Affy420
Newbie level 3
Hi.
I've just bought myself an old scope (Beckman Industrial 9020) for a bit of DIY testing on some circuits I'm building with the kids.
Really nice bit of kit, and all seems to work, except the focus is shot (large disks visible instead of small dots for Ch1 and Ch2) and also the intensity knob makes a slight difference to the brightness.
Of the two issues, the main one is the focus as that prohibits the real use of the scope and I suspect that fixing this may bring the intensity into line.
It seems that the OPPOSITE problem was solved in March 2009 (ooops, over 10 yrs ago now!) where the OP had good focused, but no intensity/brightness control.
Previous thread link - https://www.edaboard.com/showthread.php?144350-Beckman-industrial-circuitmate-9020-oscilloscope
The fix had been proposed by Chris Williams (Chris56000 - https://www.edaboard.com/member.php?201035-Chris56000) who seemed to have detailed knowledge of the componentry and workings of the scope.
In a way, I'm reaching out to see if this fellow is still around (not too far from where I live in Birmingham, UK) and happy to assist.
Any other assistance would also be gratefully received!
Thanks
Affy
I've just bought myself an old scope (Beckman Industrial 9020) for a bit of DIY testing on some circuits I'm building with the kids.
Really nice bit of kit, and all seems to work, except the focus is shot (large disks visible instead of small dots for Ch1 and Ch2) and also the intensity knob makes a slight difference to the brightness.
Of the two issues, the main one is the focus as that prohibits the real use of the scope and I suspect that fixing this may bring the intensity into line.
It seems that the OPPOSITE problem was solved in March 2009 (ooops, over 10 yrs ago now!) where the OP had good focused, but no intensity/brightness control.
Previous thread link - https://www.edaboard.com/showthread.php?144350-Beckman-industrial-circuitmate-9020-oscilloscope
The fix had been proposed by Chris Williams (Chris56000 - https://www.edaboard.com/member.php?201035-Chris56000) who seemed to have detailed knowledge of the componentry and workings of the scope.
In a way, I'm reaching out to see if this fellow is still around (not too far from where I live in Birmingham, UK) and happy to assist.
Any other assistance would also be gratefully received!
Thanks
Affy