pas power supply question

I have stock pas3 which i was thinking of refreshing the power supply with the tube nirvana power supply board. My intent is to get it running safely in stock form for now.

I dont have any experience with preamps but i know i have had suprises with installing modern power caps in old amps in the past... arcing tubes and the addition of screen grid resistors come to mind.

I dont like suprises so is there anything i should be aware of here installing a new PS but leaving the rest of the original components in place for the time being?

Is this plug and play or is it alot more technical?

Thanks
Mike

If all you are after is safe operation consider replacing the Selenium stack with 1N4007 and replace the electrolytics with modern Panasonic or Nichicon. You should be good for another 30-40 years.

My favorite update to the PAS is the Dynakitparts RCA Jack Kit. When you re-wire replace the miserable stock input selector switch and replace the AWG22 bell wire with shielded cable grounded at the RCA jack end only

http://www.quadesl.com/pdf/pas_capboard.pdf

Is one option that I have used that eliminates the 12X4, and pretty much gets it all on one board. There are several iterations of this board available from several sources, so this is but one option.

If you are going to mess with the power-supply (generally a good thing if....), then do what you can to reduce the load on the transformer. There is nothing magic about a tube rectifier in the PAS in any case.

My revised P/S has been in place for just over one year now, and the pre-amp remains dead-silent as it should be. The OEM 12X4 is in the hands of another forum member - I have several, looking for another PAS in the future.