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Vintage Test Gear and Workshop Equipment For discussions about vintage test gear and workshop equipment such as coil winders.

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Old 17th Aug 2022, 6:56 pm   #1
Alberto79
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Join Date: Aug 2022
Location: Italy, Pontinia (LT)
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Default HP 8640B rotary switch band and dev

Hi!
My HP 8640B donít work fine.
Only few band works fine.
I have disassembled Peak Deviation and Range Switch Assembly to repair with glue the wiper contact.

Now i have re-assembled all but there is a wrong assembly i think.

The selector peak deviation donít rotate fullÖ

There is a detailed procedure to re assembly all?

Tnx

Alberto
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Old 21st Aug 2022, 8:46 pm   #2
Julesomega
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Default Re: HP 8640B rotary switch band and dev

Alberto - You may find some helpful images in two old threads here:
HP8640B signal generator: range/FM tracking
HP8640B: A9 assembly
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