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#1
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R71A Dead Below 7998!
My R71A just died below 7998.0 - completely dead air! Above that freq is
just fine. Anyone know what might have caused this? I seem to remember once someone told me something about a 'paper' something that might go bad and have to be changed to ceramic. Can someone fill me in please? Is this expensive? Are there directions somewhere on the net? The problem seems to be intermittent - comes and goes, abnormal static, then it went dead. Any help/suggestions greatly appreciated! |
#2
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- I'd call Universal radio, C Crane or some shop of the ilk.. They are usually good with bits of information; or would know who might have a clue as to whats going on inside the set..... On the bright side, if its bad bad news, you can spend some time shopping for a replacement.. Something similar happened on a car radio I had.. I gave it a nice funeral & bought an electronically superior replacement.. |
#3
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"DX99" wrote in message news:zwaoe.424$xI2.58@trnddc09... My R71A just died below 7998.0 - completely dead air! Above that freq is just fine. Anyone know what might have caused this? I seem to remember once someone told me something about a 'paper' something that might go bad and have to be changed to ceramic. Can someone fill me in please? Is this expensive? Are there directions somewhere on the net? The problem seems to be intermittent - comes and goes, abnormal static, then it went dead. Any help/suggestions greatly appreciated! It shouldn't cost much if you find a competant repair person. It sounds like a bad conection in the RF deck. B.H. |
#4
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I vaguely remember reading about this problem. Try posting it on the
Yahoo R71a group. Or as others suggested call Universal Shortwave, or call Icom themselves. |
#5
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"DX99" wrote in news:zwaoe.424$xI2.58@trnddc09:
My R71A just died below 7998.0 - completely dead air! Above that freq is just fine. Anyone know what might have caused this? I seem to remember once someone told me something about a 'paper' something that might go bad and have to be changed to ceramic. Can someone fill me in please? Is this expensive? Are there directions somewhere on the net? The problem seems to be intermittent - comes and goes, abnormal static, then it went dead. Any help/suggestions greatly appreciated! This may help http://www.dobe.com/wts/funk/R71A.txt The first section on capacitors seems to point in your direction -- Panzer |
#6
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There's a good chance that one of the input bandpass filter switching
relays went out. I'm pretty sure they used relays instead of switching diodes in this radio because you could hear them click when you changed band ranges. Frank |
#7
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Ahh thanks for that link. Thats it - the trimmer capacitors - they are made
of some degradable paper material and should be replaced with ceramic. Called a radio place here in Tampa - its about a $65 repair (he estimates). Guy says he's reluctant to work on R71s but wouldn't elaborate other than to simply say they're 'older radios'. Says I can drop it off and pick it up in 3 days. I have a feeling it will be more than $65 when I get there. Thanks for the info "DX99" wrote in message news:zwaoe.424$xI2.58@trnddc09... My R71A just died below 7998.0 - completely dead air! Above that freq is just fine. Anyone know what might have caused this? I seem to remember once someone told me something about a 'paper' something that might go bad and have to be changed to ceramic. Can someone fill me in please? Is this expensive? Are there directions somewhere on the net? The problem seems to be intermittent - comes and goes, abnormal static, then it went dead. Any help/suggestions greatly appreciated! |
#8
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#9
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#10
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Solder problems seem to be the case in all the cheezy "yellow board",
single-sided consumer grade pc boards. I see it all the time in cheap power supplies. If the boards have plated thru holes the problem is almost non-existent. Frank |
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