Hi, new to the forum and have found a lot of nice information here But I'll need some help on this game...long story short.
Bought it non functional, when plugged in it did blow fuses, changed the 4 diods next to F1 on the rectifier board, after that got some low voltage on the 43v line so changed the both bridges as well...now voltages was accaptable, changed the C23 and C26 on the Solenoid board as well.

So on power on with the old MPU led was stucked, but as it looked a bit corroded I bought a new board from Pindoras Box, put ROM on it and fired it up...still stucked on the led...I've checked the voltage on rectifier and it's ok (tp1 7.36vdc, tp2 232vdc, tp3 13.2vdc, tp4 6.6vac, tp5 42.4vdc), on the solenoid, (tp1 5.12vdc, tp3 5.10vdc, tp5 12.8vdc), and on the MPU it's (tp1 2.29vdc, tp2 12.8vdc, tp3 14.4vdc, tp5 5.10vdc).
So the voltage on tp1 and tp3 is low, but when checked closer I have 42.4vdc into the card and on the left side on the resistor R113 there is 42.4Vdc but on the right side it's 14.4vdc, and same for the tp1, left side on the resistor R131 it's 5.10vdc and on the right it's down to 2.29vdc.

Anyone have a clue?

Thanks for looking/ Bosse

2019-01-27 22.54.27 (resized).jpg

IMG_20190127_225337 (resized).jpg

Checked but no corrosion in the connectors.
But I found the fault, or faults, did some measuring with an logic analyser and found that the voltage on Tp3 was actually good, and the Tp1 has a design fault on this card...for some reason they put a resistor on the wrong place (R141) and that pulls the voltage down from 5v to 2.29v. So that fooled me a bit
Next thing was that the card will not boot up if the voltage is slightly more than 5v (I had 5.3v)...so put a diode in to pull the voltage down a bit, and all fired up good.