Hi!
This is my first post to this forum, and an embarrasing one too.
I recently bought a Space invaders upright that was partially working.. Monitor and gameboard seemed ok and was playable but sounds was missing. allso backlite and bezel lights was out. I opened the back and had a peak inside..even before i looked at the users manual.. i saw this PCB mounted on the left side having some pots on it (later found out to be the Power Circuit)...
And to the ebarrasing part: I started to turn on those pots causing the game to totally blank out..and now all that there is is a white dot at the center of the screen and no sign of life at all.. at first there was some white bars on the screen then all that was left was the little white dot. God I'm such idiot!!! I have only 'experience' with never Jamma cabinets and i'm used to pots just being for adjusting volume and horiz/vertical scroll and so on...
I consulted this page for som help: http://www.elektronforge.com/TestMdwPS.htm
And after measuring i found that even on the lowest settings the pots regulating +5 +12 and -5 volts all was 3-4 volts too high..
So it seems like it was to high allready but i obviously have done it much worse since nothing works anymore..
Have i killed it?? I wonder if i could have damaged the monitor? or just the Game boards.
have i burned the whole game?
Thankyou for your time. And appologize for being such a DUMBA**!
I have learned my lesson from now to NEVER touch anything unless i know what i'm doing..
And right now i feel i know nothing..
This is my first post to this forum, and an embarrasing one too.
I recently bought a Space invaders upright that was partially working.. Monitor and gameboard seemed ok and was playable but sounds was missing. allso backlite and bezel lights was out. I opened the back and had a peak inside..even before i looked at the users manual.. i saw this PCB mounted on the left side having some pots on it (later found out to be the Power Circuit)...
And to the ebarrasing part: I started to turn on those pots causing the game to totally blank out..and now all that there is is a white dot at the center of the screen and no sign of life at all.. at first there was some white bars on the screen then all that was left was the little white dot. God I'm such idiot!!! I have only 'experience' with never Jamma cabinets and i'm used to pots just being for adjusting volume and horiz/vertical scroll and so on...
I consulted this page for som help: http://www.elektronforge.com/TestMdwPS.htm
And after measuring i found that even on the lowest settings the pots regulating +5 +12 and -5 volts all was 3-4 volts too high..
So it seems like it was to high allready but i obviously have done it much worse since nothing works anymore..
Have i killed it?? I wonder if i could have damaged the monitor? or just the Game boards.
have i burned the whole game?
Thankyou for your time. And appologize for being such a DUMBA**!
I have learned my lesson from now to NEVER touch anything unless i know what i'm doing..
And right now i feel i know nothing..
