Mij verhaal is in het engels gezien bovengenoemde... reacties in NL lijkt mij het handigst

Resume: Ik kocht een Champion pub, deed het prima bij de verkoper, thuis begon de ellende..
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Hi
Just bought a TCP and in the process of buying played a quick game.. no abnormalities.
At home (after reconnecting all the wires, due to shipping) started the machine and played a game. It had no problems at all!
But in the [first] game a ball got into the speed bag area, and WHOOP all of a sudden the machine restarted.
Searched for known trouble issues. Yes it could be one of the high voltage coils making a short to the low voltage switch line! Damn...
So, I removed the speedbag platform and it looked like it could be the problem indeed -> there was a loose winding of a coil which could easily make connection to the iron assy. Secondly, the speedbagswitch had lost of most of it's foam and the nut could easily get in tough with the leave on the back of the switch.
- Most obvious it would have blown at least the U20 [ULN2803A] and probably the security chip, which I read on an article.
FIRST I took care of the short for now in putting isolation tape on the spots where wire could contact the iron + isolated the back leaf of the speedbagswitch.
SECOND I could get hold on the U20 chip quickly so replaced that to see if it solved the problem.
RESULT: ground error removed, but got replace by several other errors:
1. Close coindoor high voltage line out of order [not exact those words but you'll understand]
2. Boxer malfunction
3. Jump rope malfunction
In addition to error 1: Strangly it does seem to have the 50V line active since the jumprope keeps going and it keeps spitting balls into the shooter lane, even with the door open!
Oke, so the Q10 needs to be replaced to... which I had to order... wait... wait... it arrived. Swapped the chip -> fingers crossed + start machine = no result! Same three errors remained in tact!
SWITCH LEVEL:
If in test mode [switch level] you see the switch matrix and without anything pushed there are several 'points' lit up. It seem to be of the opto's. And there flashing a bit. I have no clue!
I'm not educated in pinball electronic problem solving so I turn to you my dear Pinside friends
I hope you could help me out here and provide a very understandable explanation.
Thank you upfront!
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Hier een video van hoe de machine reageert in switch level test. Lijkt mij niet geheel in orde, maar heb geen flauw idee wat er aan de hand kan zijn. Verder is het goed om te weten dat in de manual de 2x vier switches niet standaard 'closed' horen te zijn. De 'Typically Closed' switches zijn kolom 3 + 4 (m.u.v. nr 37) en nr 64 (rope cam)
Dit ter info.
Iemand advies?