"Mark D. Zacharias" wrote in message
...
Blow out the tuning capacitor with a compressor. Fairly common problem.
Naturally happens more towards the lower end of the scale, since this is
where the tuning capacitor's vanes are fully meshing.

Mark Z.

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"Colin B." wrote in message
...
Hey all;

Next on my agenda is to fix up an old but fantastic tuner I have here;
a Pioneer TX-9800.

Now I'm not looking at doing a full alignment--that can be left for the
professionals. However the major problem seems like it should be easily
fixable. Basically, the tuning jumps around terribly. If I'm tuned to
my favorite station (93.7, CKUA!), it'll be fine for a while and then
disappear entirely. To retune it, I have to go to 94.1; and the tuning
capacitor sounds (and looks on the meters) NOISY when I turn it.

Any pointers? Once I get it out of my rack, I'm going to look for crap
on the tuning cap, but beyond that, I'm not sure.

Thanks!
Colin

Interesting problem. I have a Heathkit AJ-1214 AM/FM stereo tuner and a
matching AA-1214 amplifier that I built in 1974 that still look and work
like new, in continuous 24x7 use. Played LOUD all through high school and
college. Too bad the Heath Company went out of business. They made some
great stuff.