Colin Horsley wrote:
"David Brodbeck" wrote in message
t...
I have an Icom IC-28A I picked up cheap, with a warning that it only
worked on receive. Sure enough, the receiver works brilliantly but
there's almost no power output on transmit. (The needle on my power
meter moves, but almost imperceptibly; we're talking milliwatts here.)

The damage wasn't hard to spot. Q17 has overheated so badly the case is
charred and cracked. C54 is burned beyond recognition, with a matching
smoke spot on the inside of the top cover.
cut
_________________

Service manual is here if you need it:-
http://www.mods.dk/manual.php?brand=icom

Thanks, Colin. I did find that, and it's been very helpful. I also
realized the block diagram had transistor numbers in it, which tells me
that Q17 is part of the automatic power control circuit, which would
explain the lack of power output.

I may just go ahead and change C54 and Q17 and see what happens.