[Heathkit] Help with Heathkit IO-4510 'O' scope

[Murray Grandy]

Recently purchased subject scope. The 3000 volt section is not working. =
There are three diodes that form a voltage Tripler, I guess. All three =
diodes test open. The Heath part number is 57-56. When I check this =
number on NTE cross, I am not sure that it is the same diode. Also, in =
the parts list under description the diode is called SCM30. This number =
on NTE is nothing like the 57-56. I have the Heath MPL but, this 57-56 =
is not listed. Can anyone help with this.
Murray
PS. Also may need 3, .015 3KV capacitors.


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