HP HSTNS-PD43 PSU Hack & Feedback Circuit (Partial)

[dragospd]

Hi Stanislav,

Hi Zheka,

Connections:
- SIG1 - A9
- SIG2 - upper node of 05C resistor at B9
- SIG3 - D5 (MC3-1)

This is from my memory but I can double check it if anyone needs it.

I'm trying to use your schematic so I can modify my unit to 14.6V. Not very clear for me where SIG2 should be wired. I see in the original schematic that 05C is located in B12 and not B9 right? Can you please check?

Thanks, Dragos

[stanislav]

You're right, it's B12 not B9

here's how it looks on my psu



red - SIG1
white - SIG2
yellow - SIG3

There're multiple places to connect SIG2 but this one feels the most convenient as it's in the upper part and the wire doesn't interfere with other components.