Without actually knowing anything, I now have two 2445B's, one 2465, and just now a 2445 plus the cute little SC501 that fits in a TM case.? The first 2445b was bought to use, then the second because it worked well on all but channel one whose attenuator hadn't been adequate for oomph of whatever Bozo plugged it into. I had one of our colleagues re-cap the power supply, change the NVRAM for a FRAM, and replace the leaking SMD caps and fix the damage they'd done. This scope is now VERY nice.
Now I had a really good 2445B and the second one which also now has FRAM and better caps on A5, but whatever PS caps were in it. It works ok manually but the Parametric functions don't work. It was a lab scope so footless, no handle,? and missing those nice rubber things on the rear.
So fool that I was I thought I'd buy just those things ..... hah, hah, hah - cheaper to buy a parts scope which is where the 2465 came from. Someone had let it down a bit ungently on the time knob, destroyed the knob and broke the VAR pot shaft.? I was able to find a complete right-side panel on ebay and when it replaced the bad one all was well and the scope worked nicely although the trace could lose a bit of weight.
I also discovered that the shaft on the trace-intensity knob had also been there for the great fall, so it was replaced and now the thing is perfect, more or less.
Thinking that no rational person needs so many scopes I offered it to the local university science dept who had mentioned to me that they needed a good analog scope - Voila they would get the 2465.
But then when I was cleaning it up, I decided to keep it.
There was a 2445 cheap on Ebay which allegedly needed repair. It didn't and it is really nice - so FAU gets that one. And its trace is really fine.
So I'm back to where I was at the end of last week with too many scopes.
Most of the problem seems to be with "parts" scopes.? If I got one that actually didn't work it would be what I'd expected, but the damn things keep showing up with nothing serious wrong with them. And I cannot bring myself to scrap a working scope.? I doubt if any of you can either.
What am I missing?
