MetalworkingFun Forum

Came in to work one morning and the monitor on my Okuma LB-15 Cnc lathe was not working. All the machine controls were working just fine, but nothing on the screen......which means......no chips being made.....which means boss not too happy!!

So, to make a really looooong story short...........

Called Okuma, they sent out a tech.......several hundred dollars later determined it could not be fixed..........quoted me a replacement for a measly $6,813.00!!!

Well, that went over like a fart in church.........so after doing some research online, and discussing this predicament with others in another forum who have experienced this same dilemma, I found a place in Toronto that had just what I needed specifically set up for my machine and control and best of all it was only just a tad over $1,200.00.

A couple days later the man in the big brown truck showed up and thus my project began........

Below is a pic of the control with the old CRT monitor in it.





Here's a pic of the inside of the unit.




The removal of the screen from the control and the CRT from the housing was by FAR the most time consuming part of the job.







With the CRT housing out of the machine it was time to extract the monitor from the housing.






Success......the battle is half over!






With the CRT removed there sure is a lot of room in there now, and only three connections to worry about!





Here you can see the replacement LCD monitor kit in its entirety.



I assembled the mounting brackets loosely to the monitor and placed it in the housing for final adjustments before tightening in place.




A couple of drilled clearance holes for fasteners was all that was required.






Once the connections were all made it was time to re-install the unit in the control.




Now for the moment of truth................and hopefully no little puffs of smoke!!

Phew.........man was I happy to see everything working again!!!





Back in business once again!!!




Best Regards,
Russ

Nice rescue Russ!

Ed

Nice victory Russ! I would be after Okuma to have them refund their tech's charges at the least.

Nice save (and saving) Russ. This is the reason I have manual machines

I appreciate this is an old thread but . . . .

I went through this with my Beaver Partsmaster a few weeks back. Totally dead monitor but Heidenhain TNC355 control working fine - spare monitors like hens teeth and even ones with burnt screens fetching prices that sound like telephone numbers. I'm usually pretty good finding electronic faults but this one had me stumped. It was an internal switched mode psu fault but it beat me. Found a chap in the midlands selling drop in TFT replacements for iirc £450 - got one, dropped it in and everything was back working.

Then a couple of days later I got an email in response to a question I'd posed on a forum weeks earlier regarding one of the chips in the smpsu. He pointed me to a very similar (but different) part number & data sheet. In the data sheet was an application note, and darn me if the circuit wasn't practically identical to the Heidenhain monitor. The Heidenhain designer had oviously cribbed the circuit, which allowed me to fix the fault

Net result, I now have a spare monitor all wrapped up and tucked away inside the machine cabinet