Help with a Sharp LC-60LE835U

**freakaftr8** · 10-15-2013, 11:46 AM

Re: Help with a Sharp LC-60LE835U

Why dont you try to disconnect the t-con board fom the mainboard and power up. See if the code changes. If not then I believe there is some internal communication error within the mainboard and you could try a new one

also while it's on before it restarts wuth the clicking before shutdown and the error code take a flashlight and shine it into the screennand seenif something appears. Look tonthe upper right corner area for the input to show up.

**tom66** · 10-15-2013, 11:51 AM

Re: Help with a Sharp LC-60LE835U

A communication error can be caused by a low supply voltage feeding one of the processors. On a 32" Sharp of mine it was caused by a 3.3V rail measuring 2.4V on the main board.

**OneAn9ryN00b** · 10-15-2013, 01:19 PM

Re: Help with a Sharp LC-60LE835U

Originally posted by freakaftr8

Why dont you try to disconnect the t-con board fom the mainboard and power up. See if the code changes. If not then I believe there is some internal communication error within the mainboard and you could try a new one

also while it's on before it restarts wuth the clicking before shutdown and the error code take a flashlight and shine it into the screennand seenif something appears. Look tonthe upper right corner area for the input to show up.

There were two sets of wires going to the T-Con board, a ribbon cable which i would assume is the lvds cable, and another with three wires grouped...ether way, I unplugged both and still the same action with clicking, and same code afterwards. I plugged everything back in, and tried flashing a light, and didn't see anything, but its facing the the window right now and its daylight....but i had also checked that to begin with the backlight error iv seen all over.

Originally posted by tom66

A communication error can be caused by a low supply voltage feeding one of the processors. On a 32" Sharp of mine it was caused by a 3.3V rail measuring 2.4V on the main board.

Out of curiosity how did you fix it, did you just buy a new board, or replace caps and such.

This might be hard to describe without a video, but I did a little testing with my multi-meter though it was hard to get to some of the pins. and also hard to tell what each pin is supposed to read while off, and on, but on the pin 5 that i tested on it was supposed to be 13.5v. with it turning on, it jumped to like 40 or 50 something every time it clicked on and stay there for a few seconds, and then do some more jumping in between after that, before going down to the 13.5 and then after that, it would slowly lower the voltage from 13.5 to about 1-2v, then click off and back on, and repeat the process....but testing it again, i get 12.9v....so just thought id throw that out there...then again, maybe the probe did have a good enough ground before not sure.

**freakaftr8** · 10-15-2013, 01:27 PM

Re: Help with a Sharp LC-60LE835U

Make sure it wasn't reading in Mv.

**tom66** · 10-15-2013, 02:00 PM

Re: Help with a Sharp LC-60LE835U

I found a service tip from Sharp which said "replace this part". I confirmed the diagnosis by freeze spraying that part, because that made the set work again.

**OneAn9ryN00b** · 10-15-2013, 06:46 PM

Re: Help with a Sharp LC-60LE835U

Originally posted by freakaftr8

Make sure it wasn't reading in Mv.

I had it set to DC.

**OneAn9ryN00b** · 10-17-2013, 05:22 PM

Re: Help with a Sharp LC-60LE835U

Got the main board in today and replaced it, and its working, yay.....but now another slight problem.....I have a brown are in the bottom left-center where it looks like maybe a set of led's or went out. Would this be a t-con board issue, or bad set of led's? And if it is the led's, how hard is it to just replace, or repair the led's in the section? Or is is just going to cost me to much, and to just live with it?

TIA

Attached Files

**tom66** · 10-17-2013, 05:35 PM

Re: Help with a Sharp LC-60LE835U

Yeah that looks like bad LEDs to me but double check all panel connectors from the LED driver board.

**OneAn9ryN00b** · 10-17-2013, 05:49 PM

Re: Help with a Sharp LC-60LE835U

Originally posted by tom66

Yeah that looks like bad LEDs to me but double check all panel connectors from the LED driver board.

Damn......I'll look at that later....how hard is it to replace/or fix led's.

