So I’m working through a basket case of a Phantom of the Opera and I’m down to 2 things; sound/music isn’t working right and I have no high voltage to my flippers.

Did a complete flipper rebuilt, all new everything including new (090-5020-30) coils with pre-installed diodes. Everything moves free and smoothly when moved manually.

The flippers work in switch test and in game but flip but very slow and weak.

The LEDs on the flipper board do not lite when the flipper cabinet switches are pressed.

Measured voltage coming from PPB and get 74.5v. Fuses are good.

Voltage at the coil when cabinet switches bare pressed is ~9v then drops to around 6

Some other work done:

-Installed Rebuilt MPU (replaced corroded one)
-Recapped and changed fuse holders on the PSU, checked fuse values, Reflowed headers
-changed our tip36c and 220ohm resistor Reflowed heads and change fuse clips where necessary.

-Reflowed header pins on flipper board and just changed out the tip36c, tip32c and both transistor at SR1&SR2 with MCR12NG with new thermal paste. No change.

-piggybacked a couple of CD4093BE on both ICs. No change.

I may be overthinking this....Any input on this would be much appreciated!

Monkey’d around with the cabinet wiring. Nothing.

Tossed in my rottendog flipper board from another game and they’re flipping fine!

Safe to say it’s the board itself

Yeah that’d be easier but I took the easy route on other parts of this game and threw money at it to avoid the board headaches.

I wouldn’t mind getting this board going again if possible

fuses check out and any flakey clips have been replaced.

Also cabinet switches are good. I adjusted the leaf to the micro switch and have also put in new push buttons/springs.

Also to note. It seems like the voltage that I do get is intermittent. One time the left flipper will lift no problem (low power) and the right will struggle. Holds if I lift it.

This was reversed earlier. I poked around at various spots on n the board and have found the 74.6v is present. 5v(4.89) as well.

But the LED indicators will not lite at all when the switch is pressed. I might just go ahead and socket and replace both ICs. Seems like it’s not getting any signal to throw the high voltage at the coils.

There are two 4093B on the flipper board itself.

Yeah no EOS on this game. Which threw me off along with the micro switches for the flipper buttons. First game I’ve owned with this setup.

And I’ll grab some pictures of the board in a bit

Front of the board doesn’t look like it took any damage from falling playfields. This doesn’t have rails anyway.

Some pads lifted so the back isn’t as pretty as it was from factory

I buzzed pretty much everything and doubled checked my work on whatever I replaced.

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Well I went ahead and replaced the 3904 and 3906 transistors and socketed and replaced the 4093 IC and managed to get the left flipper flipping hard again. The left one has no life.

The MPSA42 I ordered didn’t come with my parcel as they’re back ordered until July (I didn’t notice that when I made the order) so I contacted digikey support and they’re sending out an equivalent when they’re shipping department opens again... on Monday

So I guess that’s something.

Update: I’m flipping’ again!

My left flipper being completely dead was due to me putting a new transistor (3904 @Q5) in the wrong direction.

Moral of the story, if you’re not getting high power to the flippers and the board LEDs don’t light when the cabinet switches are pressed try replacing the following.

Transistors 3904 & 3906 and ICs 4093B

Haha sure Mike, I’ll email you some money here in a bit.

This is the IC I used

https://www.digikey.ca/en/products/detail/texas-instruments/CD4093BE/67329

I can’t say that this will 100% fix your problem as I kind of just shotgunned it as there isn’t that much going on on that board. I mainly focused on where +5v and where the flipper switches come in and return on CN1.

I knew replacing all the TIP transistors was probably not going to fix things but I did it anyway. It was maybe $25-30 for everything, that’s including the diodes and some resistors