LN32B360 no sound over HDMI + erratic buttons

[paulstef]

Does anyone has a schematic for the mainboard BN41-01181A?

This TV works but has no sound over HDMI. The PC sound input works though. Can't test the other audio inputs, I don't have an AV video source.

Also the buttons on the side , especially volume up , down and menu, source do not always do what they are supposed to do but I don't know if this is linked to the other problem , maybe not. They use a resistive ladder it seems to determine which button was pressed. The voltages aren't always stable when the button is pressed, maybe just corroded contacts inside the buttons, gonna clean them with contact spray or replace them.

I have clean 5V coming from the power supply board, no excessive ripple... I really think I need a schematic for this board for the sound problem.
It's BN41-01181A, BN96-11408, bn97-03889.

Thanks!

[budm]

Re: LN32B360 no sound over HDMI + erratic buttons

Did you check to user menu setup of the source and the TV to see if the HDMI sound is set for digital audio through HDMI or through the Analog.
https://us.en.kb.sony.com/app/answer...dmi-connection.

[paulstef]

Re: LN32B360 no sound over HDMI + erratic buttons

Did you check to user menu setup of the source and the TV to see if the HDMI sound is set for digital audio through HDMI or through the Analog.
https://us.en.kb.sony.com/app/answer...dmi-connection.

The source is a playstation and the audio on the the PS is set to go through HDMI.
The TV wasn't used for a few months (which could explain the button weirdness) , but I don't see how this would affect the TVs HDMI sound.

Are you saying there might also be an adjustment in the service menu of the TV for that?

[budm]

Re: LN32B360 no sound over HDMI + erratic buttons

So both HDMI's have no sound?
Did it work before? How about using this PS on other TV to make sure it is not the source problem?

[paulstef]

Re: LN32B360 no sound over HDMI + erratic buttons

One HDMI doesn't have sound, the other one doesn't work at all, I'm gonna try a shorter cable in the evening, had problems with this before... However, the HDMI that works has a perfect picture. And yes the PS works on another TV...

Sound on PC IN works and also the Samsung TV sound when turning on and off the TV works... Just HDMI is not routed through. I can't say anything about Audio AV IN and tuner, I don't have an antenna.

I'll be back with news later.

thanks

[paulstef]

Re: LN32B360 no sound over HDMI + erratic buttons

Did a factory reset and sound came back on HDMI.

Miracle?

[budm]

Re: LN32B360 no sound over HDMI + erratic buttons

Well, you are lucky then.
Did you have a chance to see what the ON SCREEN setup for the HDMI's were set to before you did the reset?

[paulstef]

Re: LN32B360 no sound over HDMI + erratic buttons

Well, you are lucky then.
Did you have a chance to see what the ON SCREEN setup for the HDMI's were set to before you did the reset?

Not really, as I didn't quite understand the meaning of all the parameters available. This was more like a trial and error approach.

Thanks