[Kenwood] TS-820S VFO issue

[Paul Kraemer]

Brian
Seems to be a common problem with the 820.
When I got my first one it wouldn't operate above 350 which I suspect was 
top end of bands that were used most.
Operating the knob back and forth cured it for a while.
Ultimately I fixed it by cleaning the contact to the variable capacitor 
bearing in the vfo. Not to fear, there is a small access cover on the side 
of the vfo. Remove two screws and you are in. I worked contact cleaner 
around the bearing surfaces with a Q tip. Problem solved.
Paul K0UYA
----- Original Message ----- 
From: "Brian Harris" <cosmophone at yahoo.com>
To: "Kenwood" <kenwood at mailman.qth.net>
Sent: Saturday, March 27, 2010 5:36 PM
Subject: [Kenwood] TS-820S VFO issue


I am working on a newly acquired TS-820S that has been in storage for about 
15 years. While it works in a fashion (receives and transmits), the VFO is 
really erratic. In addition to jumping around in frequency and drifting a 
lot, when I tune the analog dial above about 310 the received noise stops 
and the display goes blank. I assume this is because the VFO has stopped 
oscillating. When I tune the analog dial below 310 or so, the VFO starts 
oscillating again and the display comes back one.

Before I tear into the VFO to clean everything, resolder any suspect solder 
joints and apply some Deoxit to all metal contact surfaces, I am curious if 
anyone on the list has experienced similar behavior.

Thanks in advance.

Brian Harris, WA5UEK

phone 214-763-5977

email cosmophone at yahoo.com

website www.myhamshack.com/wa5uek



When they call the roll in the Senate, the Senators do not know whether to 
answer "present" or "not guilty."  Theodore Roosevelt



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