On 9/22/20 9:22 AM, Tom Kupp wrote:

No joy, just says POWER.

Look inside and and follow the power from the connector.
First, the center pin should go to the supply bits, not to ground.
That shows the center pin is + or -.

Then see what they're using for a regulator. The input will have
to be more than that.

Does it have a bridge rectifier? If so the supply was probably AC,
but you can use a DC supply with it.

Lastly, first try a +5 v supply, if that doesn't work, then try a
+12 v supply.


--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com