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Tek 2465 OSD - blanking problems?

J

jkn

Jan 1, 1970
0
Hi all
A Tek 2465: in basically good condition, but there is a problem
with the OSD. The characters appear with 'digital noise' around them,
and the display brightness control has little effect. Any suggestions
if this likely to be a problem related to some of the hard-to-find Tek
custom parts?

Thanks a lot for your thoughts
Jon N
 
J

Jim Yanik

Jan 1, 1970
0
Hi all
A Tek 2465: in basically good condition, but there is a problem
with the OSD. The characters appear with 'digital noise' around them,
and the display brightness control has little effect. Any suggestions
if this likely to be a problem related to some of the hard-to-find Tek
custom parts?

Thanks a lot for your thoughts
Jon N

First,verify your power suplies meet voltage,noise and ripple specs.

IIRC,there was a pot somewhere to adjust RO wiggle.
the CAL procedure ought to mention it,or the circuit description.
 
J

jkn

Jan 1, 1970
0
Hi Jim
First,verify your power suplies meet voltage,noise and ripple specs.

IIRC,there was a pot somewhere to adjust RO wiggle.
the CAL procedure ought to mention it,or the circuit description.
Thanks for the suggestions; I'm flicking through the service manual at
the moment. It's a 'scope I won at auction and am hoping to sort out.
I'll let you know what I find!

Thanks
Jon N
 
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