Philips PM3340 2Ghz Digital Scope

[GasperSB]

Hi!

I got my hands on Philips PM3340 2Ghz Digital Scop, but the inputs are not working. So I was wandering if anyone has found the schematic for the whole analog part of the osciloscope(i would be setesfied just with the input part of the schematic).
I bought a manual that was described as the service manual for this scope but in the end it turned out to be just for the IEEE-488 and rs232 interface of the scope.

Best regards,

Gasper

[Emo]

Hi Gasper,

Did you see the other thread already, I have part of the imput circuitry already in https://www.eevblog.com/forum/testgear/philips-pm3340-goodbad/msg836448/#msg836448

I am currently not in the vicinity of my files, drop me a PM if you need more info


Regards,

Eric

[Emo]

Hi Gasper,

In my case I just in time discovered that all 10uF capacitors on the input(and sync) amplifiers were dried out and dead. The scope uses a sample system on the analog input that can be verified by looking for a repetitive signal on the switching diodes. The main processor can be verified by hitting the green auto button.

Eric

[tautech]

This User manual with 239 pages might have schematics....not checked.
http://www.download-service-manuals.com/en/model.php?id=12262
8.47 Mb

[Emo]

For those interested, I just uploaded the full service manual to KO4BB. In some days it will be included in the manuals section.
(size approx 8.5 Mb)


Regards,

Eric

PS. If needed earlier give me a pm