Something that is pulling a supply into current limiting has to be nasty.
Pop the covers. There is a heavy read wire that feeds Dc to the final. Remove
that wire (may need to trace it back ) and apply power.
Sounds like a shorted driver/final
Mike wb8vge
Sent from my iPhone
On Jul 13, 2012, at 9:56 PM, Ben Hall <kd5byb@kd5byb.net> wrote:
> Hi Phil!
>
> Thanks for the reply. Warmed up the scope and the AC ripple on the
> power supply is less than 75mV peak to peak.
>
> I got out a 10amp, 13.8VDC supply and tried it. It seems like it tries
> to come on, all the LED's light, a relay clicks, then the power supply
> goes into current limit, everything shuts off. The power supply will
> recover, put out voltage again, all the LED's light etc., power supply
> goes into limiting and does it again and again... :(
>
> (I didn't let it do it more than three or four times before turning it off)
>
> So I'm thinking that power supply is okay and the trouble is indeed
> inside the radio. :(
>
> thanks much and 73,
> ben, kd5byb
>
>
>
> On 7/13/2012 7:59 PM, Phil Chambley, Sr. wrote:
>
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