I need to replace the CRT in my Tenma 72-6602 oscilloscope.
It goes by two numbers. They are 75AWB31 and C312P31B.

Googling finds no one who sells them and very little info.

Anyone have a spare laying around or know of a more common
substitute? I would like to swap for or purchase outright.

Any help or suggestions appreciated.

phil

Try a Google search for CRT suppliers. Can't recall the name of the one I
found, but there were a couple that are able to cross reference the numbers
and can tell you which of the two is actually the CRT number.

73-K8AC


"Phil" wrote in message
7.142...
I need to replace the CRT in my Tenma 72-6602 oscilloscope.
It goes by two numbers. They are 75AWB31 and C312P31B.

Googling finds no one who sells them and very little info.

Anyone have a spare laying around or know of a more common
substitute? I would like to swap for or purchase outright.

Any help or suggestions appreciated.

phil

If you can further cross to see what type goes in a H-P 1222A scope -
and find a match - I've got one of those here free for the cost of shipping.

-Bill
exray at coqui dot net

Floyd Sense wrote:

Try a Google search for CRT suppliers. Can't recall the name of the one I
found, but there were a couple that are able to cross reference the numbers
and can tell you which of the two is actually the CRT number.

73-K8AC


"Phil" wrote in message
7.142...

I need to replace the CRT in my Tenma 72-6602 oscilloscope.
It goes by two numbers. They are 75AWB31 and C312P31B.

Googling finds no one who sells them and very little info.

Anyone have a spare laying around or know of a more common
substitute? I would like to swap for or purchase outright.

Any help or suggestions appreciated.

phil

Bill wrote:

If you can further cross to see what type goes in a H-P 1222A scope -
and find a match - I've got one of those here free for the cost of shipping.

-Bill
exray at coqui dot net


That should be H-P part number 5083-3872

http://www.sphere.bc.ca/test/crts.html for common CRTs.

http://www.sphere.bc.ca/test/hp-crts.html for HP CRTs.

--
Former professional electron wrangler.

Michael A. Terrell
Central Florida

Michael A. Terrell wrote:

Bill wrote:

If you can further cross to see what type goes in a H-P 1222A scope -
and find a match - I've got one of those here free for the cost of shipping.

-Bill
exray at coqui dot net



That should be H-P part number 5083-3872

http://www.sphere.bc.ca/test/crts.html for common CRTs.

http://www.sphere.bc.ca/test/hp-crts.html for HP CRTs.


FWIW, the manual calls it a HP Nr. 2090-0032 with an errata sheet
changing it to 2090-0031. They've probably changed numbers several
times since then.

-Bill

Bill wrote:

Michael A. Terrell wrote:

Bill wrote:

If you can further cross to see what type goes in a H-P 1222A scope -
and find a match - I've got one of those here free for the cost of shipping.

-Bill
exray at coqui dot net



That should be H-P part number 5083-3872

http://www.sphere.bc.ca/test/crts.html for common CRTs.

http://www.sphere.bc.ca/test/hp-crts.html for HP CRTs.


FWIW, the manual calls it a HP Nr. 2090-0032 with an errata sheet
changing it to 2090-0031. They've probably changed numbers several
times since then.

-Bill

Thanks, I'm collecting as much of this information as I can and creating
a database to post on one of my websites. I know some products go
though a number of changes as design changes are made. Sphere has some
CRTs in stock, but a lot are listed as "sold".
--
Former professional electron wrangler.

Michael A. Terrell
Central Florida