6M CRT Blacked out

[super-duty]

I just got a Matsuura mill from a friend that the screen went black on.

Every thing else of the machine works fine. He was running the same part so he didnt need the screen.

My question.... Is there anything I should be looking for before I buy a used one? I am going to have a tech come out to look at it later this week.

Also when the machine is powered up the tube on the back of the CRT is glowing orange.

I am just trying to learn what I can before he comes out so any advise would be much appreciated.

[tc429]

assuming this is the little 9" monochrome monitor, if so, some suggestions-
if its on a machine that vibrates, look for cracks on the flyback pin solder joints- theyre in a round pattern/solder side out on the side of the CRT...weve had MANY quit from this...usually little tiny circular cracks arount where the pins go thru...just turn it off/ remelt all the solder pads with a iron, or a small gun even- usually fixes them up. If you snap that grey perforated plastic thing off the top/back of the crt chassis, there are pots in there- possibly just a bad wiper on the brightness pot, shouldnt hurt just to rotate them back and forth just a little, see if you get anything.

*if* your control has graphics (I'm not sure on this for the 6) the crt plugs into the graphics card- but there might still be another standard video output- think on a 6 it was CCX5 on the CRTC/Puncher card. I recall a 0-C we had that the video got all garbled up- we just moved the cable back to the normal port and forgot about it.

also look in your maintenance manual- the 6 CRT could be shut off by hitting 2 keys at once, think it was cancel+origin, dont recall if you had to toggle them again to wake it up, or if 'any key' would light it back up.


if its a 14" color, good luck- we had a quite a few, most didnt hold up well at all- the flybacks would burn up in a literal way, and Fanuc quit selling them- they would rather sell a new monitor for like $4400.00...we pitched ours and switched back to 9" just made a plate to shrink the cabinit hole for the smaller MDI/CRT as the ones in the 6 and the R-C robots we scrapped out hundreds of would interchange...if you want a 14", (or anything else Fanuc) email the guys at fanucworld.com, I know they found a source to custom build 14" replacements pretty reasonable.

[super-duty]

Yes it is the 9 inch monochrome.... I will look for the cracked soldier joints in the AM.

Thanks for the help I will update tomorrow.

[canwong]

Maybe only some parts inside broken, find and replace it would work.