Re: What power supply to use?
require more info.
Was the power supply a fixed 12V 1A supply? If so then this is bad, you have to apply the correct current and therefore voltage to the items, it is usually in the range of 0.5Vdc to 1.5Vdc.
The parts should not fizz.
I suspect you have applied 12Vdc and cooked the supply as at 12V with even 1 screw it would draw more than 1A.
My advice. Get a variable power supply with output current protection, much like the caswell one.
Cheers Mark
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