On 2/10/2012 8:15 AM, tony wrote:
Hi,
I have a Pioneer sx-727. I'm the original owner over 40 years.
Recently developed fm problem.
Loud crackling sound on fm station and then station drifts. No noise
at all between stations.
AM reception also not good, background buzz, humm between
stations on AM only. Unit works perfectly with CD and other inputs.
Any ideas what my problem might be? This all started a couple of weeks
ago,
when I noticed that signal strength meter was not illuminated, I
assumed just bulb burned out.
Tuning center meter still works. Any help would be appreciated.
Thanks.

Tony,

Have a look at the soldering on the regulator transistors on the power
supply board, and elsewhere. While its been a while since I've seen one
of these, I remember soldering on the pass transistors getting really
awful. Look for overheated, crystallized looking connections. if you
find some, desolder and re-solder them.

Regards,
Tim Schwartz
Bristol Electronics