Dead right flippers bally fathom

[DRD]

I have been crossing off the jobs on my fathom. Tonight the right flippers died whilst i left the game on but was repairing the lock down bar

The left flipper gets about 44v at the cabinet switch and works fine

The right flippers are getting 0.3v at the cabinet switch

Does anyone know what might have happened ? I imagine î might of disturbed a wiring loom as I was earlier tracing a troublesome switch error which is now sorted. I have not touched the backbox

Thanks

 

[carl lawrence]

I have been crossing off the jobs on my fathom. Tonight the right flippers died whilst i left the game on but was repairing the lock down bar

The left flipper gets about 44v at the cabinet switch and works fine

The right flippers are getting 0.3v at the cabinet switch

Does anyone know what might have happened ? I imagine î might of disturbed a wiring loom as I was earlier tracing a troublesome switch error which is now sorted. I have not touched the backbox

Thanks

The heat in the backbox mite of made the wire to slightly move on the driverboard ,
just cheak the wires going into the conection block (idc ? that white block the wires go in)

 

[Arv]

Transistor fried?

 

[stevebm1]

could be a dodgy connector on the driver board,or dry joint on the header pins

 

[backbox]

The path for the +43V to the flipper switch ...

+43V lower right flipper coil
A3 J1 pin 9
A3 flipper enable relay
A3 J2 pin 1
Flipper Switch

 

[lukewells]

No transistors for the individual flippers, the returns are switched by the PDB relay.

Check the power at the flipper coil, the power feed loops from one flipper to the other. You have either lost power going to the coil, or connectivity between the flipper switch and the coil (via PDB relay)

 

[DRD]

Spot on @carl lawrence and @stevebm1. filthy header pins

I have focused entirely on the mechanical bits so far. But now I am almost done on those, so I will start thinking about the circuit boards

The circuit boards are far prom pretty. Two stern boards are up there as well

 

[stevebm1]

thought it might be I had a similar problem on my vector a while ago,turned out to be a dodgy connector

 

[DRD]

I removed the board today. Reseated all the pins, cleaned them with isopropyl alcohol and removed pitting with fine wet and dry

Game seemed to play ok, until the smoking episode ..... separate post