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
On 9/13/2015 12:00 PM, drakelist-requ...@zerobeat.net wrote:
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Message: 1
Date: Sun, 13 Sep 2015 00:01:11 +0000 (UTC)
From: "captainpap...@att.net" <kc9...@att.net>
To: "drakelist@zerobeat.net" <drakelist@zerobeat.net>
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
From: "drakelist-requ...@zerobeat.net" <drakelist-requ...@zerobeat.net>
To:
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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" <jshor...@inebraska.com>
To: "Drske List" <drakelist@zerobeat.net>
Subject: Re: [Drakelist] Tr7. Audio
Message-ID: <20150911232135.874d4280...@mail02.inebraska.com>
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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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