K7000 25" lines in screen x2

tron guy

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So I picked up a pair of 25" k7000 chassis'. One with remote board , one without.

Both had notes that said working, need rebuild. I have one 25" monitor, a k7400 and it's a pain in the ass to get to, so I rebuilt both of these prior to testing.

New flyback, caps, massive reflow throughout both boards.

Both have very similar symptoms.

Lines through the screen (pictured)

The black/brightness pot on the 2 chassis' (not the flyback brightness), do virtually nothing. I pulled one and tested it and the range is spot on.(wasted trip to frys).


Contrast is turned up 100% just to see the image.
 

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If I turn the flyback brightness knob down I almost completely get rid of the lines, but the picture is too dark.

Do they just not like the k7400 yoke?
 

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Well I went and pulled out the trusty tpg thinking maybe the multiboard with this chassis/yoke combo was the problem.


Using tpg, I can make all adjustments and remove the red lines. Black/brightness pots are now relevant again.

End thread I guess. 😀


I want to mention that I have no use for these chassis' and intend to sell them. Are there any obvious concerns based on my thread so far?
 

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Last edited:
Even better yet, I pluggged the multiboard back in and the pic is nice. Guess I just needed to do some fine-tuning adjustments when it was all said and done.
 

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