Power Supply Help

I have been using a 12 v power supply to do testing on some of my MOPAR parts I make.

Today I got it out to stress test a pigtail.

To my surprise it was putting out 22 volts.

16 with a 3 amp load.

It is not a variable supply and it's max is 5 amps at 12v.

I suspect some of the components that set the voltage of the voltage regulator are bad.

I check the output for AC and nothing.

I have not opened it up yet.

Anyone have thoughts or what to look for?

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