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http://www.cbtricks.com/handyandy/PC-122/Reference.htm


here is a link to a lot of info for the radio you are working on, if you click on the links at the top of the page it has more info. the guy that wrote this up knows the radio better than most. the info has helped me with my pc122 and trc-453 radios in the past. these radios are bad about bad solder joints. you have to clean the old solder and flux from the suspect joints and resolder them. a few months ago I recapped my pc122 and realigned it and it works better than new. the caps could be getting old and drying out causing you a problem. I am talking about the electrolytic caps only.