Re: Defective Power supply in HP8711a Network Analyser.

Hi Caesar, nice to meet you again here, hope you are good.
The wheather here is still very cold, and the flu is just around the
corner. In Santa Rosa it should be better I guess, you are very lucky
to live in Californian climate.

Ivo is very worried about his 8711, so I suggested him to ask you
about it.

Ivo.
I'm not sure where I found out it, but somewhere (this is for sure),
there is a service note about the 8711 that explain some mods made to
the PSU, one was about a power resistor (about one watt, I guess)
added on the solder side near the backplane connector socket. Even if
i remember well, it was added to avoid the PSU lockup when the 8711
power switch was left on and the power was switched outside the
instrument.
Does your 8711 PSU have that resistor soldered on the solder side?

Massimo
.

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