Superully
Active member
having restored my gauntlet (which was working fine before i started the resto), i put all the stuff back into the cabinet. i didn't connect monitor and pcbs to the power supply board though, just the a/c power cord. measured the voltages, everything turned out fine. connected both the pcbs and the monitor, turned the game on - BOOM! the F1 fuse directly after the filter on the power supply board AND the fuse inside the switcher were blown.
since i couldn't find out what type of fuse (fast or slowblow) was used inside the switcher, i ordered both types. here's what i did when they arrived:
- i installed a fastblow fuse in the switcher first and replaced the blown one on the power supply board. turned on the game - BOOM! both the fuse directly behind the filter on the power supply board AND the fastblow fuse in the switcher blew!
- i replaced the fuse on the power supply board and removed the blown fuse from the switcher, turned on the game, steady output of around 120 volts to both the monitor and the switcher!
- i installed a slowblow fuse in the switcher next. turned on the game - BOOM! only the fuse directly behind the filter on the power supply board blew, slowblow fuse in the switcher is still ok!
summary: with all the cables removed, power supply WITHOUT a fuse in the switcher is working fine, as soon as i install any type of fuse in the switcher, the fuse on the power supply boards blows!
this sounds like the switcher is having some issues, but i'm pretty sure all the voltages BEFORE the first blowout were fine when all the connectors were removed. now i can't even reach that status anymore. all it does is blowing fuses ...
i need some input, guys! thx
since i couldn't find out what type of fuse (fast or slowblow) was used inside the switcher, i ordered both types. here's what i did when they arrived:
- i installed a fastblow fuse in the switcher first and replaced the blown one on the power supply board. turned on the game - BOOM! both the fuse directly behind the filter on the power supply board AND the fastblow fuse in the switcher blew!
- i replaced the fuse on the power supply board and removed the blown fuse from the switcher, turned on the game, steady output of around 120 volts to both the monitor and the switcher!
- i installed a slowblow fuse in the switcher next. turned on the game - BOOM! only the fuse directly behind the filter on the power supply board blew, slowblow fuse in the switcher is still ok!
summary: with all the cables removed, power supply WITHOUT a fuse in the switcher is working fine, as soon as i install any type of fuse in the switcher, the fuse on the power supply boards blows!
this sounds like the switcher is having some issues, but i'm pretty sure all the voltages BEFORE the first blowout were fine when all the connectors were removed. now i can't even reach that status anymore. all it does is blowing fuses ...
i need some input, guys! thx