SB220

[Neil Morrison]

Have you measured the current drain? Are there any series resistors?
Are the HV filter caps good?

Neil

----- Original Message -----
From: "Alex Wa4Ak" <LAWALEXKAPLAN at AOL.COM>


> I have an SB220 in near mint condition.  My problem is that when
testing
> according to the manual, the high voltage readings are a bit low,
perhaps 400
> volts low.  I think it may be the silicon diode stack in the high
voltage power
> supply, but the manual and schematic only refers to them as silicon
diodes with
> a Heath in-house part number of 57-27.  Does anyone know a good
modern
> substitute for these and a source for them?  Any assistance would
be appreciated.

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