[Test-Equipment] WTD: Help with old scope problem

[J. Forster]

Hi Joe,

OK. I now have and can view the prints. See questions below:


>>>>> >- There is no horizontal trace, only a spot.
>>>>> >- The spot can be moved in both directions (V&H).

Can the spot be moved from off-screen left to off-screen right?
Ditto V spot?

>>>>> >- The focus control has only limited effect on the spot.

Will it focus to a good spot?  Does the Astigmatism control work?

>>>>> >- The intensity control has no effect on it.

Is the CRT cathode jumper (rear panel) in place?

>>>>> >- The tubes related to the horizontal and sweep sections check OK.

Have you checked all the regulated Power Supply voltages?

>>>>> >- There are no broken, burnt or overheated components.
>>>>> >- LV voltages are OK but I cannot get a reading on the HV test point
>>>>> (5642 rectifiers).
>>>>> >- If I apply a signal from the voltage calibrator, the spot splits
>>>>> on
>>>>> two.
>>>>> >Any suggestions as to the cause of these problems (and fixes) will
>>>>> be
>>>>> greatly appreciated.
>>>>> >Thanks
>>>>> >Joe Orgnero  VE7LBI


Best,

-John

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