[ICOM] IC-706MKIIG Transmit Problem

[David J. Ring, Jr.]

Paul,

It sounds like a thermal intermittant, I'd suspect a cracked circuit board, 
and I'd check near the heat generating places (heat sinks, power amplifier 
area) - the good thing is that you're getting 12vdc to the unit when it 
turns off - so it isn't the power supply.

73

David N1EA

----- Original Message ----- 
From: "Paul S. Serio" <pss at tecinfo.com>
To: "ICOM Reflector" <icom at mailman.qth.net>
Sent: Thursday, July 27, 2006 1:32 AM
Subject: [ICOM] IC-706MKIIG Transmit Problem


Before I cracked the case on my 706MKIIG I thought I would query the
collective brain trust on the reflector as to whether anyone had run into
this problem before. The radio works fine for a period of time depending
on how much transmitting you are doing. Let's say I'm talking on 75 meters
SSB with just average length transmissions. Within 15 to 20 minutes the
transmitter power will abruptly drop to practically nothing. From full
power to nothing in  a blink of the eyes. If I let it sit for 10 minutes
or so it will work fine again. Sounds like something is overheating but
the fan is running normally and the unit gets no hotter than other 706s
I've had. They all tend to run a little warm. Anyone seen this one before?
Paul, N5PS


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