The seller was very nice and gave me a partial refund. So, it ended up costing me $25 to keep this unit, so that I can try to fix it.
Hopefully with some help from members on this forum I'll be able to fix this unit. It is a very nice piece of equipment and it would be a real shame to see it go to waste.
I made a couple of preliminary diagnostics videos. But basically, I can get only one type of signal out of the unit, only when the function selection switch is on sweep position. To be honest, it would take longer to read through a detailed description than to watch the videos that I've recorded. And I guess I can keep making videos, when needed, in addition to posting progress reports in this thread.
In the following video you see me do some preliminary tests.
https://youtu.be/3Tj3PfYUIIgIn the following video I tested the power supply section.
https://youtu.be/ZAxnDHOlPHkWhile I was recording my second video I noticed some oxidation on the leads of on of the socketed IC's.
Could this be at least part of the problem? I didn't pull out this IC yet, as I don't know if that might cause more problems, as I don't really have a plan how to clean the oxidation from the socket.
Any help fixing this unit would be greatly appreciated.
Thanks...