any/all of the diodes in the sensing leg would be my first suspect... they
are the first line that gets attacked if the lightning comes down the
feedline.
On Mon, Aug 12, 2024 at 1:51 PM john simmons <jasimmons@pinewooddata.com>
wrote:
> Using a SWAG, and since the sensor isn't complex I'd look there first.
> Open it up and look carefully at everything under a strong light. If there
> is a PC board, examine both sides. Since it is off by a factor of ten,
> there may be a resistive voltage divider that has a resistor that has
> changed value, or a ground reference has been blown open. Another
> possibility is an open semiconductor. Good luck!
>
> 73
> -de "Curly" John NI0K
> QRZ.com<https://www.qrz.com/db/ni0k>
> Hamshack Hotline<https://hamshackhotline.com/> call me: 6100271
> On 8/12/2024 1:14 PM, Jim Brown wrote:
> On 8/12/2024 8:55 AM, Mike Smith VE9AA wrote:
> Recently I had some minor damage in the shack from a nearby lighting strike
> and my Power Master II is no longer functioning correctly. Jay is not
> responding (retired) and I understand that. He's sold me some great
> equipment over many years and has also helped me with tech support a couple
> times. Time for him to relax.
>
> Indeed it is. He ran a fine biz for years. >
> Mine is the smaller 2 sensor system for 6m/HF SO2R (3kW?)_.
>
> I looked at his system when it first came out, and quickly decided that it
> wasn't enough better than the cheap stuff that I had, and the N8LP system
> was far superior. I didn't have the money for it right away, but when one
> came up used when a member of our contest club went SK, I bought it. It had
> a single sensor, I added a second, and had Larry calibrate them. If you
> have difficulty repairing your unit, I'd jump on Larry's meter.
>
> 73, Jim K9YC
>
>
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