Cant find info on WG 25K8112

bryan95502

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I have bought 3 of these monitors

These are EGA, I dont think they are CGA also

Two are missing power boards.

One has the power board, but it has a blown fuse

Odd power connector on it.

Not sure how to power it yet.

This is the info the guy I got them from found:

K8000 - p649 power board type - medium rez 25" 33" - P655 P657 P645 P648.



The numbers off the monitors are:

Chassis P655 Model 25K8112

Chassis P657 Model 25k8112

Chassis P655 No sticker with model number

Found this info on K8000 series:

For 25" Medium res, used in VR, VF1, and some Atari System 2s like 720, Hard Drivin sit down etc.etc.


Anyone have any information?? Schematics? Maybe a manual for Hard Drivin or 720 will mention this model?
 
Necrobump.

I also have 2 of these, both missing the power board. Does anyone know if I can repurpose the tubes with K7000s?
 
the yokes are different. the plugs aren't even the same.

you can replace the power supply boards with ones from U3000s. I have 2 NOS ones from WG here.
 
I guess I was more interested in getting any standard res chassis working in it instead of medium, since I'm interested in exactly zero games a
25" medium res only monitor would work for.

I don't have any specific plans for them, I literally picked them up from behind a building that was throwing them out. They've just been sitting in the garage taking up space ever since.
 
I guess I was more interested in getting any standard res chassis working in it instead of medium, since I'm interested in exactly zero games a
25" medium res only monitor would work for.

I don't have any specific plans for them, I literally picked them up from behind a building that was throwing them out. They've just been sitting in the garage taking up space ever since.
It is funny that medium res monitors are fickle like that.

When you need them, they are super expensive... when you have extras you don't need/want... you can't give them away.
 
the K8000 was a poorly made abomination. Wells-Gardner had what I would consider to be good ideas for the time, just executed very poorly. U5000 was supposed to cover up this mistake and had its own share of issues. I think with those though it wound up being underwatted resistors or something, cause all the big ones seem to burn out and they break other things.

what I do know about the K8000 is the horizontal yoke plug will scorch and that pops the 24V regulator in the power supply to my understanding. this will manifest itself as a chassis that's impossible to sync because I guess that's what that voltage is for. I was never able to successfully fix that. was a little out of my league back in 2014 and by then the monitor was dumped.

I will never understand why WG revisited this design for the U3000, though I gather those were more reliable with the switching mode power supply board instead.
 
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