Sharp Aquos

[lapisto]

Hi,

I have a SHARP AQUOS TV, Model Number: LC-37D62U, which I purchased a few years ago. It is now no longer turning on.

It clicks on, but then goes into a pattern of : (x=off) (0=on)

----(0) 2x---------(x)------------(0) 2x----
(Power) (Sleep) (OPC)

Over and over, I have researched this problem but for nearly all others the power led powers on again, since this is not the case for me, do you think I can fix it without having to get a new power or main (or other) board?

I have searched and tried all the things I can do without opening it up and none worked. Called SHARP (and their affiliated repair shop) and they told me the pattern I have described requires service so basically it can't be fixed without opening it up, and they say it will probably cost a few hundred bucks.

I couldn't find anything online about being able to repair it myself, I have never fixed a tv (hardware wise) before but I have done a few pcs, laptops and 2 ps3. Do you guys think I can do this? Or a TV is a whole different type of thing to try and fix yourself?

Thank You.

[randtek]

Re: Sharp Aquos

I am not clear on your description of the error code being displayed. To make it simple, just count the blinks for each LED individually, ignoring the others. Each one represents a number. For example, 2 blinks (on) then a pause (LED OFF). So, just tell us the number of blinks for each LED.

If it is POWER LED 2, OPC LED 5, that would represent a Panel 5 volt failure.

Yes, I think you can probably fix the TV.

[selldoor]

Re: Sharp Aquos

Well here is a good start - found a service manual for you.
Flash codes page 40

http://www.scribd.com/kiotosong/d/72452455-LCSPMPWBCGDT

Hours of reading as you cant watch tv

[lapisto]

Re: Sharp Aquos

The problem is when I plug it in, I get the POWER and the OPC lights flash twice and then nothing, and then the same thing keeps on happening. If I try to power the tv on, it clicks on then goes off with another click. (BTW I don't know what I did but by general cleaning of the insides I managed to get the time between the two clicks to be longer, that lasted for 5 min however. It might be just the cool weather that hit it lol.)

lol, I'll read through the manual thx.

[lapisto]

Re: Sharp Aquos

BTW I got the TV to turn on by holding CH DOWN and VOL UP but nothing came on however I didn't even get a backlight coming on so its not a bad thing. ? The TV will just do that regardless ? Because I read that if the backlight came on and there was no picture or sound then it would not be repairable?

[selldoor]

Re: Sharp Aquos

BTW I got the TV to turn on by holding CH DOWN and VOL UP but nothing came on however I didn't even get a backlight coming on so its not a bad thing. ? The TV will just do that regardless ? Because I read that if the backlight came on and there was no picture or sound then it would not be repairable?

Not sure what you mean by " got the tv to turn on"? do you mean you had sound? what did the leds do?

What would be useful is if you can connect up a continous known source like a dvd and then "get the tv to turn on" report if the sound is ok and if you can see a very dark picture on the screen perhaps lookng very close up and using a flashlight. Can you adjust the volume in that state or change channels?

[lapisto]

Re: Sharp Aquos

sorry what I mean is I got the power LED to go on and stay on, instead of just clicking and going back into the power and opc flashing twice pattern. But no I got nothing other then the power LED going on and staying on, no light, and not able to use any input, connection, or even see any menus or turn volume up or down.

[budm]

Re: Sharp Aquos

So right now you are no longer getting flashing error codes?

http://elektrotanya.com/?q=showresul...ia=tv&kat2=all

[lapisto]

Re: Sharp Aquos

I still am, I was just saying that if I were to hold the CH DOWN and VOL UP then press the Power button I would get a steady power LED on instead of the flashes, but it would be pointless because everything is the same and I couldn't even turn off the tv without unplugging it.

[budm]

Re: Sharp Aquos

OK. I just download the service manual, need to do some studying first.

[lapisto]

Re: Sharp Aquos

I have taken pictures of all the boards, nothing appears to be wrong with any of them from a visual point of view lol...(only the little thermal compound things that I have to put back.)

Here is the address so maybe you guys could take a look and maybe you might see something:

http://*************/f/814/024xb.jpg/

[tom66]

Re: Sharp Aquos

There looks to be two relays on the board - one bottom left and one top right - which one of these clicks?

Do you have a digital multimeter?

[lapisto]

Re: Sharp Aquos

Its the one on the top right (near where the power cable goes in), I have a digital multimeter... but its been a few years since I used it

I did everything I can do, without doing anymore damage then I have already done, I really don't have any other ideas. I put the boards and everything back on and at least nothing is worse off then before lol.

[tom66]

Re: Sharp Aquos

Are there any labels near the connector which goes from the power supply to the main board?

[lapisto]

Re: Sharp Aquos

there are two connectors on the power board, going to the main board.

1. PD CN5702

2. PH CN5701

[tom66]

Re: Sharp Aquos

But no labels indicating what the function of each pin is?

[selldoor]

Re: Sharp Aquos

Tom- not sure what you want to know - I have pieced together a block diagram
from the SM the leads go the Broadcom Tuner/Source.

[tom66]

Re: Sharp Aquos

Twice power and twice OPC indicates 3.3V power failure.

I would suggest checking all the LDO regulators on the board - if you need help with locating these post back with a picture of your main board (HDMI, tuner etc on it.)

[lapisto]

Re: Sharp Aquos

There are no labels. I put 6 pics in that link, I don't know if its working but you should be able to click onto the next picture.

http://*************/f/17/029ooe.jpg/

http://*************/f/411/028fcn.jpg/

http://*************/f/138/027boy.jpg/

(the only regulators I can ID are on the power board lol.)

[tom66]

Re: Sharp Aquos

Is there anything on the backside of the board?