I have just installed an aftermarket Bally/Stern rectifier board in may big Game AS-2518
the DC voltages are about half of what they should be, and I cannot work out why?
The AC voltages are OK

F1-5.4 VDC I'm getting 2.76
F2-190 VDC I'm getting 104.6
F3-11.9 VDC I'm getting 5.7
F4- 43 VDC I'm getting 21.9
F5- 7.3 VAC I'm at 7.05
F6- 240 VAC I'm at 235

seems ok out of the Transformer
Lugs
2-6 not sure what it should be but i have 50v
17-18 -7.3v I've got 7.1
13-14 -7.8v I've got 8.1
15-16 -12v I've got 12.8
8-1 -173 I've got 178.8

hopefully it is something simple?

It is a project game, has not worked since being in my possesion.
the transformer jumpers look good to me.

-106

i get nothing 0.01

20210307_112720[1] (resized).jpg

i get theses readings
B1 - 2.9
B2 - 7.8
B3 - 21.8

Yes continuity is good for all wires form the transformer. I have checked that they are all connected to the rectifier board as per the manual, 18 to E8, 17 to E7 etc

with only J2 connected the readings are the same as the first post except for F3 is 8.5v (was 5.7)

AC line voltage is 230
no difference with just pins 6 & 7 on J2

E3 - E4 = 49VAC 50
E7 - E8 = 7.3VAC 7
E9 - E10 = 7.8VAC 8
E11 - E12 = 12VAC 12.6
E5 - E6 = 173VAC 177

i put the original rectifier board back in and the results are the same, still the DC voltage is about half what it should be.

put this down to my dumbness, for checking the voltages at the fuses - voltages at the test points are pretty close to normal ( i would of thought they should test the same at the fuse?)
unplugged the soundboard and the game starts up