Quoted from beelzeboob:Had the flippers and lights go out again today, but the upper flippers went too. Is this normal when node 8 fails? i.e.: are ALL the flippers on node 8 since they don't work independently?
Yes, the upper flippers are connected to node 8 so if the board is having issues they can turn off too. You're probably the first person who happened to notice the upper flippers go out when the lights and the lower flippers went out as well. It's probably happened the whole time since we've seen this issue. in the 1.21 readme, for the firmware update for the boards they talk about "improved handling of overcurrent conditions". Overcurrent on circuit boards is a bad thing. It means they are frying parts on the board. So when we are seeing the lower GI and flippers go out they are probably shutting off the current to the whole board after detecting an overcurrent condition to stop parts from frying on the board.
On the earlier code (1.01) they were definitely frying circuit components, because eventually you would just lose power for all coils associated with that board permanently and the board needed to be replaced. (Had that happen to me more than once).
I studied the hardware on the two board revisions (the old and new). Everything seems to be the same except they bridged a pin on two of the transistors together with a wire on the underside of the board. It works out to be the transistors for the right slingshot and right lower flipper on node board 8.
So, it seems to me they still have board issues for the Spike 8 48V driver node board that GOT LE/Prem node 8 uncovers. Why this one machine and board? Because it has two slingshots, two sets of flippers, and the lord of light target bank all tied to it. And a lot of those coils can be firing at once. KISS and WWE probably did not have as many coils firing at once on their 8 48V driver node boards (just like node board 11 on GOT LE/Prem which is also a 8 48V driver node board).
And nope, have not heard back from Chas yet...