Re: 465B strange ripple


satbeginner
 

In my 475A I was able to find what divider had the " worst" contacts, by swapping one at the time between Ch1 and Ch2.

I also soaked them one at the time in IPA and turned both the C set screws, to find the problematic one.

In the end, after cleaning, they were all ok, but had all dirty contacts.

As a test you could ground the output of the attenuator, just before the input of the amplifier.

Again, one channel at the time to see what happens.

Leo

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