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Re: 7904 excessive vertical drift

 

If it is the channel switch, then disconnecting the vertical inputs to
the vertical CRT amplifier should remove the drift and remove some
doubt about where the problem is.

On Mon, 4 Apr 2016 00:15:45 +0200, you wrote:

Hi, years ago I experienced drift in my 7904 and it was caused by one of
the vertical channel switch ICs
on board A7. After exchanging the board the drift was no more.

G?ran
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