[sdiy] Damned amplifier

[Linium]

Hello,

I have 2 stereo amplifiers that show almost the same faulty behaviors and i 
would like to ask about this kind of problem.

The amplifier work ok but there are some moments where a voice start to have 
some very short loss in the signal, like there is a bad contact somewhere.

I have checked the connectors, the pots, and the boards, but it seems that 
the problem is not coming from a mechanical defection. (and of course not 
from the soundcard or the cable).

Do you now if there are some componants more than others likely to fail that 
way ? works ok most of the time but then it will act like there is a bad 
contact ?

I would be very very happy to learn more about this.

Linium