[Kenwood] TS-430S USB/LSB receive stopped working

[Dan Violette]

I had a TS-440 so may have some of this testing incorrect for the -430 but:

In CW switch to the SSB filter and check.  Should be able to quickly see if
the issue is filter related.  Or maybe switch to SSB on the CW station if
you can't manually select a filter.  Maybe that is what you did.  You sound
like you are on the right track.

Dan, KI6X

-----Original Message-----
From: kenwood-bounces at mailman.qth.net
[mailto:kenwood-bounces at mailman.qth.net] On Behalf Of Ian Wilson
Sent: Friday, June 15, 2012 11:42 AM
To: kenwood at mailman.qth.net
Subject: [Kenwood] TS-430S USB/LSB receive stopped working

I have had a TS-430S for some time. It is used almost 100% on CW.
Recently I discovered that receive on USB/LSB is 9 S-units down from the
sensitivity on CW. This must have happened some time since last Field Day.

I am aware of the fix for poor relay contacts. However, I don't see any
relays in the schematic that would seem to be related to SSB selection.

The next step would be to measure the control voltage on the PIN diodes that
do the filter selection, I suppose.

Anyone encountered this problem before?

73, ian K3IMW
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