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Forum: Analog Circuits Tektronix 2445B repair

Author: ChristophK (Guest)
Posted on:

Anyone knowing the Tek 2445B scope? I have one which is exposing a
defect. The logic seems to be functioning. Only there is no beam. Not
sure whether it might be the HV supply or sth. else.

I got a circuit diagram. Anyone some old "Teknichian" who might be
familar with this instrument series and be able to pinpoint the most
possible fault
or some first checks to narrow down that fault cause.


--
Christoph
Author: marsufant (Guest)
Posted on:

There is diagnostic diagram 8a decision tree diagram) in the rear part
of the service manual.
Did you follow the instructions mentioned there?
And if yes, how far did you proceed?
Author: Rick (Guest)
Posted on:

Hey Everyone,
 I replaced RAM U2460 and recalibrated. I keep gettin TEST 04 Fail 02.
 What does the fail 02 mean?
 Thanks
Author: Rick (Guest)
Posted on:

It doesn't seem to take the calibration...

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