Keysight / Agilent MSO-X 3024A Repair

[cproo12]

Hey there, I have a broken scope that I would like to fix.

I am getting an error message: "The probe power supply has been shut down because an overload was detected. Remove at least one probe and press OK."

I have no probes installed. I took the entire scope apart and checked the PCBA for damage but I didn't see anything obvious, bit of dust that I cleaned off but this did not resolve the problem.

I'm not sure how it happened, but any advice would be great. I can press OK, but the message immediately pops up again preventing me from doing anything.

Tried reaching out to Keysight and they quoted me $4,000... I am willing to pay money to repair but not that much! I don't even think the scope is worth that much money.

[Shonky]

Start with the basics? Voltage rails? Maybe if you can easily disconnect each channel's supply to figure out which is the faulty one. Presumably there's no info in a log as to which channel is affected?

https://xdevs.com/doc/HP_Agilent_Keysight/Service%20Guide%20for%202000%203000%20X-Series%20Oscilloscopes%2075019-97084%20c20141015%20%5B150%5D.pdf
or
https://www.keysight.com/au/en/assets/9921-02449/service-manuals/2000-3000-X-Series-service-guide.pdf?success=true

[cproo12]

Wow! I am so sorry! I have a copy of the service manual I downloaded from their website and my copy does not have that whole "Troubleshooting Internal Assemblies" section.

Apologies again for not checking the links in the sticky more thoroughly and thank you for the link

I will post back with an update!

[Shonky]

Wow! I am so sorry! I have a copy of the service manual I downloaded from their website and my copy does not have that whole "Troubleshooting Internal Assemblies" section.

Seems to be a HPAK thing. Often the "current" official manuals have had information removed. For older gear sometimes they have full schematics that are simply removed in the newer versions (e.g. 34401A)