U3641 advantest Spectrum analyzer.

[Ken121]

Thank you for any and all help.

[tggzzz]

Thank you for any and all help.

Without more information, I suggest you try Advantest.

Alternatively, have a look at https://entertaininghacks.wordpress.com/library-2/good-questions-pique-our-interest-and-dont-waste-our-time-2/

Failing that, if you look elsewhere on this forum then you will see that replacing the electrolytic capacitors solves many problems

[SpencerTC]

Well, without knowing a little more, there is little anyone can do.....you can't fix a problem that you have no information about.

What is wrong with it? Will it turn on? Is there any obvious physical damage (evidence of impact/water/overheating)?

What have you tried so far? Have you disassembled the instrument yet? Did you notice anything out of the ordinary when you looked in it (eg. vented electrolytics)?

Have you searched the web for common issues with this particular model? Have you searched for the service manual?

Do you have any experience repairing electronics at the component level or are you just asking if it's possible to just swap a module out and call it fixed?

Next time you make a topic, I would recommend you explain whatever it is about a little more. People can't help (and often won't want to) if they don't know anything about the issue (or about you or your reasons for wanting to do what it is you're asking)

Good luck!