"Rogerbird1" wrote in message ...
....

Hello,
I think I can help a bit.
I have a schematic available online at:
http://rogerbird.tripod.com/diagrams/
(its an unlinked page on my site - Shhh)
Ic 6 is the 8v regulator you are talking about.
One of the common causes of regulator problems in the HR series radios
is the fact that many of the Electrolytics are only 10v. These have been
known to cause issues on the 8V supply line and in the audio sections.
You may want to hit a couple with some freeze spray or just see if they
are getting hot.
Check C52 & C33 (47uf 10v) C60(470uf 10v).
In the audio Ckt C95 (470uf 10v) and C97 (47uf 10v).
I usually replace these with the same value just Higher voltage (16 to
25v) caps. There are others that can cause problems, but with your
issue I would start there.

Also I would check the Bias diodes on the driver and final. They could
cause the problem you are having. (d77 and D78 - MV1YHS).

I hope this helps,

Rogerbird

Hi Rogerbird.

Thanks for the help. I will definitely check those caps out this weekend. I
have downloaded the files you referred to. Thank you VERY much. I really
appreciate your taking the time.

Dr.X (glad there are Rogerbirds out there)