Williams Reel Slot I/O problem?

[Ohio Chad]

Okay folks, these stinkin' Williams machines are beginning to get the best of me...  I have multiple WMS 400 Slots (i.e. High Speed, Lucky Ladies, American 7's), every one of them has a Reel error, there is no power to the reels.  I have checked everything but the I/O boards (they are hard to find and $$$).  Is that obviously my problem and it is just coincidence that my 5 machines have the same dilemmas?  Any suggestions would be much appreciated.  

So on my I/O board, my 18 v is off, I have a new power supply...Is it possible that it is bad?  All of my Williams 400 machines are giving me the same problem.

Cursed 18 Volts!!!
Ordered 6 3503 Bridge Rectifiers...I tested 2 and they both were bad, maybe I am to lazy to test the other 4, I had to find out the hard way that a "Computer Products" 12v 5v P.S. that I have used as a testing devices has been shorting my 18v supply on Williams...Here is an opportunity to call me a Dumb %$&*

[stayouttadabunker]

Try swapping the I/O boards between machines?

[KirkLasVegas]

Okay folks, these stinkin' Williams machines are beginning to get the best of me...  I have multiple WMS 400 Slots (i.e. High Speed, Lucky Ladies, American 7's), every one of them has a Reel error, there is no power to the reels.  I have checked everything but the I/O boards (they are hard to find and $$$).  Is that obviously my problem and it is just coincidence that my 5 machines have the same dilemmas?  Any suggestions would be much appreciated. 

I have a fully working 40S5 Jackpot Limbo I'm tempted to part out....
Good display
Good MPU
Good I/O
Good Power Supplies
FUGLY case
Missing pull handle
GOLD colored trim......

Kirk

[Ohio Chad]

Bridge Rectifier was the issue...