PYE 845751/01, i am looking for a service manual or schematic?

[Bjorn Andersson]

It is a single unit 845751/01 in a 19" rack 845752/02. The main pcb is AG27764 rev 5? and the oscillator pcb is AG29619 rev 2?
When i power on the unit the two output transistors gets hotter than hell! Both have heatsinks but gets really hot...
Is there anybody on the forum who has worked on them?

 

[Rob Flinn]

I have worked on some of these. I do have the 845751 & I will upload to tech docs section. I would look at whether your unit needs a recap because it looks to have the original caps.

 

[Bjorn Andersson]

That would be great Rob!
Yes, the compressor needs a recap job.
The rubber seal on all blue electrolytics are rather shot...

 

[Bjorn Andersson]

I have finally found a schematic for the PYE 845751/01 compressor with the noise gate pcb.
Big KUDOS to velo for uploading a picture of the big schematic in this thread: https://groupdiy.com/threads/pye-4060-with-ps2-49-1742-psu-to-american.84309/
The schematic is available in the file section now