reario wrote:
I'm trrying to repair an old Sony 21" BE-1 TVC that presents no audio
at all.
I replaced the IC TDA1013A with a new TDA1013B with the following
results: audio now is ok but when TV is off for a long period (several
hours) it comes out after severals seconds .
The second stage of the IC TDA1013A|B (an AF ampli that drives 8ohm
speaker) works fine because if I inject the signal on pin 5 sound is
ok (the problem is that in this way I bypass the pre-ampli stage that
has VAC for volume control).
Is There something I can do in order to get IC 1013B compatible with IC
1013A? I'm not able to retreive the TDA1013A in the marketing...
Thanks,
There is no electrical difference between them. Check pin7 voltage, 2V
= low, 6V = high vol