On 3/24/2012 9:27 AM, Brenda Ann wrote:
I have a Sony CRF-5090 Earth Orbiter. The thing sounds fantastic,
and on the bands that work (FM/AIR/SW3,4,5) it's very VERY sensitive
and has better than average selectivity. The problem is, it doesn't
work on LW/MW/SW1. I've tracked it down to the oscillator being dead
on those bands. What I can't seem to track down is why. I've got the
service manual, and the schematic is no problem to read, but the
actual switches not so much. At least one of them seems not to
connect to anything at all. Has anyone ever had this sort of problem
with this radio and can help me figure out what's going on?

TIA




I have no experience with that set, but about 60 per cent. of the
time, a capacitor is at fault in older radios that have stopped
working. It shouldn't be difficult to replace every capacitor that
is only in the oscillator circuit on those bands. Another thing to
try is to check continuity of all visible band switch contacts, even
if you don't know how they're wired.


Best of luck,


Kevin, WB4AIO.
--
http://nationalvanguard.org/
http://kevinalfredstrom.com/