[TenTec] Omni VI- PBT jumping after warm up.

[Gary Hoffman]

I have a Stirling cycle hot air engine.  Can you help with that ?

(I really do.....sorry for the OT post))

73 de Gary, AA2IZ


----- Original Message ----- 
From: <k8vf_mark at centurytel.net>
To: <tentec at contesting.com>
Sent: Tuesday, March 13, 2007 6:17 PM
Subject: [TenTec] Omni VI- PBT jumping after warm up.


> "Its thermal. Could be an almost soldered connection, a connector, or
> inside a chip or transistor.
>
> You need a freeze mist and some warm air (hot air gun or hair dryer).
> When it changes go cool a section. Then warm it, doing a binary chop
> (cutting the area heated and cooled each time) to isolate it. You may
> even get it down to the connection or device with the problem."
>
> Yes, I figure to look in the area of the D5 varactor, thinking that the
> voltage was being varied to it, causing it to shift.
>
> Any other ideas are MUCH appreciated. I am not well experienced in
> troubleshooting electronics but if you have a Steam operated pump or
engine,
> or a coal stoker I may be able to help.  ;-)   Mark
>
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