Thanks- I'd read online that you shouldn't run system 80b boards without the other components connected, so I was hesitant to do that here. But I will try as it looks like I have nothing to lose now 
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I've never heard something like thisThanks- I'd read online that you shouldn't run system 80b boards without the other components connected, so I was hesitant to do that here. But I will try as it looks like I have nothing to lose now![]()
I'm still wondering about what happened originally, how did you end up with smoke and "electrical issues" removing a battery? What do you mean by electrical issues?Not sure if this pin requires the batt to boot, but my game now only powers up to GI.
For those who weren't following my batt removal process, the machine was turned off when I started removing the battery from the pcb. All connectors were off of the board except for the one going to the digital display. My thought had been that I'd lay it down on the pin glass, desolder, remove component, and be on my way. It didn't go like that.. Touching the pins with the desoldering tool caused smoke and electrical issues. I've never had that happen in my time working on games. The game had not been played in about 48 hours, but there must still have been a charge in the battery.
I'm trying to check fuses now, but this is exactly why I was hoping not to have to muck with the battery![]()
I will expand on this more later today, thx for help!!I'm still wondering about what happened originally, how did you end up with smoke and "electrical issues" removing a battery? What do you mean by electrical issues?
To the OP. Check continuity between the tip of the desoldering tool (any of the metal will do) and each prong on the power plug. Continuity to either prong would be bad. Doubly so if the plug is not polarized.The only thing I can think of is the soldering iron leaked 120V through the tip into the board.
I'm confused.... Why wouldn't you completely disconnect the board before working on it?Steps I took:
1.Disconnected all connectors from mpu but connector to display (at bottom of mpu)
I know that in retrospect that I chose poorly, but going on the fact that everything plastic breaks, I wanted to lessen damage to anything that I really didn't need to mess with. I really couldn't think of how there'd be potential for electrical damage in doing what I was doing, being the game was off and there was no power connection to the mpu. I can't ever remember having this outcome working on any other game that I haveI'm confused.... Why wouldn't you completely disconnect the board before working on it?