After a closer / Second look, our PSUs look very similar, but perhaps the lettering on my board is reversed for the Ks…
And it’s making me wonder how I can have 0.0 volts on L while I have 4.2 on K-
I’ll go redo that test, perhaps we have a human error here…
Uggh…there are some vintages that have the K labels backward.
The question still remains how is the ground on L not getting to the controller but supposedly that same point connects to the test switch that works by connecting K+ to K-.
I am mobile so will look at it more when I get home.
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OK. Found the problem…
For some weird reason, my initial reading of my voltage on L was wrong. I have 4.2 volts there.
Then I realized that my Laser on/off switch and my test button were reversed (must have reversed the wires when redoing the soldering to replace my control panel).
So I now get fire when jumping G & L on the far right connector. Thanks for your time.
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Ks are reversed on my machine, but I think that ultimatly, what fixed my problem was that I had reversed the connectors P+/G with the K+/K- !
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Yep I agree … glad its fixed!
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