvds to hdmi converter and use this tv only for set-top box? I don't want to do that now. Just if it is possible

Do you still have the links of the things you bought to your sharp TV?
I have the same problem as you, and I would like to repair it.

[iuliantv]

Re: Sharp aquos LC-40LE810E

40LE810
for 2 blinks change Optocoupler
pc7701 pc7703 pc7702 pc7901
mai mult ca sigur doar unul e defect,dar nu am mai stat sa vad care ,e al treilea intalnit cu acest defect,la primul ma chinuit ceva ore,acum e doar rutina
more than sure only one is defective, but I didn't wait to see which one, it's the third time I've encountered this defect, the first time I struggled for a few hours, now it's just routine