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Old 05-29-2018, 12:33 PM   #17
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Join Date: Nov 2012
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Default Re: Repair Fence Energizer SS-1000E Fi-Shock

I was guessing C2 as bad as if it were leaky it could also never trigger...but that would somewhat be a wild guess.

It is worth to test if the SCR is still good. If you have a 12V PSU, a small 12V light bulb (NOT SMPS LED), and a 1K resistor you could do a simple test:

Connect PSU+ -> anode of SCR
cathode of SCR -> Light bulb contact 1
Light bulb contact 2 -> PSU-

Light bulb should remain OFF.

Then touch the gate of the SCR through the 1K resistor to PSU+ momentarily.

Light bulb should turn on and stay on.

If this is the case, the SCR is probably good.
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