One possibility is supply voltage spikes. Some embedded
microcontroller chips will freeze if the supply voltage goes outside
the spec even for a brief moment. I had that happen recently. The
spike was so brief that it did not register on the voltmeter.
Connecting a large capacitor across the power wires solved that
problem. You might want to give that a try.
On Thu, Apr 10, 2014 at 2:59 PM, Richard Wheelwright
<rpwheelwright@yahoo.co.uk> wrote:
>
> Rolland,
> It locks up as in I can't change stations some times or alter the volume.
but trying to transmit it shows TX as a normal transmission but ATC can not
here me. If I turn the radio off and back on again all is well until it does it
again. Their is no set time when it locks.. and I can not get it to do it
with-out
the engine running. Some times it is OK and others not.... I have wiggled
every wire I can find.. But nothing is standing out to say this is where the
fault is..
>
> "Richard, I seem to recall a similar problem when G-OGAN was being checked out
prior to first flight.
> The problem was the jack plug sockets in the roof microphone and speaker jacks
just touched causing a short,so make sure that there is enough space between
the sockets.
> Best regards
> Andy Cullum. "
>
> Andy, I have checked the mic and head set sockets and all seem well. This is
a strange one !!! As nothing stands out to be the problem!!!!!!
>
> --------
> Richard Wheelwright
> G-IRPW
> First Flight 24th July 2013
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=421884#421884
>
>
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