Re: 7603 weirdo inverted Z axis

Albert Otten

Hi Marian, do I understand you correctly if I think that the Z amplifier itself is working correctly but that the CRT gets brighter when the Z output at B gets lower (less positive)? In that case I have no idea what's going on, but then you should also "complain" that the Readout is shown as negative image.
If the Readout is correct then the logic board is suspect, for instance a faulty U99.


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