SOYO (mt-prtpt3208nb) lcd tv garbled screen

[tom66]

Re: SOYO (mt-prtpt3208nb) lcd tv garbled screen

Thank you tom66, you were right, it was set on halftone. The menu is now crisp and on top, nice to see. The screen image is still rough (as seen in this new pic), it has large pixel like squares flickering all over the screen. Would it be a good idea to replace those larger Hermei caps on both boards?

It could be a good idea, but it's unlikely to be your problem.

So it looks to be the main board as the OSD is unaffected when set correctly. Some video processing is going wrong. Exactly what, well that remains to be determined.

At this point I would say replace the main board if you can source one, if not then a repair will have to be attempted.

[mandypo]

Re: SOYO (mt-prtpt3208nb) lcd tv garbled screen

Hi, I have a same problem with my 32¨ SOYO,I saved my TV for 2 years ,I bought a new board in USA and have the same proble, I check all voltages in power supply and the 5V is slightly high (in PCB marked 5V) 5.15v , I don´t have squematic or Service Manual, but I check all cap, at first sight all well, service manual or squematic are welcome , I have osciloscope, multimeter and counter , some help, maybe the new card have de same problem, maybe is the power supply I not sure right now , thanks