[ICOM] IC 735 Problems

[John L Merrill]

Nate:

I think this is the problem.

 Knowledge Base Article 5AWC496A41

Issue
My 735 has distorted RX/TX, or no RX/TX on one or more bands. Distorted SSB
audio sounds raspy and rough. The problem may be temperature related.

Resolution
There is a bad trimmer capacitors on PL unit, HPL VCO section. Replace the
plastic trimmer capacitors C37, C45, C52, and C59 with ceramic equivalents.
Also replace the reference oscillator trimmer capacitor C138.




John N1JM



> From: Nathan Moreschi <n4ydu at nc.rr.com>
> Reply-To: ICOM Reflector <icom at mailman.qth.net>
> Date: Mon, 26 Nov 2007 19:19:46 -0000
> To: ICOM Reflector <icom at mailman.qth.net>
> Subject: [ICOM] IC 735 Problems
> 
> I have an IC 735 that appears to be a little sick. I've noticed that cw
> signals seem to sound raspy and that the overall rx sensitivity is low. The
> raspy CW goes away after the rig has been on for a few hours.
> 
> Could this be related to the trimmer caps?
> 
> Any ideas?
> 
> 73,
> 
> Nate/N4YDU
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