Heath 4221 Oscilloscope

[Seth Stern]

I have a Heath 4221 oscilloscope in need of repairs. This one is
apparently not a Heathkit and appears to have been manufactured in
Japan. Does anyone out there have any suggestions as to where I might
take it (in the San Francisco bay area) or even find a schematic ?

 

[OZ132HOME]

I have a Heath 4221 oscilloscope in need of repairs. This one is
apparently not a Heathkit and appears to have been manufactured in
Japan. Does anyone out there have any suggestions as to where I might
take it (in the San Francisco bay area) or even find a schematic ?

ME TOO! I have a 4221 which powers on and the CRT heater comes on bu
it displays no trace. A schematic would be great.
-Mike OZ in Indian

 

[Michael A. Terrell]

ME TOO! I have a 4221 which powers on and the CRT heater comes on but
it displays no trace. A schematic would be great.
-Mike OZ in Indiana

Have you tried contacting Heath? They still have a lot of their
manuals and schematics available. http://www.heathkit.com/index.html

 

[Ken Weitzel]

Have you tried contacting Heath? They still have a lot of their
manuals and schematics available. http://www.heathkit.com/index.html

Hi...

The exact model number you guys are looking for isn't here, but
4221 is surrounded... (4210 and 4225). Maybe one is close enough
to get you started? Or maybe the owner of the site can help.

Be forewarned though, these aren't freebies, they cost.

http://www.sarrio.com/sarrio/rsman2.html

Take care.

Ken