John's Arcade Forum - Classic Arcade and Pinball Collecting and Restoring Discussion Forum - RETRO MAME - Nintendo Vs Forum

Hi,

I've had a vs machine for some years now. About a year ago I left it on overnight and came downstairs the next day to only the marquee lit up. Upon plugging in, I only get the marquee with no video or sound. There is a hum from the monitor but no display. I really don't know where to start and am wondering if you guys may have any ideas.

Thanks for your help!
Brian

When i first read the title I though this had to do with the magazine at first! Have you just tried just checking all the connections. It sounds like your monitor is fine (maybe). Any other Rom's/Boards available to test?

Ha - yeah re-reading the title...oops.

Anyway, back to the topic. I did switch between two known working boards (Super Mario & Top Gun). Same result for both. I checked all the connections and they seem tight. And since the marquee and monitor (both plugged into the outlet in the cabinet) work, that says the transformer is good I think. Since that outlet is run straight from the transformer. Is there a fuse or anything to check within the power supply?

I am not personally familiar with the Vs but I can try to give you some general tips. There is usually a breaker or fuse in or near the power supply. I would start by taking a multimeter and just checking to see if the board has power (you can do this by checking the 5V->GND and 12V->GND off the edge connector). If no power, check for a fuse/breaker. If there is power you are going to be getting much deeper into the board.

@iankellogg, I'll do that, thanks. I highly doubt it's PCB related as I have three working boards and I tried two of them with the exact same result. So it sounds like it's in the power supply somewhere. I'll pull it out and have a look around.

Well I am saying check to make sure the harness has power. I highly suspect it is a power supply issue.