Neo Geo MVS 2 slot - monitor not working

[MadmanMoyer]

I recently got a Neo Geo MVS 2 slot and was cleaning it up. I was having problems getting my monitor how I wanted it, so with the control board down I was tweaking the knobs for contrast, brightness, etc. Well, while the system was on I unplugged the connectors to that board to see if maybe I could clean those and see if that would help. When I plugged the one back in the monitor went and stayed black and there is now a beeping noise coming from the circuit board that connects to the monitor. When I unplugged the fuse it stopped beeping so I thought that may be the issue. I bought the correct fuse and plugged it in and I still get the same sound. Does anyone have any idea as to what the problem may be? I did notice a capacitor was loose and that is probably the problem. I don't have much experience with this type of stuff and want some advice. And I don't want to get zapped. I appreciate any help that someone may have to offer.

 

I have attached 2 pictures of the capacitor to give you an idea of what the problem may be. That has to be the problem, right?

[Waterborn]

First, NEVER work on a monitor chasis while the game is powered up. It is particularly important to avoid the flyback feed into the tube (the "suction cup" that fits into the back of the actual picture tube) as the tube can hold a very high voltage and cause you severe pain and suffering if you become a ground between it and the floor. My guess is that you may have fried something in the game board (the source of the beep you are hearing) when you uplugged the video feed while the game was one. First step is to check the monitor chasis (where all those capacitors are located) to see if there is a blown fuse somewhere on that board. If you are lucky, this may be your only issue. What problems were you having before the monitor went? Most basis monitor issues (such as screen size, v-sync, h-sync, color problems, etc) can usually be remedied by replacing the capacitors on the monitor and neck boards (a process frequently call a cap kit replacement). You can order new cap kits from Bob Roberts for under $10. You need to be ok with soldering, but doing a cap kit is a snap. You will want to discharge the monitor first if you plan to work on the chasis so you don't get a serious shock as mentioned earlier. Also, check out KLOV for a bunch of good FAQ's and forums on all things coin-op, including game and monitor repairs. Post a question there and you will surely get some more specific answers as to what else might help you.

 

Good luck.

 

Dane