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Discussion in 'Ham Equipment' started by siltronix_man, Feb 24, 2012.
is it deaf too?
they dont get much recieve if the lamp goes.
cycle the band switch. they sometimes need the contacts cleaned
No, the METER driver - the tube that operates the AGC, which is what the S meter operates from. You'll probably need the manual or a schematic.
Everything else is solid state.
Yes you need a Service Manual.
You can download a copy here, complements of the Fox Tango Group
You need Adobe to open it, and it is a big download if you are on dial-up.
Looking at the service Manual,
: PB1183B is the low frequency IF unit.
This has the low frequency IF amp, crystal filter(s), detector and AGC/S meter circuitry.
My first thing to suspect is dry electrolytic caps, these are 40 year old radios, and caps simply do not have a service life that long.
Look for bulging/leaking caps to start.
I loved my 101`s when I had them, and made many many contacts with them.
Just like many radios these are suffering from old components, and first on the list for me is caps that dry out.
What was great about the 101`s was that if you had 2 radio`s and one quit board substitution will allow you to quickly swap a board and get it down real fast to were the problem is.
There is a guy on Ebay that used to sell a complete cap set for all of the 101`s to re-cap the whole radio, a very good idea for a radio that is 40+ years old.