Sony APS-211 42V power supply

[Little-Sparky]

I'm trying to increase output voltage on this apparatus/device. I would like to increase it to 53.5 volts so I can run a 4pill LD mosfet amp by DXworld. Any advice, looking for a Variable resistor to adjust like on most little power supplies. or is it more complicated like removing a resistor with a lower ohm rating? Any ideas. GaryLordsWay@aol.com thanks Gary.

[DavidAlfa]

Tweaking the feedback circuitry will probably do that, but we can't magically guess how!
How about some pictures?

[Little-Sparky]

I think I have it figured out I have tow options and one is to trick the IC return signal and make it think it is low and have it increase out put voltage by trickery or use a DC/DC buck converter circuit to get my voltage up to where I need it to run my device I am building to run on the power supply. But I do have a way to get what I need done figured out.

[tom66]

Increasing the output voltage will be more practical than building a boost converter, assuming you need the 1500 - 3000W or so that this power supply is capable of providing (highest power output available if the input voltage is >200Vac).

[NiHaoMike]

Can also consider adding a 12V server PSU in series with the output, will probably work better than trying to change the output voltage by a fairly large amount.

[tom66]

Can also consider adding a 12V server PSU in series with the output, will probably work better than trying to change the output voltage by a fairly large amount.

Almost certainly a power supply of the scale required would be earthed at the negative DC output, so you would need to defeat the mains earthing of one power supply or the other, which is a bad idea for lots of reasons.