Help! Sharp LC-70UE30U 3 long flashes + 3 short flashes.

[SONY_E-WASTER]

Hello, I'm new to this forum. I like to tinker with Sony electronics, I have been lucky trouble shooting sony stuff, But I can't find much info on this Sharp TV.

The problem; plug to power>white led power indicator light is on>it turns on to the red Sharp logo>
then the android logo is displayed, lit fine then the android logo brightness varies, then lit normal, then the tv restarts and does the same startup logos over and over for 5 times then it turns off and the power indicator light flashes the trouble code 3 long blinks plus 3 short blinks .

does any one have a link to sharp tv trouble codes?
I found a similar Sharp but not the exact model had this meaning to the trouble code "Regular communication that is performed at 1 secondintervals in the normal operation is interrupted.→ Main CPU operation failure or monitor microcom-puter reception failure"
what circuit board would need to get replaced? Main board?

I try to follow a reset for sharp TVs on youtube but this tv does NOT have and input button on the side like the reset videos do.

any help will be much appreciated, thanks.

[dskall]

Re: Help! Sharp LC-70UE30U 3 long flashes + 3 short flashes.

Have you tried using the power button to reset?

Hers's one post I found.

I have the SAME problem and NOTHING would help! I then PLUGGED it in, HELD POWER BUTTON while unplugging and then plugging back in. This reset the TV and it turned on. BUT after I unplugged it, it went back to the blinking light again! I cycled it and it is working
The trick is to plug it in first.... Then do the cycle!

[SONY_E-WASTER]

Re: Help! Sharp LC-70UE30U 3 long flashes + 3 short flashes.

Unfortunately the "power button reset" did not work.
I went and ordered the FRC board. I get the same blink code with the FRC board disconnected (no screen logos on any screen activity with it disconnect of course)
I don't even know what FRC stands for just taking a chance.
I will report if it fixes it.

[lotas]

Re: Help! Sharp LC-70UE30U 3 long flashes + 3 short flashes.

Sharp code error

[SONY_E-WASTER]

Re: Help! Sharp LC-70UE30U 3 long flashes + 3 short flashes.

I couldn't open up the rar service manual file it says it's not a rar file.
but the attached pic was very helpful.
my flashing code is "MAIN PWB FAILURE" (Communication failure)

The FRC board did not fix it, no surprise.
So the problem seems to be in the main power board.
there is only one big power board.

replacing the power board should fix it this time right?

[lotas]

Re: Help! Sharp LC-70UE30U 3 long flashes + 3 short flashes.

I couldn't open up the rar service manual file it says it's not a rar file.

Update winrar