**tom66** · 10-17-2013, 05:55 PM

Re: Help with a Sharp LC-60LE835U

It's like Xmas lights. One LED goes bad, all in that strip go dark. You can use a coin cell battery or a good multimeter (Fluke et al) to test them. Most cheaper meters don't give a higher enough open circuit voltage for testing white LEDs (3V minimum, 3.5V~4V ideal.)

**freakaftr8** · 10-17-2013, 08:31 PM

Re: Help with a Sharp LC-60LE835U

Wow another Sharp with LED failures. Im actually quite surprised the tv didnt throw a 1-1 code!

**OneAn9ryN00b** · 10-17-2013, 09:04 PM

Re: Help with a Sharp LC-60LE835U

Originally posted by freakaftr8

Wow another Sharp with LED failures. Im actually quite surprised the tv didnt throw a 1-1 code!

I know...i saw your thread on your 80" monster. No codes yet...but I have only turned it on twice....so that code could be coming.

Any good guides out there on how to do this, I tried searching youtube, but nothing much other then how to convert to led.

BTW guys, you have been so helpful and thank you very much!

**freakaftr8** · 10-17-2013, 09:29 PM

Re: Help with a Sharp LC-60LE835U

Are the leds set up in clusters on the power board? Like 20 blue pins in a connector and 20 to a white or something like that? I would reseat the connections on the power supply for starters. Maybe the orig problem caused the mainboard issue?

**OneAn9ryN00b** · 10-17-2013, 10:08 PM

Re: Help with a Sharp LC-60LE835U

Originally posted by freakaftr8

Are the leds set up in clusters on the power board? Like 20 blue pins in a connector and 20 to a white or something like that? I would reseat the connections on the power supply for starters. Maybe the orig problem caused the mainboard issue?

ok now im confused..I believe i read somewhere that this is an edge lit led. I have 4 ribbon cables going to the panel its self from the t-con. Which are the only cables connected to the panel. I unplugged the cables, and re-seated them but still nothing, actually got it to do a 5-2 code, but that went away after i plugged back in the cables. now on the underside it looks like there are two more ribbon cables, which im going to assume do directly to the led's, but couldn't actually re-seat the cable, because its under the metal housing of the tv frame its self... iv attached a couple of pics to show what im talking about.

Attached Files

**freakaftr8** · 10-17-2013, 10:22 PM

Re: Help with a Sharp LC-60LE835U

Disregard what I said about the blue and whire connectors. The 5-2 code is a tcon error. Thats normal if the connections are removed from there. maybe I'm missing something but I'm not seeing where the led cables going to the panel on your pictures at all. That's an interesting chassis

**freakaftr8** · 10-17-2013, 10:25 PM

Re: Help with a Sharp LC-60LE835U

I believe it was the white and black connector that you removed from the tcon. Thats power to the tcon. That will give you a 5-2 code. can you take a full picture of the power supply please

**freakaftr8** · 10-17-2013, 11:26 PM

Re: Help with a Sharp LC-60LE835U

Originally posted by OneAn9ryN00b

I know...i saw your thread on your 80" monster. No codes yet...but I have only turned it on twice....so that code could be coming.

Any good guides out there on how to do this, I tried searching youtube, but nothing much other then how to convert to led.

BTW guys, you have been so helpful and thank you very much!

Lol yea that thing is a beast! Its set up in my living room now wall mounted and all. It works great as kong as I dint unplug it. If I do its holding vol+ ch- while pressing power to get ut back up and running. Still working like this (fingers crossed). I actually removed and re installed the panel myself. Quite a challenge.

its got some odd balancer issue that thinks theee is a problem while theres actually not. Prob power supply. Yours though is really odd its powering up like it is.

**OneAn9ryN00b** · 10-17-2013, 11:29 PM

Re: Help with a Sharp LC-60LE835U

I got a pic of the whole chassis, and one of just the power board.

Attached Files

**OneAn9ryN00b** · 10-17-2013, 11:36 PM

Re: Help with a Sharp LC-60LE835U

Heres a pic from before with the highlighted area of where I couldn't get to, and another at a different angle to get a better picture of it.

EDIT. this is the same area on the lcd of where its dim.

Attached Files

Help with a Sharp LC-60LE835U

Help with a Sharp LC-60LE835U

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Related Topics