Thomson TTT-00-001
CTC-195/197/203
No Audio in tuner modes, Line inputs may work ok
195/197 Check # 49 of U16201 should be apx 3.9 VDC, 203 # 49 of U12101.
Not functioning voltage aproaches 7 VDC
195/197 check C12304, 203 C12309 for open, # 3 of L12303 near # 1 of
U16201 / U12101 in 203 chassis
Also CR12301 # 1 of L12303 All in FM detector ckt.
BTW no antennea or cable to the set audio noise may be present, once
antennea or cable connected, may mute or go to a very low level.
"David" wrote in message
om...
Do these have the early versions of the Gemstar 4 module? If so
certain codes certain tv stations send out turns off the audio, tv has
to be unplugged to fix. There has been a class action lawsuit against
Thomson over this one.

That chassis also will turn off the audio outputs if it sees any kind
of dc detect on the speaker line. Make sure it is not borderline.

Plus the myriad of problems on the clock and data can cause this
symptom. Especially conductive glue under certain surface mount
components on the clock and data lines.

This type of problem almost guarantees the need for a 4 channel or
more digital storage oscilloscope. Thomson's ctc195 and later
chassis' was the reason we had to upgrade our equipment.

David

Andy Cuffe wrote in message
. ..
On Thu, 18 Nov 2004 02:26:22 GMT, (Jason D.) wrote:



This is true, also make sure the mute circuit isn't prematurely muting
audio.

Cheers,

Wizard

How do I determine if this is the problem? I have yet to see either
set act up.
Andy Cuffe