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tek 465b

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jsblues81:
for anyone who would know about these symtoms. 1)the horzontal sweep starts and ends in the middle part of the screen. it does not extend to the left and right ends of the screen. 2)the focus only gets so sharp. I can't sharpen the display beyond a certain point. 3)the invert button does not invert and flies off the sceen.please help.

PaulAm:
Rule number one: Check the power supply voltages and their associated ripple.

Power supplies are a common failure point and these scopes do not work at all if the power supply is not within spec.  Check ALL of the low voltage supplies.  One of them provides a reference for the others.  Get a service manual, OK copies are available for free on line

jsblues81:
Very good advise..I do know better but I thought maybe these kinds of symptoms were unrelated to the ps. I guess not....as always. I'll get back after a full re-cap.

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