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Yes, I did. All supplies are within the tolerances. Gerhard

A friend of a friend has a 2465A which is reportedly fine "except the trigger does not always work". Granted the scope may have other serious potential problems, but it would go cheap. Does the

Or, you could put a smaller value pot in series with the existing one, which would act like a "fine" control. This would be OK if you intend to put it in a blank plug-in. Another solution is to use a

Have you checked all the power supply test points on the main interface board? Be sure to check the -8 volts. Tom

Thanks for all who responded. Special thanks goes to Tom Jobe and JC for giving me the detail measurement. First of all, my scope is now working (or at least the PS is working). Measurement on R907 is

I can't determine, whether it is on the top or on bottom. It seems that the green light is a totally blurry or diffuse eliptical dot with the height of the screen and the width of aprox 2cm. The

Off-screen to the top or the bottom? Check that the vertical deflection leads are connected to the CRT as a first step. Does the beam finder make any difference? Dave

Likewise - bought some manuals and an input attenuator and front panel bits for a 2465B - great service. Nick

My 465B does'nt show a trace. The trace seems to run outside the visible ara of the crt. There is a green light running over the screen. This light varies depending of the intensity and reacts on the

I've posted a quick story of how I fixed a dead channel 3 in a 2246A (Mod A) bought at an auction: http://jan.rychter.com/enblog/2012/1/26/fixing-a-tektronix-2246a-oscilloscope.html I wonder about the

I have bought Tek parts from QService as well and have been very impressed with their excellent service and parts. Your story is a good one and shows service above and beyond. George

Dear community... This is not publicity, nor an advertisement, but just let me share with you the excellent experience I had with this supplier: http://www.qservice.gr/store/

Hi Tom and all, I would like to add my one cent opinion here... I have made many trials on this kind of inverters, and I am convinced that TIP41C is definitely NOT the right choice for this

Hi Tom! I believe that those silicon chips are custom ASICS. Specially because the substrate is tied to a -5V supply and the silicon have the TEK logo in a corner… From what I investigated, Tek had

I have acquired a T935 scope for essentially free. After cleaning it up, it seams to work very nicely. I am actually very impressed with the design, especially the mechanical. It is miles ahead of the

Make sure the readout isn't turned off. Some readout boards have a slide switch on them which shuts it off. And, some mainframes have a RO off or RO brightness control on the front panel ? HankC,

Hi Ed -- There's no separate 2nd anode wire to the funnel. I don't recall one on any bistable I ever worked on (could be wrong). The color looks a lot more like P1 than P31. -ls- "Ed Breya"

That's great - seems like it should work OK. I should have clarified that any wirewound pot will have lots of inductance - even a one-turn type, which would have a toroidal element. The multi-turn

Hi, Ed, Thanks. I just checked the schematic, and it looks like the pot in question does nothing more than set DC bias level on the emitter side of an NPN transistor, configured in common-base. Time

If the pot has to vary a fast risetime or wide bandwidth signal, a ten-turn style will likely not work. Those are built with many turns of manganin wire wrapped around a linear mandrel, then rolled