Transformer Fault in a PSU?

Stefan Skoglund stefan.skoglund at
Sun Jan 12 22:34:05 CST 2020

sön 2020-01-12 klockan 21:10 +0000 skrev Rob Jarratt via cctalk:
> The PSU in my VAXmate failed recently and I think I have found a
> problem
> with one of the windings on the transformer not ringing when I test
> it with
> a ringing tester. The technical description of the VAXmate says that
> one
> winding is operated in flyback mode and I wonder if that has any
> bearing on
> the ringing test. Also, one of the pins appears not to be connected
> to
> anything else, so possibly a broken (melted?) wire.
> Can anyone help with the following questions:

The transformer is basically only intended to provide AC at a specific
voltage while preventing surges and noise from the utility to create
What voltage is it specified to provide ? If so, can it be replaced
with maybe a new AC to AC device ?

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