Doing a reset at this point will do nothing because the CPU is not getting any
power if K1 is not pulling in.
Gary
W0DVN
> On Jan 18, 2020, at 9:50 PM, Bernie Skoch via TenTec <tentec@contesting.com>
> wrote:
>
> I've confirmed that 12vdc is making it past the molex connector and onto the
> pins of the circuit board. I've removed the power protection diode from the
> circuit with no change.
> Master reset goes nowhere.
> I'm flummoxed.
>
> -----Original Message-----
> From: Bob McGraw K4TAX <rmcgraw@blomand.net>
> To: tentec <tentec@contesting.com>
> Sent: Sat, Jan 18, 2020 9:37 pm
> Subject: Re: [TenTec] Orion II Won't Power Up
>
> Recheck all power connections from the power supply to the radio. The
> white Molex connector for DC power on the radio is known to be
> problematic. Make sure all is tight there.
>
> If the transient diode has failed it may short to ground which should
> blow the fuse or over current the power supply. If the diode is open,
> it won't make any difference. Except you won't have transit protection
> on the DC line.
>
> Try a Master Reset from a Power Off condition.
>
> 73
>
> Bob, K4TAX
>
>
> On 1/18/2020 9:14 PM, Bernie Skoch via TenTec wrote:
>> In the middle of transmitting today, my O2 went stone cold dead. We had
>> high winds that may have briefly shorted the antenna.
>> DC power into radio is good. Fuse good.
>> There is a component labeled 5KP15A that appears to be a transient voltage
>> suppression diode near the 12VDC input.
>> Any clues of whether that might be what blew?
>> Thanks.
>> _______________________________________________
>> TenTec mailing list
>> TenTec@contesting.com
>> http://lists.contesting.com/mailman/listinfo/tentec
>
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