Thomson 32ha3203 - Crackling static then no Sound

DrunkenNinja

Honorable
Sep 3, 2012
4
0
10,510
0
I like tinkering and fixing things but this one has me stumped, I am pretty good with a soldering iron and can lift and replace chips if necessary as I have a heat wand.

Yesterday suddenly this TV had no sound, I opened the boy up and traced the speaker wired to a connector with 4 wires, initially I figured this was the issue so took the board out and refreshed the solder on the connections to the PCB, ran an open test and all seemed well with the TV running for 10-15 minutes un-interrupted, I put the wires back into their clips ann secured the PCB with the 2 screws needed, I then ran another test with the TV still open.

This time after around 5 minutes the TV started to make a crackling sound with intermittent loss of sound, eventually the sound just went completely, strangely when hitting the power button to put the TV in standby the sound came back for that single moment just before it switched off, turning the tv on again (while the board is hot) just reverts back to the crackling then loss of sound completely. If I let the TV (cool down) I can them probably get another 5-10 minutes perfect sound out of it. Now I am wondering it there is possibly a short in the wires when the tv gets ward,

I'm not one for buying a new tv when I can repair it myself, but I definitely need some guidance on this one, I'm used to messing with games consoles and pc's so an HD tv is something different for me and an interesting challenge.

Keep up the good work you guys do, any responses are greatly appreciated.
 

DrunkenNinja

Honorable
Sep 3, 2012
4
0
10,510
0


Thanks so much for the reply.

Here is an image of the PCB: https://gyazo.com/b3ed121c2dde767339d3eec37397369d

I can buy a used one for 30 Euro but wanted to check first it was the main board,pretty sure it is but I wanted some re-assurance, maybe even tell me where on the board the issue might be.

 

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