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Panasonic RF2800/No AM/SW

 
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pops 14
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PostPosted: Tue Mar 15, 2011 5:26 pm    Post subject: Panasonic RF2800/No AM/SW Reply with quote

No AM/SW.Signal Strength Meter at 3/4 Deflection,no static,air noise.no nothing, FM works great! Thought it might be in the selector switch,was in a Panasonic table radio from the 60's. A little spritz of contact cleaner did the job..Got any ideas? I'm stumped,not a clue what could be wrong.
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torbjorn



Joined: 07 Jun 2007
Posts: 370
Location: Sweden

PostPosted: Wed Mar 16, 2011 12:17 pm    Post subject: Reply with quote

First, check if you get supply voltage to the AM IF and RF stages.
Check if the frequency display is counting correctly, in that case you know that at least the first local oscillator is working.
Is it completely silent also at SSB mode? If the radio has a RF gain control, does the S-meter reading change when adjusting that?
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murfy888



Joined: 31 Jan 2011
Posts: 5

PostPosted: Wed Mar 30, 2011 9:34 am    Post subject: Check switches Reply with quote

I got mine radio fix buy replacing selector switch. Same problem AM/SW all so silent. Can't hear any scratch. But when selector switch was replaced with new one it work.

In some other cases also you need to check IF transformers. Better replace them also if replacing selector switch don't work.

I hope this helps
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