If the sound cuts back on like this as volume is turned up, I would suspect
a bad solder connection, or other connection.

Mark Z.

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"Tim Kettring" wrote in message
...
"TerryG" wrote in message
. com...
Hi,

A friend of mine has a sony car amp that is acting strange. The right
channel will only work when the volume is turned up nearly all the way.
Does anyone know what could be causing this? I switched the left and
right inputs around to make sure it wasn't the head unit or cable, and
it didn't seem to make a difference.

Thanks
Terry

Its hard to tell for sure , but I would suspect a leaky capacitor in the
bad
channel . Also , check the power resistors in the emitter leggs of the
output transistors or IC . I had a burnout that I had forgotten to hook up
one legg of the emitter resistor , and the amp did the same thing as what
you describe .