[ICOM] PRO III and shut down

hamop k5yy at cox.net
Mon Jul 2 19:05:57 EDT 2012


Bruce, about that. Each time I monitored the power output and at NO time did 
it have a oscillatory "take off" and go way up in power higher that what I 
had it set for, about 90-100 watts. TU for thinking about that though. hi
San

-----Original Message----- 
From: Bruce
Sent: Monday, July 02, 2012 5:34 PM
To: 'ICOM Reflector'
Subject: Re: [ICOM] PRO III and shut down

There are other possibilities of what could be wrong..
The power supplies are shutting down when they experience an excessive
current demand so some caution is in
order or you may make things worse ie; burned pcb's.
The finals could be going or one of them..or even the TX predriver on the RF
unit and associated circuits around it
like bad diodes for switching RF causing  an oscillation and causing the
finals to put out way to much RF and tripping the
power supply over current protection..

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