[ICOM] Water damage to PW-1, now inop

[Adam Farson]

Tony, Larry,

The flashing band indicator LED denotes "Gain of the final FETs drops."
(User manual, p. 15.) This denotes a loss of power gain in the PA stage. The
cause could be a failure in the PSU, damage to the power splitter at the PA
input, or damage to all MOSFET power devices. Does the Vd scale (Meter 2)
still read approx. 50V?

Your PW-1 will need to go to the Bellevue WA service centre. I should think
your home-owner's insurance will cover the repair and shipping costs.

I am very sorry you have to endure this, and hope you get your PW-1 back
soon, working FB again.

Cheers for now, 73,
Adam VA7OJ/AB4OJ


-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On
Behalf Of Tony Visco
Sent: Sunday, April 22, 2007 16:33
To: 'ICOM Reflector'
Subject: RE: [ICOM] Water damage to PW-1, now inop

Larry,
It is likely that the individual FET's are now unbalanced or it could be a
power supply problem.  Adam would know the details.  For my PW-1 FET
problems meant a trip to Bellevue for repair about a year ago.  Still
working great. Good luck. 

Tony W3EW 

-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On
Behalf Of Larry Gauthier (K8UT)
Sent: Sunday, April 22, 2007 5:56 PM
To: ICOM Reflector
Subject: [ICOM] Water damage to PW-1, now inop

Due to a burst water pipe, water poured into my PW-1 while it was operating!

for a few brief moments (less than a minute) yesterday. I immediately
removed the cover, dried the components that had gotten wet, and blew a fan
into the amp for 8 hours to dry any remaining water.

Upon turning on the amp today, all visual indicators seem to be working
properly - all the normal indicator lamps work, bandswitching works, tuner
functions, ACC1 connection tracks the band that my 756 is switched to, and
the fan starts. Everything looks normal UNTIL I switch to transmit mode. 
Then the amp/protect lamps switches to red and the band LED begins blinking.

This failure occurs on every band, regardless whether the tuner is engaged,
and into a dummy load (perfect SWR).

Any suggestions as to where I should look? Or is it time to pack it into a
large box and ship it to Icom?

-larry
K8UT