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

[Joseph Orgnero]

Hello
For a number of years Ihave been using a Tek 310A on my bench. I like it on spite of its age and limited BW because of its small size and sharp trace. Recently,after not have been used for some months, presnted a number of problems.
- There is no horizontal trace, only a spot.
- The spot can be moved in both directions (V&H).
- The focus control has only limited effect on the spot.
- The intensity control has no effect on it.
- The tubes related to the horizontal and sweep sections check OK.
- 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
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