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 ?

Seth Stern Wrote:
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 but
it displays no trace. A schematic would be great.
-Mike OZ in Indiana


--
OZ132HOME

OZ132HOME wrote:

Seth Stern Wrote:
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 but
it displays no trace. A schematic would be great.
-Mike OZ in Indiana

--
OZ132HOME

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

Michael A. Terrell
Central Florida

Michael A. Terrell wrote:

OZ132HOME wrote:

Seth Stern Wrote:

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
but it displays no trace. A schematic would be great. -Mike OZ in
Indiana

-- OZ132HOME


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