Grettings All,

Longtime reader, first time poster. During COVID I undertook the process of refreshing my Alien Star and Lost World (1978) machines. Alien Star went fine new lights rubbers, pop bumper and wax. When I dug into the Lost World I encountered a number of unfortunate hacks in the backbox, the game ran 90% fine as-was but it seems that someone over the years had made numerous adjustments to the AS-2518 Transformer board, before pictures below.

I decided that it would be a fun project to roll back these hacks, re-pin the molex and insert new fuses. When all said and done I checked my transformer board TPs and everything was within acceptable rage. However, now my solenoids will not power up and playfield lights (only scoring lights) will also not power up.

Any pointers or suggestions would be greatly appreciated. I am new to pinball wiring but capable. I have also attached a wiring diagram that I found useful in checkig my work on the burned out connectors.

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Thanks for the reply,
I actually noticed this as well. Today I took the extra step to replace the rectifier board with a replacement that came in the mail (picture below), with the replacement installed now I get power back to my playfield lights and the T1 9 pin connector matches up to the board.

Unfortunately my solenoid board still does not power up. I have checked some of the test points (I count seven) and power is getting to this board in acceptable voltages. I have not checked all the test points because what I find online only identified what voltage should be at 3 locations.

Usually when the machine powers up I can hear this board click on but now there is no such activity. Please also note that since I have owned this machine there has always been the jumper lead grounding on of the resistors (shown below).

What could be causing this? Where is my best place to start?

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Quench!
Thank you for all your help you are truly a wiz. Solenoids power up but new issue no power to my digit displays, is this possibly related to my red wire on the J1?

The F1 on SDB tests okay. I’ve noticed that I’m not picking up the 230vdc on the power supply board at TP2 or on the J3 5th pin. Does anyone have a schematic of what my E# solder points should be reading?

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Thanks everyone for your overwhelming support.
With the schematic I was able to verify that all E points are testing correctly. Issue traced back to a poorly connected fuse holder on the new board, now fixed. Now that the solenoids power up I have a new interesting issue.

When the three pop bumpers are triggered they all register points but they fire different solenoids. The top pop bumper activates the right saucer socket, the second pop bumper activates the bottom right bumper (above flipper) and the third pop bumper does not active any other solenoid but registers points.

It's also worth noting that other solenoids fire correctly when triggered.

Any ideas what would cause this?

Issue Solved,
If anyone else is following my saga Quench was able to diagnose this for another Bally under the following thread:

https://pinside.com/pinball/forum/topic/bally-powerplay-fires-the-wrong-solenoids