[Kenwood] TS-850SAT Woes

[Clif Holland]

The strange and stinky smell is burning electrolytic capacitor juice.

C1 on the Car unit has leaked and is shorting the TXB line. If you keep 
keying it you will damage the Tx/Rx board in the IF unit.

Clif Holland KA5IPF
www.avvid.com




----- Original Message ----- 
From: "Chris Kepus" <ckepus at comcast.net>
To: <kenwood at mailman.qth.net>
Sent: Saturday, January 17, 2009 3:20 AM
Subject: [Kenwood] TS-850SAT Woes


>I fired up my 850 tonight only to be greeted with some strange behaviors 
>and
> odors.  Last used on CW on SKN, it performed perfectly.  Anyway, tonight 
> was
> waaaay different.  I tried to get going on SSB but noticed that the rig 
> was
> not making normal power (as shown on my power meter) and more perplexing,
> showed a rapid drop off in power on key down for several seconds.  After a
> couple of futile attempts to remedy this problem by "restarting" the rig 
> by
> setting up essentially from scratch, I gave up and headed for Google and
> QTH.net.  Plus there was a faint odor of smoking electronics that wasn't
> present prior to turning the 850 on.
>
>
>
> In this list's January archives, I read through the messages in a thread
> about a very similar sounding problem in a TS-430S.  In one of the
> referenced links in this thread, the link began, "Intermittent Drop in 
> Power
> Output, Erratic ALC behaviour, SSB distortion:  Unless your TS430 has been
> in a store room since it was manufactured, you have an appointment with 
> the
> vias (PCB through-hole connections) and soldered joints around the PA 
> final
> transistors."
>
>
>
> Does anyone know if the 850S final boards are susceptible to this same
> problem?  The symptoms of a drop in power and erratic ALC behavior were
> present (didn't monitor for SSB distortion as I shut it down).
>
>
>
> Any and all comments will be appreciated.  I subscribe using the Digest
> method of "reading the mail" which means I may not respond as quickly as 
> you
> might expect unless you reply directly to me.  I do respond to all 
> replies.
>
>
>
> Thanks es 73,
>
> Chris
>
> W7JPG
>
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