**Reel Slots** Gaming Machines > Universal Reel/Video Games

Universal Ultra Power Supply

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canm01:
Good timing on your post.  I have a Super Mag 7 and a Twin Crowns both with power supply issues.  One is completely dead and the other may be on its way out.  I really like and appreciate your info on building a new power supply.  I did some pricing on the NMP and found they range from $400-$500.  Could you tell me what yours ran and where you purchased it?   I may have to break down and do some troubleshooting on the original power supplies.  I know the dead one is truly dead as it does not work in either machine. Mike C.

Pitts256:
Hi Mike,

Thanks for the feedback.

I found mine on eBay, the timing was perfect. Two brand new NMP650's popped up on a lab supply store for $89.00 ea plus shipping. It wasn't exactly what I needed but with the capability to adjust each of the module voltages I was able to make it work. Still working well as I write this. The only drawback to the NMP650 is the cooling fan, it's on a VFD and on occasion can wind up to create an whining sound.

If you can find a supply that has 5V-12V-24V-30V you should be good to go. Check out the older Universal supplies...RED, GREEN or YELLOW dot. I see they have the same voltage outputs.

-Randy

canm01:
Randy...Wow...the timing had to be perfect.  I could live with that price.  The 400-500 range is a "tad" high for me.  I will try to be patient and search a little more.  I did try looking a little bit for something similar...but I could not find anything that was adjustable to get the 30V.  Thanks again for all the work you did on this!  Mike C.

canm01:
Randy,

I finally have the parts in and am attempting to assemble everything.  I have the Output Relay module completed.  Now attempting to finish wiring for the power supply.  On your directions, you mention GND1, GND2, and GND3. What are those in relation to?  Is one specifc to the 5v, one to the 12v and one to the 24v?  If so, which goes to which?  I can hardly wait to get this finished and have 2 working slots again!

Mike C.

Pitts256:
Hi Mike,

THE OLD PS:

From the original power supply the +5V1(VCC1), +5V2(VCC2), +12V, +24V and +30V grounds were separated. The +5V1(VCC1), +12V and +30V grounds were later tied together on the CPU board. See below how they ended up on the CPU board.

GND1
+5V1(VCC1)
+12V
+30V

GND2
+5V2(VCC2)

GND3
+24V



THE NEW PS:

As for the new power supply I jumpered the +5V, +12V and +30V grounds together on the supply terminal block. Also GND1 and GND2 are now tied together. I used GND1 for the GND2 as my power supply did not have an additional +5V output to use for +5V1(VCC2) & GND2 pair.

The +24V & GND3 were kept separate.

Let me know if you need more info.

-Randy

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