[ICOM] Need Help w/PW-1 Problem

[js]

Is there any problem with power supply unit of PW-1?  One of the ham in Hong
Kong has a faulty psu and get the amp/protect always on.

73

Johnny Siu VR2XMC
----- Original Message -----
From: "Anthony R Gargano N2SS" <n2ss at n2ss.com>
To: <icom at mailman.qth.net>
Sent: Sunday, July 04, 2004 10:58 AM
Subject: [ICOM] Need Help w/PW-1 Problem


> I have an early serial number, 1138, PW-1. The amp has worked fine up
until
> now. This evening I started to get an "Amp/Protect" fault on every band -
> 160 thru 6 meters. I have connected the amp to a dummy load, done a CPU
> reset and a reinitialization - all to no avail.
>
> I drive the amp with a 756 PROII and have been using this particular
> combination for several years. If I reduce the drive to minimum (RF Power
> control fully CCW), the amp keys and does not fault but as soon as I begin
> to increase the drive, it kicks out and the Amp Protect led turns from
> green to red. The 45V HV line to the PA stages is fine. I would really
> appreciate any thoughts or suggestions. Thanks, Tony N2SS
>
>
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