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Odd D9200 behavior

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grantspain:
there are some in extended factory menu i have no idea about also, pretty sure there is one that does something hv

lilshawn:
hmmm. interesting. I'll have to take a peek at that setting and see if changing it affects "the jitters" (i won't change by much... there are scary things in there.) i wish wells gardner had instructions regarding the service menu... maybe i'll shoot them an e-mail and ask if they have anything.

I am currently on my days off away from the shop, (stupid covid screwed everything up for us... still to this day) but, i will give that a go when i go back in again.

thanks for the idea. i'll let you know how it goes.

lilshawn:
looks like my factory mode only has color gain adjustments with the addition of bias control and turning off or on the "no signal" message.

i think the 9400 has the extra extra controls including the Hv setting you are thinking about.

the jitters does affect the OSD overlay. so it's not a signal generation issue. it's a horizontal drive/timing issue.

grantspain:
you tried a known good flyback?
I have had some do similar to this, notably on the weiya/rodotron tri sync

lilshawn:
the horizontal timing pulses (waveform 12 which is the h-control pulse from the KA2147 IC) feeds into a flyback drive and up into the yoke drive... since it tees off and go to the drive circuit for the horizontal yoke and the drive circuit for the flyback, they share a common pulse drive and that waveform is perfect.

in a nutshell the 2 systems are barely interconnected, and the waveforms in the flyback drive are perfect.

that said, i think i have a new flyback on a chassis i tried fixing a while back, but i think it might be a 9400 chassis. i'll have to take a dig for it.

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