Can't find one on BAMA, or any other site I've tried. Need to get this thing going to fix old radios. Powers up and CRT filament lights, but no trace. Where is the second anode high voltage connection on this thing???

Hi

Here are Heath schematics:

http://web.archive.org/web/20020201194744/http://www.circuitarchive.co.uk/heath.htm

Even if you don't find the exact model other Heath oscilloscopes my be similar?

This site sells Heath information:

http://www.circuitarchive.co.uk/heath.htm

Norm

:Can't find one on BAMA, or any other site I've tried. Need to get this thing going to fix old radios. Powers up and CRT filament lights, but no trace. Where is the second anode high voltage connection on this thing???

:Hi
:
: Here are Heath schematics:
:
:http://web.archive.org/web/20020201194744/http://www.circuitarchive.co.uk/heath.htm
:
: Even if you don't find the exact model other Heath oscilloscopes my be similar?
:
: This site sells Heath information:
:
:http://www.circuitarchive.co.uk/heath.htm
:
:Norm
:
::Can't find one on BAMA, or any other site I've tried. Need to get this thing going to fix old radios. Powers up and CRT filament lights, but no trace. Where is the second anode high voltage connection on this thing???

Thanks Norm.
The IO-4550 looks similar. Looks like they feed a negative 1700 volts in on the cathode.
That's where I'll start checking.

::Hi
::
:: Here are Heath schematics:
::
::http://web.archive.org/web/20020201194744/http://www.circuitarchive.co.uk/heath.htm
::
:: Even if you don't find the exact model other Heath oscilloscopes my be similar?
::
:: This site sells Heath information:
::
::http://www.circuitarchive.co.uk/heath.htm
::
::Norm
::
:::Can't find one on BAMA, or any other site I've tried. Need to get this thing going to fix old radios. Powers up and CRT filament lights, but no trace. Where is the second anode high voltage connection on this thing???