Literally: everything connected to the voltage input circuit, from line
connector to and including the transformer.
Most high voltage shorts start with corona which makes noise, but often
noise beyond our hearing range. Get an ultra-sonic leak detector which
changes ultra-frequency noise to audible noise. Use a short piece rubber or
plastic hose to keep equipment (and yourself) away from the high voltage.

Good luck,
Ahne.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Victor Hernandez
Sent: Wednesday, January 13, 2016 7:06 AM
To: [log in to unmask]
Subject: [TN] Post HiPot Testing, Power Supply leakage failure

Fellow TechNetters:

   What type of failure mechanism is associated with a HiPot Test Failure on
a 750W Switching Power supply?   The visual did not turn up any damage to
components exterior structure.   No damage to PWB laminate and solder mash
surface.

Victor,


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