Main > Monitor/Video Forum
Vertical hold problem on Hantarex MTC 9000
Nipedley:
Hi there guys, I have a problem with my Hantarex mtc 9000 monitor ( I believe it is a 9000, it may be a 9110 but I hear there isnt much difference )
I bought the machine a few weeks ago and have been repairing it since (machine in question is a Sega MegaTech cabinet), but I still havent been able to stop the picture from rolling. It does this on every game ive tried in it, including the original board. I've tried swapping out the remote control boards but still no luck and the sync's are correctly connected, as I've tried using my own wired video harnesses and the cabinet's original unmodified wiring (with the megatech board)..
any ideas? The monitor is very hard to access and im somewhat of an electronics newbie so a capkit is pretty much out of the question :(
Nipedley:
BUMP .. still have this trouble :/
Any ideas? Or at least let me know if I HAVE to do a capkit/chassis replacement
pcb:
The main difference from what I understand, (I had a 9110), is the fan over the flyback?
Anyway, is the video ground hooked up correctly? How about sync? A capkit is always the correct place to start if the wiring is all correct. Randy Fromm has a t-shooting chart on the MTC9000 monitor here:
http://slot-tech-ftp.serveftp.com:8080/technical_department/
Best,
- Mike -
Nipedley:
Well, my machine uses a unique wiring harness (megatech) but the sync wire is the 4th pin along, ground is 6th, for some reason (?) the wires "swap over" inbetween with a connector, so the white wire in pin 6 becomes ground, and the black wire in pin 4 becomes white (the sync) - this is confirmed on the pinouts i have of the motherboard, and i have tried it the other way round.. So Pin 1 - Blue, Pin 2 - Green, Pin 3 - Red, Pin 4 - Comp. Sync, Pin 5 - Empty, Pin 6 - Ground. Is this correct?. I've tried both + and - sync polarity on the monitor itself, it is indeed negative sync.. any other ideas?
Ken Layton:
Hantarex are well known for needing lots of capacitors.