[Kenwood] TM-641 Transmit Issue.

Gary V. Smith gvsmith5 at frontier.com
Sun Dec 7 19:31:27 EST 2014


Hello Bob,

I'm sending this via the reflector because whenever I've sent you a 
message direct to your e-mail address it gets bounced.  It appears 
that you are getting the messages but I'm never quite sure.  I 
replied to your message in which you sent the service manual.  "Sorry 
for the delay in replying but we were out of town most of the 
day.  I've got a local fellow that's had a fair amount of experience 
with the 641/642/741/742 models and is going to walk me through some 
diagnostics.  I don't have much in the way of anything more than 
basic test equipment so I guess it'll be mostly touch and 
feel..hi..hi.  I'll keep you posted on what we find out but at this 
point I'm looking at the final as it appears that the driver is 
working.  It's odd though that when I key any other radio on a 
frequency that frequency shows up on my freq counter but when I key 
the 641, and although it transmits a signal that other radios pick 
up, nothing shows on the freq counter.  I'm not sure what that is 
telling me if anything."

Since I wrote that we've done the diagnostic and it appears that it 
is the final.  My advisor has had trouble with the final in one of 
his 742s over the years.  He's had to replace it three times in one 
rig.  So now I just have to muster up the courage to tackle the 
replacement procedure myself..hi..hi.  The service manual you sent me 
will be a great guide to what I have to do.  Many thanks.

I also want to thank the other fellows on the reflector who offered 
help with my problem.  Best wishes to all.

73,
Gary



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