I concur with Jim; I had a similar issue with an R4C and it was the BFO
transistor that had went out. I replaced it with a standard 2N2222A.
The 7 and 4 line are different creatures, you might get lucky as Jim
outlined and just be able to reseat the boards and bring it back to life.
Good DX!
Mike W4DL EL96wf
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Date: Sun, 13 Sep 2015 00:01:11 +0000 (UTC)
From: "[email protected]" <[email protected]>
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Subject: Re: [Drakelist] Drakelist Digest, Vol 48, Issue 4
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thanks to the group,? for the replys, Jim NU0C moving the boards did the
trick,? thanks to all 73 Dana KC9WKP ps really made my day ! thx
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Sent: Saturday, September 12, 2015 11:00 AM
Subject: Drakelist Digest, Vol 48, Issue 4
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? 1. Re: Tr7. Audio (Jim Shorney)
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Message: 1
Date: Fri, 11 Sep 2015 18:21:28 -0500
From: "Jim Shorney" <[email protected]>
To: "Drske List" <[email protected]>
Subject: Re: [Drakelist] Tr7. Audio
Message-ID: <[email protected]>
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On Fri, 11 Sep 2015 09:55:25 -0500, DW. Anderson wrote:
Greetings to the group, thanks to you fixed last issue with the tr7, have new
issue , when I tune the radio in am, go to switch to CW, rtty, ssb lose audio ,
meter is showing signals coming in and in transmit showing power out, but to
audio, any thoughts ?
Sounds like you are losing the BFO. Since it affects both CW and SSB I would
suspect the signal path between pin 40 of the PBT/Ref board and pin 40 of the
2nd IF/Audio board. Probably one of those pesky Molex connectors. Often just
pulling the board up and re-seating will clear problems like this, but a little
dab of DeOxit on all the pins wouldn't hurt. Don't spray, it will go everywhere
that you don't want it.
73
-Jim
NU0C
--
?There?s something out of place ? let?s go and poke it with a stick.? ? The Doctor,
"Amy?s Choice"
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