Main > Main Forum
arcade monitor, need help
<< < (3/4) > >>
steptoe:
Well,

N had an orange wire coming out of it on the harness, i decided to pull it out and put the green one and put the white one in P, still nothing.

Why would there be a factory set orange wire coming out of N ???????.

Im thinking a new harness and another PCB, i bought the one i have apparently in working condition.

I am correct in thinking the monitor works because in comes up ??

once again thanks guys
grantspain:
if the monitor turns on but you only get a white screen then 99% of the time the fault will be the video in signal missing either caused by wiring/game board/power supply
the other 1% of the time you get this fault is down to monitor set up or blanking problems
i do not like the sound of your jamma connector,you should print off a jamma pinout and then trace all the wires to check to see where they go,and get yourself a cheap multimeter to aid your fault diagnosis
grantspain:
o.k after going over the post a few times i can see the problem,jamma connectors go from 1 to 28 component side but they do not a to z as such solder side,g/i/o and q are missed out to avoid confusion
so your original wiring you showed is correct,put it back to that and then turn your attention to the power supply
 you should have red at pin 12 with the green directly opposite,blue at pin 13 with the white(sync) opposite and your black(ground can go to pin 2 or pin 14)
steptoe:
Grant, once again thanks  for ya help.

Im in australia and i noticed the power supply feeding the chassis in selected to 115v, in OZ we use 240v.

If everything in OZ is 240v wouldn't the monitor be 240v as well, unless theres some type of converter in there ??????. Theres a jump in the chassis board, you either put it on 115v or 240v. I got the cab a while ago, maybe the guys mucked around with things.

Once again guys any help would be great.

CHeers
grantspain:
this is when a multimeter is invaluable,just because you are 240v does'nt mean the machine is.if you put 240v into something set on 115v then you will blow the living poo outta it
normally the voltage will go through a stepdown transformer before going to the monitor/power supply-but that all depends where it was built
so the first thing to do is get a multimeter :)
Navigation
Message Index
Next page
Previous page

Go to full version