Re: Tek 4654M; No Trace, No +5V, No +95V; Help


Michael W. Lynch
 

On Tue, Oct 20, 2020 at 11:20 PM, <adesilva_1999@yahoo.com> wrote:


I wonder what made them use the same part number for two entirely different
things - one with the tripler and the rest of the HV circuitry and one that
has just the tripler!
They did not use the same part number for two different parts. The 455 and 465M both use the U550 designation in their schematics, both use the identical TEK part # 152-0635-00. 152-0635-00 is the "all in one" HV Multiplier along with other circuitry.

The 465(not "M)/465B/475 , on the other hand, use the 152-0552-01, which is the stand alone "6 stage" Multiplier, not usable in the 455/465M. This series of scopes has the other circuitry externally, on the main board. Much easier to fix, but less manufacturing friendly.

--
Michael Lynch
Dardanelle, AR

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