I've had this Joust for a number of years and the sound worked well
when I originally got it. I don't know alot about arcade games and
therefore, I've never even opened the back of my Joust until now.
The sound doesn't work; at all. I pressed the diagnostic button and
no sound. I checked both sets of fuses and they are in good shape.
Using a multimeter, I checked the voltages per the manual (downloaded
from http://www.arcade-museum.com/manuals-videogames/J/Joust.pdf) and
I found that I'm getting -5V where the -12V should be... I
disconnected the power connector to the sound board and checked the
voltage at the main power supply; -5V there too. The +12V and +5V
power to the sound board is good.
I looked closely at the main power supply and see that only -5, +5,
and +12V are available. NOW, the sound has worked since I got it
(someone else installed the power supply before me); where else should
I look? Can the board work with -5V instead of -12V?
when I originally got it. I don't know alot about arcade games and
therefore, I've never even opened the back of my Joust until now.
The sound doesn't work; at all. I pressed the diagnostic button and
no sound. I checked both sets of fuses and they are in good shape.
Using a multimeter, I checked the voltages per the manual (downloaded
from http://www.arcade-museum.com/manuals-videogames/J/Joust.pdf) and
I found that I'm getting -5V where the -12V should be... I
disconnected the power connector to the sound board and checked the
voltage at the main power supply; -5V there too. The +12V and +5V
power to the sound board is good.
I looked closely at the main power supply and see that only -5, +5,
and +12V are available. NOW, the sound has worked since I got it
(someone else installed the power supply before me); where else should
I look? Can the board work with -5V instead of -12V?
