[Elecraft] KPA100 ...again!
David A. Belsley
David A. Belsley" <[email protected]
Fri Oct 10 14:09:01 2003
The fan does not run all the time unless you have the menu set for it to do
so. So, Lou, check your menu setting (see the manual for the procedure).
There is clearly something amiss in the working of the high-voltage
circuitry. First, check that D13 and the other diodes are in correctly.
The .5 volt sounds almost like the thing is conducting to ground.
best wishes,
dave belsley, w1euy
--On Friday, October 10, 2003 11:49 AM -0500 Gregg Lengling
<[email protected]> wrote:
> First the fan does run all the time...the speed changes to high when the
> temp goes high. You'll have to trace out your Hi Voltage supply and
> make sure it's working. Look at the cathode of D1 if you don't have HV
> you've got a problem in the HV supply. If you do start tracing thru R11
> and 12 and RFC11 and RFC3
>
> Gregg R. Lengling, W9DHI, Retired
> Administrator http://www.milwaukeehdtv.org
> K2/100 S#3075
> Politics is the art of appearing candid and completely open, while
> concealing as much as possible. -States: The Bene Gesserit View
>
>
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of Lou Roux
> Sent: Friday, October 10, 2003 11:34 AM
> To: [email protected]
> Subject: [Elecraft] KPA100 ...again!
>
> Hi guys,
>
> Finishing up my KPA100 and ran into a snag. The manual on page 43 has
> the
> voltage checks. There should be 90 to 150 volts on the cathode of D13, I
> get
> .5 volts. Also the fan runs all the time on power up.
>
> Where have I gone wrong??
>
> Thanks,
>
> Lou - W6UR
>
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----------------------------------
David A. Belsley
Professor of Economics