Hey everyone, Back again for help.... Much appreciate everyone's input, direction and patience.

So I have a system 80 Panthera, I have replaced the Main Board with a ni-wumph(spring 2014)(it was easiest, original board crashed hard), after replacement the machine was working pretty much flawlessly for the better part of 1 year, Then issues started to arise again.

So here is the situation,

The free game "Knocker" started to only work intermittently at first, and now only works once in a blue moon, not that it bothers me that much, but stating it for the most info to you all.

Then my lane and target light stopped lighting up(yel/grn/wht/blu) I noticed it once during game play, turned off the machine pretty much right away, they worked again for a few more games and then stopped completely, they still count points properly, and if all 4 are completed the special lights up as it is supposed to. (I can illuminate lights by grounding them)

and within the last few weeks, the game will just stop scoring mid game, sometimes everything goes dead(with the exception of the playfield lights) and it says game over, other times(more often than "game over") it will just stop scoring, and flippers continue to work, with both of these situations, I just power off the machine for a minute or so and restart it, then it is hit and miss if it will act up again.

So questions would be this...

Which problem to address first??? could all 3 issues be related, or do I have 3 separate issues???

*** I have re-installed the programming to the Ni-wumpf, no change to any of the above concerns.

Not sure what else I can say, with the exception that the ground mods have all been done as described, I have tested the power supply, verified the 5v, 8v, 42v, 60v are present, 5.00 v is set right on, the 8v, 42v, and 60 volt are a bit higher, but have always been.

Thanks again for any help and tips to solving these concerns.

Jason

No the machine is not going into tilt mode. Yes all slam mods have been done. But thanks

I have went through the fuses, checked voltages on both sides, no voltage drop(s) on any.

I will recheck all my pin fits and connectors, pretty sure not the problem as I have checked them in the past and all was good.

I will update with results,

thanks

So, finally got to the game, and time to dig into it, with all my testing, and knowledge about the game, I have to come to the conclusion that the driver board(chips) for light circuit(s) MUST HAVE FAILED! So unless anyone can lead me on another route, I will be looking into purchasing a driver board now.

Thanks for all the input.

FOLLOW UP. after multiple attempts to figure out the issue. It was a connection issue. I believe shacklesrevenge hit it on the head... I have it up and working awesome again. Thanks to all that had input on the issue. Forever grateful. ?