All,
I had already posted this thread over on the Tek Scope Yahoo group, then realized Ihad not posted it here. So here it is for your reading pleasure.
I posted some info in another thread about a couple of parts scopes I picked up a short time ago. Well, Now that the 2445B is back in service, I was able to spend some time today seeing just how bad of shape the scopes were in. I started with the plain 2465 serial number B013xxx (scope A) as it appeared to be in the best physical shape, and I was actually able to get a dot on the screen. The other is a 2465CTS serial number B029xxx (scope B) which seemed to be alive according to the control panel, but there was absolutely no indications of a trace,
It appears scope A has an issue with the A5 board or something is keeping the processor from initializing properly. All voltages on it checked out ok.
So while I was removing the channel 1 attenuator from scope B to make sure I answered correctly in another post, I checked the voltages at J11, and had no indications of the higher voltages (+87, +42.4). Anyway, I figured the power supply was toast. So, with a good power supply in scope A, I figured I would change the power supplies between the two units and see what happens. As I was dismantling scope B to remove the power supply (quite the pain removing all the CTS stuff), I discovered a power supply cable unplugged from the power supply. I thought to myself, it could not be that simple, so I plugged the cable back into the power supply board, put everything in a safe configuration, without the options board, plugged it in and looked for smoke. Well, I didn't see any smoke, and the scope actually came back to life! It has a nice sharp trace, and all four channels have a trace. I did test channel 1 and can get a signal trace, channel 2, I was not able to get a signal trace. Anyway, there is hope for this scope. It does have the TEST 05 FAIL 42 error which according to the manual is positive voltage too positive. So it looks like I will have to spend some quality time with the power supply in the near future. I haven't decided if I am going to reinstall all the CTS stuff, as I currently have no need for the GPIB option. It does have the FET voltage plug on the back, that I'll try and keep. I need to read up on what all options came with the CTS scope.
Anyway, another Tek scope lives.
Mitch