10D-203-3 Heath Oscilloscope

[John Forster]

Many thanks to all of you who have so graciously responded to my request for
help with the focus problem on this scope (which actually is the Bell &
Howell scope made by Heath). The problem, as some of you thought it might
be, was the 3.3 meg resistor from the focus pot to ground. The value had
changed to 8.7 meg over the years of use (and storage). Replaced the
resistor with a new 3.3 meg and the focus problem is history.

Thanks again to those of you who sent schematic files and the pdf file of
the Trouble Shooting manual. Your generosity has been greatly appreciated,
especially when I was about to give up on it.

John Forster

----- Original Message ----- 
From: "John Forster" <johnforster at USFAMILY.NET>
To: <HEATH at LISTSERV.TEMPE.GOV>
Sent: Wednesday, April 11, 2007 3:26 PM
Subject: 10D-203-3 Heath Oscilloscope


I have a 10D-203-3 scope which will not focus, the dot will only focus down
to about 1/4" on the screen. Does anyone have a manual or schematic for this
scope?

Thanks,

John
Afton, MN


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