Thanks Raj
best 73
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-----Original Message-----
From:
[email protected] [mailto:
[email protected]] On Behalf Of Raj vu2zap
Sent: Friday, March 22, 2019 12:24 PM
To: Bitx
Subject: [BITX20] Deaf and Dumb uBitxV4
Received another board from vu2pop last night. S.No 007/2 from Farhan.
Nothing much heard from the receiver and with a strong signal from the
generator some distorted audio.
Transmit was as bad, about 100mW.
TX RX both poor so it has to be something in the common circuit.
To cut the story short, I checked and compared the levels at all the RF RX
points with a good board.
Everything was fine at all test points except TP20 which is audio.
Whn I put the probe on D5 there was some change.. pressed one contact and
the volume almost blew my ears.. guess what - a bad solder. resoldered it
and all is well with #7/2!
Mostly the issues are simple but takes a lot of patience to find and fix.
Cheers
--
Raj, vu2zap
Bengaluru, South India.
