Have you gone into the menu screen and tried adjusting the volume there?
Ummm yep, late in the video I tried that.
it looks like the battery's dead. so in either case, the default volume should still kick in, and be loud enough to hear the BONG! sound on power up.
I was just wondering if the dedicated MK cab had the speaker wiring done differently or something, but I would think it wouldn't make a difference, the speaker output should come out of the JAMMA harness no matter what.
I just thought I read one time that the volume pot like interrupts between the JAMMA edge and the speakers in dedicated MK... but what about the volume pot connector on the sound board? that's the part that doesn't make sense.
Yes, I found out I have a dead battery. I have a replacement, just havent installed it yet. But you are right, that shouldnt affect the sound, as far as I can tell it only save your coin and game options, high scores, winning streaks ect.
The volume pot has 2 wires and goes directly into a connector on the main MK PCB. Speaker wires are going directly to the JAMMA Harness. I can try unplugging it, but like I mentioned, shouldnt have anything to do with it.
Turn the ribbon cable connector on the sound board around so that the cable leads away from the board rather than into it.
But only switch the connector on the sound board. The main pcb looked fine. That's how mine is in my cab.
I can try swapping both ends, but as far as I can tell it wont make a difference. If I only swap one end, It wont be connected right. Theres a red stripe on the ribbon cable, indicating that goes to pin 1 on each PCB. Unless someone can confirm otherwise, I dont want to chance any more damage.
I don't see what the volume pot would have to do with the Jamma harness. The speakers are connected through the Jamma harness and the volume pot only controls the volume of the sound coming from the PCB going into the Jamma harness. In other words the volume pot isn't wired into the Jamma harness directly in any way so there shouldn't be any interference from it.
Exactly. Like I mentioned, the pots only purpose is to tell the MK PCB how loud I want it. It's not an issue with MKII since the pot isnt in use with MKII and volume is controlled VIA service menu.
Can anyone at least rule out my main PCB as a potential problem? I am really leaning towards the sound PCB. Maybe someone can test out my Sound PCB or even the whole boardset? The only other possible thig I can think of is I think I remember seeing a diode (or cap, maybe) or two in the speakers, Maybe MKII dosent use them?
I guess I should just quit being so damn cheap, suck it up and buy a whole other boardset with my fingers crossed, but I fear this could turn into a money pit if I take too many chances.