Any Tri-sync tube swap info?

[8BitMonk]

Curious if anyone has successfully found a drop in replacement for a tri-sync monitor they own or done a tube swap on one.

There's no info on http://www.junknet.net/ and very little web reference on direct swaps or even impedance values for the yokes that I can find.

[lilshawn]

there is no "Drop-in" replacement as tube/yoke combonations vary so wildly.

about the best you can do is a "close enough", but that still requires an accurate measurement of the deflection yoke using an LCR meter. (a simple resistance measurement will not do contrary to what ANYBODY says.)

even then, chassis are getting hard to find since tubes are no longer being made.

that said, if you can find your yoke impedance, you may still be able to find a "weiya 666 model" chassis that could work.

[8BitMonk]

there is no "Drop-in" replacement as tube/yoke combonations vary so wildly.

That's what I figured, thought maybe someone may have found solutions for specific models.

about the best you can do is a "close enough", but that still requires an accurate measurement of the deflection yoke using an LCR meter. (a simple resistance measurement will not do contrary to what ANYBODY says.)

Good to know, I thought a resistance measurement would do.

even then, chassis are getting hard to find since tubes are no longer being made.

that said, if you can find your yoke impedance, you may still be able to find a "weiya 666 model" chassis that could work.

Specifically I'm looking to find a yoke and tube for a D9500 chassis I have.

[lilshawn]

Specifically I'm looking to find a yoke and tube for a D9500 chassis I have.

you might have luck selling off that chassis to someone who had one blow up on them. (would be the nice thing to do for another arcade person) they haven't been made for going on 9 years now so it could have a bit of a

About the only chassis I've managed to get a hold of (as of lately) was a 666 series Weiya chassis to fit a Dual focus tube "27 inch LG /Philips A68QCU970X V4" superflat tube. yoke impedance measurements...

Vh - 8.06
Hh - 0.311

(old makvision 3129 tube and yoke)

even then it needed some part tweaks to get the linearity decent but overall it worked. I mention a dual focus tube because the guy I sourced the chassis from did not have any more single focus chassis left...and wasn't sure he could get any more. (even his dual focus chassis where getting pretty short in supply.)

I'm not sure what I can suggest for you, CRT's are basically dead. I've personally been fixing what I can, but even parts like Amp IC's, HOT's, and gun driver transistors are getting harder to find since they where designed specifically for CRT use. and since CRT's are all but gone.... nobody can be bothered to make more of them and are all obsolete end of life.

[8BitMonk]

I specifically bought the chassis because it was NOS and relatively cheap, don't think I'd sell it. The seller still has several of them left I believe. I knew it would be a long shot to find donor pieces but figured at the price it's worth the gamble.

I was also asking because I have a Wei-ya 3129D and a WGD9200. I'm working on the Wei-ya now, I have a yoke for it and was able to find a chassis and tube replacement I think will work. The D9200 runs but may eventually need some work so I'm trying to find all the info I can.

I also noticed recently there's a large batch of NIB 19" tri-syncs from somewhere in Russia listed on ebay. Looks suspicious to say the least, expensive shipping with an estimated delivery of some time in May too.

CRT's are definitely dying off, standard res aren't bad to find but medium res and tri-sync's are becoming rare commodities. Besides the fact that they're dying off tri-sync's seem particularly hard to find good technical info on.