Need Help!- CRT for Gleason(Phoenix) Gear Cutting Machine with GE Fanuc Series 150M

[M.RISHIKESH]

Dear All

Please find attached 3 different views of CRT.

Please find below details pasted on that CRT :

HITACHI CRT Type M34JCA41X (U) SR NO. m4M039541

COLOUR DISPLAY MOD NO C14C-1472D1F-A, A61L – 0001 – 0094 #A
200V 50/60 Hz, 0.6 Amp, S. No. GYL002708

MMC – II CRT/MDI
TYPE A02B-0087-C301 NO. N0241 1995 01

Sometimes display is not ok that means problem with HSYNC and VSYNC signals and so characters are becoming too small.

Kindly advice if it is possible to interface TFT Monitor's VGA port externally with this machine to replace defective CRT, we tried this successfully in case of GE Fanuc Series 160M which had Fanuc LCD, replaced it with Samsung Make TFT Monitor but unable to do so in case of this CRT

Best Regards,

M. Rishikesh

[fordav11]

bad CRTs are a very common problem on older CNC machines. The solution is very simple. Yes you can replace it with a regular LCD screen. You just need to buy a sync converter board. Cut off the Fanuc CRT connector and wire it to the converter board Red Green Blue & Sync inputs then plug the LCD screen into the converter board output.
An example of a converter board (CGA/EGA to VGA) is here.......
RGB/CGA/EGA/YUV to VGA ARCADE HD VIDEO CONVERTER BOARD | eBay

[M.RISHIKESH]

Dear Sir

Thanks for your reply.

We are trying to get sync converter board. As u r aware, there is a cable with 20 pin Female Honda Connector which is plugged on to Honda Coonector of CRT . please explain how to connect with board once again ???

Best Regards,

M. Rishikesh

[fordav11]

as I said, you need to cut off the custom connector and get to the wires.
before you do that look at the video wires connected to the chassis (your pic #2)
There should be a connector with 5 wires in it plugged into the chassis. look for red, green, blue. those are video signal wires RGB.
there should be a white and black wire also. those are sync and ground.
simply trace those wires to the honda connector using multi-meter and wire it to the converter board, Red, green, Blue, sync and ground
If you dont know how to do that then you'll need to find someone local who can do it for you.
if you take some higher quality pics of the chassis I can point out which connector you need to look at.
of course that would only be IF you still have the monitor connected in the machine. if not, look in the machine for the cable that was plugged into the screen. from there you should see another cable going to the chassis. that is the RGB+Sync video input connector. that is what you need to connect the converter board to. note that there are dangerous voltages inside monitors even when powered off. if you cant handle the job get someone qualified to fix it.