Sounds like maybe the internal speakers are in the OFF
postion in the Menu,s.
Did you check the Menu,s ?



"Degull" wrote in message
...
The TV is a Sony KV-32TS35. The video works fine but there is no
audio. I tested the audio outputs at the rear of the TV with a pair
of computer speakers and they work fine. I have been using a
schematic for a Sony KV-27TS35. The audio and tuning sections in the
KV-27TS35 look identical to what I have in my KV-32TS35. After
following the audio path in the schematics it looks as though the
audio is split to two areas once it is processed in the SBX1637 sound
module. The SBX1637 feeds the audio outputs at the rear of the TV on
the A board and the main speaker amp on the B board. I'm assuming
that because I have audio at the audio output on the rear of the TV,
the audio output of the SBX1637 must be good. I checked the voltages
on the main amp which is a TDA2009A chip and they all match the values
on the schematic except the for the outputs of the chip which are 0
VDC (they should be 10.7). It looked as though the TDA2009A chip was
bad. So I managed to find the TDA2009A at local electronic supply
(the only one they had) and I replaced it. Damn it, still no audio?
The new chip tested the same as the original chip with all the
voltages matching the schematic except for the outputs which were
still 0 VDC. I'm wondering if I got a bad chip? It was the
electronic store's last TDA2009A.

I read somewhere that I should be able to test the inputs of the main
amp IC by using a pair of amplified computer speakers? This will
tell me if the audio signal is reaching the amp IC (TDA2009A). The
inputs of the amp IC read 1.4 VDC as shown in the schematic but I'm
not sure that means that audio is present.

I thought I had it licked with a new TDA2009A, but I guess not.