Hmmmm....
I have a 465B and its a rather complex beast.
But on the other hand second hand spare parts, whole circuit boards and sub modules are pretty much available and reasonably affordable.
Looking in the 465B service manual trouble shooting flow chart it says:
"Trace off centre horizontally"
"Check Q4455, Q4465, Q4481, Q4482, U4491"
Then,
"Trouble shoot horizontal amplifier" And that is all it says.
The above transistors and flip flop all have to do with selecting sweep A or sweep B. Everything, including X/Y mode appears to have the horizontal shift problem, so its most likely to be on the horizontal amplifier board.
There are a LOT of different power supply rails involved with all this, and I would assume that if one of them had a problem it would have more far reaching effects than just a horizontal shift.
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