[ICOM] IC 706mk2G Drop out

[Stephen Budensiek]

Hello,
   The 706MK2 is very sensitive to voltage.   It wants 12.0 volts or
more!   11.9 will cause drop-out and other failures.   Check all your
connections, you may even have to drop a cover on the 706, and monitor
voltage under load.   You'll need a DVM.   Connections get old, start
getting voltage drop downs.   Suspect any junction of any kind, even
into the radio, the plug on the back of the radio, and disconnect
plugs you may have in the line.   I've fought the problem a couple
times, once in a mobile situation.   I was using the car frame for
ground, it was going bad and causing voltage drop outs, causing the
radio to shut down while I drove down the road.   Gave me fits for a
little while till I ran a ground wire directly to the car battery
negative terminal.   It was really strange.

73's de Stephen

***************************************************

On Thu, Jul 29, 2010 at 3:39 PM, Wayne Johnson <vk6eh at westnet.com.au> wrote:
> Hi All, I have an IC 706mk11 G that intermittently drops out (For want
> of a better description). When it happens I can hear the small internal
> relay associated with the DC switching 'tripping' in and out quite rapidly.
> It has happened on both 40 & 80m to my knowledge and I also have tried 2
> other power supplies.
> Turning the power off/on will sometimes restore normal operation while
> at other times you can only hear the relay tripping on and off. Usually
> leaving the radio switched off for about an hour or so will bring it
> back to normal operation but it will do break down again.
>
> On the few occasions I have witnessed this problem it has happened while
> the radio is receiving.
> Has anybody seen this problem before or can offer a cause/cure?
>
> Cheers
> Wayne
> VK6EH
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