WTB: Internal Bias supply board from HP 4274A/4275A (Opt 001)

[pac1085]

Looking for an Option 001 internal BIAS supply board for my HP 4274A.  Maybe someone has some carcasses sitting around.  I believe the 4275A uses the same exact part.  Located in the USA.

May be looking for a 16023B Bias controller once I can locate the internal bias board, as well.

[Golds]

If you can provide a detailed number or specific location, maybe I can help you!

[pac1085]

It’s a removable card that slides into the back next to the gpib card with a connector that looks similar to, but smaller than the gpib one.  If it only has the gpib connector, then it doesn’t have the extra module. Actually, I’ve never pulled mine apart, so maybe the port on the back goes to a card inside, but regardless, check to see if it has the extra connector on the back.  If it doesn’t there’s a blank panel where it goes