Secondary LCD Supply Voltage

[budm]

Re: Secondary LCD Supply Voltage

Is the LCD Controller just a stand alone board? And there are other main boards on this TV?
What is the status of the TV now, it is working?

[jkb242]

Re: Secondary LCD Supply Voltage

There are a total of 5 boards. The LCD controller board contains the microprocessor that interfaces the key inputs and communicates with the system board.

Video is solid and look normal, there is no sound at least when the input source is connected to the HDMI input. I am going to begin troubleshooting the no audio problem tomorrow by checking other input sources to see if all audio inputs are muted or if the problem is related to the speaker relay not pulling in. I have not checked the cable or off air tuner, but have no reason to believe the set only has the audio issue at this point.

Will post tomorrow my findings. Probably will begin a new thread entitled audio trouble.

[budm]

Re: Secondary LCD Supply Voltage

All this time I thought LCD controller is also part of the main logic board, now it make sense that you already replaced the main board and it still have the same symptom, sorry for not understanding all these time. Now it makes sense, great job locating the bad board. That sure a strange to have so many boards like that with a lot of cables to hook them all together.
Does it have the audio board by itself also?

[jkb242]

Re: Secondary LCD Supply Voltage-SEE New Thread--No Sound

Budm and all,

The initial problem has been fixed however a different problem has surfaced please see the new thread entitled Sharp LC-37D5U No Sound.

Thanks!!

[budm]

Re: Secondary LCD Supply Voltage

The SAGA continues but Iam sure you will solve it eventually and that is the fun part, I will need to download the service manual for this thing. By the way, if you use the Audio Line outputs Red and White RCA jacks, do you get the sound there?
I tell you one thing, this site is addictive!