Posts: 33
Threads: 8
Joined: Jan 2011
Just recapped a pilotuner T-601 FM I picked up at a flea market. Cannot aline. All the stations seem to jammed into the lower part of the dial. Upper part of the dial is dead. I receive only 96 - 108 MC and they appear on lower part of the dial. Seems trimmer cap T7 is open. here is the schematic:
http://www.nostalgiaair.org/PagesByModel...014587.pdf
but I can't find a parts list for value of T7.
If someone knows where to get this info I would be greatly appreciative.
Thanks
Posts: 7,323
Threads: 270
Joined: Dec 2009
City: Roslyn Pa
Because of the frequency involved it's going to be pretty small something like 10mmfd. If the osc coil is air wound you can try pulling the turns apart a bit or pinching it together to raise or low the inductance.
Terry
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got it!
Terry
Posts: 33
Threads: 8
Joined: Jan 2011
Yes completely removing the slug and squeezing the coils together helped but not enough. Thanks for the info. Found a 5- 20 PF cap gonna try that when it arrives.
Thanks all!
Posts: 5,650
Threads: 56
Joined: Sep 2008
City: Sandwick, BC, CA
Did you check the resistors in the circuit and the fixed micas as well? Recapping a set fixes a lot of problems but paper caps aren't the only part that fails. It's rare to have a problem with a trimmer cap unless someone physically mangled the thing. They probably don't list a value for the trimmer for that reason, they just don't go bad on their own.
Regards
Arran
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