Help from the Yoke gurus

rturb0

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I have a Happ Vision Pro (Kortek KT-2938) attached to a Samsung Tube.

The monitor was fine, no problems, then one time when I turned it on, nothing.

So a new HOT and a few other fixes (according to my repair guy) had it good as new - on his tube.

I get it back, install it on my tube, and here is what I get. (He has since checked the chassis on his tube again, and it works perfectly).

The brown and yellow are measuring 4.2 at the connector and at the lugs, but the picture says we have a vertical problem! (a shorted vertical winding? Which from what I have read a DMM wont detect).

Do any of you yoke gurus have a suggestion for what to check next? I need this monitor up and running by Saturday, but it is looking pretty bleak and I have no backup plan other than dropping $500 on a new 27" Makvision (argh).

Thanks in advance!
 

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That is vertical collapse. Very likely a chassis issue. Sorry I can't be of any more help than that for your specific model :(
 
Again, it is not the chassis. Here is what the chassis looks like on the other tube...
 

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Thanks Chris, that is pretty much what I expected.

-- Anyone know where I can get a compatible yoke?
 
You MIGHT be able to use a K7000 yoke. I have a VP yoke here that measures about 5.5 on the horizontal and about 15.5 on the vertical. Most K7000 yokes read about 3.5 on the horizontal and 13.5 on the vertical. That should be close enough that you should be able to adjust it in.

This would be the 19" K7000, assuming your VP tube is a CR-31 neck.

And if your yoke actually blew in a way that is obvious (burnt and broken windings), you can always try repairing it. I have a thread here somewhere about repairing a blown yoke...
 
Yeah I read your yoke repair thread, good stuff!

nothing obvious on this one, other than every piece of plastic on the yoke is so brittle, a stiff wind makes it shatter and fall off.

just so I understand, you are saying a K7000 19" yoke may work to replace a Kortek 27" vga monitor yoke?

Thanks for your help. Not sure what is reasonable to do next. My first thought was to sell the chassis and set the tube out with the trash....
 
yoke

check for a loose winding that broke off from the solder. I had a similar picture and that was the culprit.
 
just so I understand, you are saying a K7000 19" yoke may work to replace a Kortek 27" vga monitor yoke?

Oops. No. I missed the size of the tube. the 19" yoke would probably replace the 19" VP yoke.

You may try finding a 27" TV and checking to see if the yoke measurements (and neck pins) match what you should have. If so, then you could give it a try...
 
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