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WMS 400 Dotmation Power Supply Issue

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tollguy316:
I'd say it's definitely the lower power supply. Perhaps try opening the power distribution box ( lower power supply is inside and check the fuse in it). With only 2 LEDs lit, I think that is definitely the issue. If you opt to not do the ATX route ( not a fan of it personally); I have lower power supplies available. Good luck and keep us posted. Bill
 

zach117100:
Well, so far so good. It seems this solution was able to restore my main PS issue. Thank you a bunch for the advice on this! MBU reports all voltages. Only thing I dont like is I have to turn on/off each power supply independent of each other, however I dont see myself worrying about this later on when this unit is left on and running for use.  :thank_you:

My next goal is to implement the dotmation PS modification. I will reply back here in the following weeks with the results of that. Hoping my luck with this machine fix continues like this.

In the mean time, I'm luckily a local to AZ SLOTS so I plan to take a trip down there this week and possibly purchase an IGT machine from them. I'm really interested in acquiring a double/triple diamond machine :yes:

Bmwsyc:
If you plug in the new ATX power supply to the receptacles at the back of the Williams power supply, it will be switched with the main switch. The receptacle on the front is unstitched.

zach117100:
Alright, I have an update for you guys.

First off, thank you a whole bunch for the reference to the ATX mod. It saved this machine so far!

When I booted it up first time with both bottom and top power supplies replaced, and no coin hopper installed, it turned on, cycled the reels, and then popped up with 800+ credits. It let me place bets and spin, and win. It was awesome! :propeller: Then I pressed the cashout button... :duh: I heard some clicks, and then a 'HprJ' code had appeared. This was odd since it wasn't even installed.

I tried installing the coin hopper and then booting the machine again, this time it showed 'HprE'. I added some quarters, since its a .25 machine, and booted the machine again, but it presented the same error code, 'HprE'.

I'm digging in the manual now to find out what all the parameters mean in the menu. I want to try and make it a coinless machine until I can fix the hopper or replace it.
I have some ram clear chips for this machine arriving soon so I intend to do that as soon as I get them.

In the mean time, I will link a video of this machine as it first worked again and then now as this HprE issue persists.

Thank you again!

Sunrise Side:
'hopper empty'. coins are not being dispensed. Put some quarters in hopper, hold brake down and turn pinwheel by hand to see why coins are not dispensing.

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