HP 3325A Function Generator crapped out

Power supply would be my first guess. It's been years since I worked on one. Does that generator use Mostek ROMS?

It is made by hewlett Packard,, who are only half way good at making scanners. Computers""?? FORget it. Switch brands. Ifyou're a loyal nut, god help you.

MS

"The wise speak only of what they know, Grima son of Galmod." ;)

HP used to be an instruments company, and built some of the most beautiful, accurate, bulletproof instruments ever seen. I have probably two dozen of them, including two 3325As, both of which need some relays replaced but are otherwise in perfect condition. One of the nicest low-frequency synthesizers ever.

Cheers

Phil Hobbs

Not obvious from the manual. I'll have a look when I get under the cover.

Any luck, Lawrence?

Cheers

Phil Hobbs

So far I haven't cleared the bench to get a look in; I'm moderately slow, especially since the need is not too urgent. Had hopes for the weekend but other things took up the time. I did ferret through the manual and per the flowchart on page 8-31 I'm either looking at power supply or logic (Group O or Group A) since the fan does start, but the display (after that brief flash) is blank. Per figure 8-25 on page 8-22 the blower starting means the 5 v (unreg) supply is up though I'm having a time trying to find that on the full schematic.

I also need to find my paper copy of the manual as the PDF is rather annoying to use. This one I do have a paper copy (in hiding), the 5334A I only have a PDF.