Virtua Fighter 2 Graphical issues

[josho50]

Hi All,

New here, I have been taking a look at my dads Virtua Fighter 2 cab that's been sitting for a while, there was an error message 'Power Supply Low Voltage, please increase to 5v', after playing with the voltage regulator on the PSU, I managed to get it to boot, however the graphics being displayed look corrupted;

I suspect this is due to low voltage still, however the voltage regulator cannot go any higher than what its set to, and any lower causes the error message to re appear, I've seen there are some kits that can convert an ATX power supply into what is needed for the board, however these projects are old and I don't think they're being made anymore, and I'm not sure what my luck would be on getting a replacement part,

If anyone has any advice that would be great,

Thanks,

 

[duncthepunk]

hi check that you are getting voltage to board . on sega you have 12v 5v and 3.3v?.but if the voltage is being sucked down by bad connections . it might read the correct voltage but it will drop by it gets to board. goodluck.

 

[josho50]

After leaving it running for about half an hour, most of these graphical issues disappeared, however after leaving the machine off for a couple of hours and coming back to it, the graphical glitches appear again, this makes me think that it might have something to do with a chip not being seated properly, again any advice would be welcome.

 

[duncthepunk]

hi .that sounds like the caps on the board are dry or dying . because of the age of the boards . you don't need to replace all . only the eletrolic caps . they might be surface mount . usally about 470uf 16volt . check are any of the caps dissorted bulging . hope that helps . remeber you can high rated caps but not lower values and take a photo before you remove anything for reference.