The failed cap has an ESR of 56.32k and slowly dropping.? The capacitance is 48.78nF and rising.? This was measured with an Agilent 1733C.? I have an HP bench unit down in the lab so I'll walk down later but generally it agrees with this little handheld I wonder why I still have it.
The Mallorys were worth trying for the price.? I did find brand new Mallorys later today for $12.? But with ebay, you never really know what you get when they have more than one.
The weird thing is the way this thing failed. I never thought about switching an LM317K regulator on and off like that by pulsing the ref pin.? ?So the -10v supply is used to set the reference for the 12V supply and because this cap was bad, the -10V was pulsing up and down at 12Hz switching the 12v off and on.??
