-
Expert
75 Answers
- Posted on Mar 12, 2010
Re: roberts radio R25 no medium wave
U have a bad MW tuner section. this is a transistor radio probably using MW oscillator coils and IF transformers. I suspect the IF transformer or related components cause misalignment hence no audio output from the radio. just noise.
I would replace all the electrolytic capacitors, almost all vintage radios needs this done. I would sit your radio next to another AM(MW) radio, with both on, tune either radio up and down the dial..and see if you hear squealing or distortion in the either radio..if so..that means the oscillation coil and the transforms for this circuit is probably ok..
×