Re: HP 1955 Monitor Repair Guide

I'm sorry, but I guess my question wasn't clear. I know that the 3904 is the npn and the 3906 is the pnp, but I was looking for confirmation in circuit. I know that there is a pair (npn and pnp) is used for each FET. I also know the location on the board of each pair thanks to the picture that circles each pair. What I am not 100% sure on is which one, as shown in the picture, is the 3904 npn and which one is the 3906 pnp...
Thanks in advance.

Re: HP 1955 Monitor Repair Guide

Hi all,
I would just like to double check with someone on this forum regarding the signaling transistors (3904 and 3906) exactly which ones are the npn and pnp...I'm getting confused trying to measure in circuit as I have so many things blown. I've uploaded a copy of Krankshaft's picture (I hope that's okay) as a reference to the devices. I think the Q811 is the npn and the Q810 is the pnp (as pictured), but I can't figure out Q802 and Q803 (upper left side of the picture) as they are both damaged on my board....Can anyone help?
Thanks...

Re: HP 1955 Monitor Repair Guide

Hi all,
Does anyone know the part number for the zener protection diodes for the FET? Help is much appreciated...