audio power supply not enough?
had the same thing with a audio section in a scanner. was a pass resister in
the dc power source. reisitor broke down under load, not supplying enough
current, started squeeling at high volume.



"Réjean Mathieu" wrote in message
...
Can anyone help. I am stuck with this problem
In receive, when I turn the volume, it starts to squeal at around 70% ???

I tested a dozen of lytics around the AF power amp. Found C118 had hi ESR.
Replaced it , it still squeals the same. Tried it with a 8 ohms dummy load
and scoped it., same it squeals.
???
Thanks