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HOW TO FIX a wide trace (noise) on Tek 465 and 475 scopes:
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I have posted a detailed procedure (another free freebie) for
fixing a wide or noisy/fuzzy trace on Tektronix 465 and 475
(most or all Tek 400-series) oscilloscopes [i.e. cleaning the
Volts/Div Attenuator (and Bandwidth Limiter and Trigger View)
switch contacts], at:
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http://www.fullnet.com/u/tomg
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It may work wonders for your scope. And you can probably do it
yourself, even if you've never opened a scope, before.
It will also usually help repair cases where changing the
volts/div switch causes trace distortion, or intermittently
gives the wrong vertical amplitude (v/div gain error/problem).
Cheers,
Tom Gootee
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