Radio Symptom and Cure Database
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TRC 474 ,TRC 421A
Low modulation , Distorted Audio, TX RX.
The TRC 474 does not have capacitors numbers marked on the board. The trouble maker is a 16 volt 33 uf electrolitic cap located in the circut between pins 1 and 3 of the MB 3712 Audio IC. On a TRC 421A it's C63
IF possible use higher voltage cap for replacement.