[1000mp] Sudden FP-29 failure

[Mort Arditti]

Hi,
I am not familiar with FP-29. If we assume that it is similar to
the internal power supply
in the FT 1000 MP (??), the most expensive part is probably the
transformer. It may be
worth looking at the schematic for details.  The failure may have
damaged or destroyed the
printed circuit board as well. However, frequently this can be
patched unless the board turned
char coal.
It may the same as going to a car dealer to replace the spark
plugs. They charge  a whole
bunch more than the part cost at any auto parts store.
My guess (!!!) is that the failure is semiconductor related.

Good luck.

73,

Mort,  KB6BSN
----- Original Message ----- 
From: "Pete Smith" <n4zr@contesting.com>
To: <1000mp@mailman.qth.net>
Sent: Wednesday, December 17, 2003 9:38 AM
Subject: [1000mp] Sudden FP-29 failure


> The FP-29 that powers my Mark 5 spontaneously destroyed itself
last week
> while powering the radio in receive, and Yaesu says it is way
beyond
> economical repair.  Their tech doesn't think the radio killed
it, it was on
> a good surge protector, and there was no lightning in the area,
so he says
> "random component failure."
>
> I know nothing about switching power supplies, but wonder what
single-point
> component failure could cause $421 in parts and 2 hours of
technician time
> to repair.  The PS was hot as a flat iron and the pilot light
was out, but
> neither fuse had blown.  Very odd.  Anyone else had a similar
experience?
>
> 73, Pete N4ZR
> Happy Holidays
> Check out the World HF Contest Station Database at
>   www.pvrc.org/wcsd/wcsdsearch.htm
>
>
>
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