Universal Slot Machine Questions

[UNIMAN]

Again, make sure the INCERT COIN light is flashing when testing for voltage to the comparitor. They go hand in hand.

If I remember correctly the power is always there, the MPU connects and disconnects the ground.

[Mpruitt]

Success!  We did it, or I should say you did it.  The machine is now running.  I swapped the wires as you suggested.  I even got the three pin connector back together.  Once I plugged in the power supply to the coin comparitor it lit up immediately.  I didn't have to replace any fuses.  The machine is accepting coins and playing.  If I may, I would like to ask a few final questions.

1. Is there a way to make the machine continuous play?
2. Can you tell me how to find the fuse panel in case a fuse blows down the road? 
3. Is there a way to oil or lubricate the reels?  I noticed the reels are noisy when they turn.

Thank you, thank you, thank you for your continued help and support through this process.  It was worth the effort to see the machine actually play.  This is going to be fun to play.  Thanks again.

[Pitts256]

Fantastic! 

As for your follow-up questions:

1. Is there a way to make the machine continuous play?
Like an AUTO play, nope. You have the option to insert coins and a winning combination is immediately paid-out from the hopper or it goes to credit. When the "Collect" or "Cashout" button is lit wins will go to credit. Make sure you have plenty of quarters or tokens on hand otherwise you'll spend allot of time refilling the coin hopper.

2. Can you tell me how to find the fuse panel in case a fuse blows down the road?
The fuses are located on the power supply, to the left of Reel #1, just below the power switch (see photo).
 
3. Is there a way to oil or lubricate the reels?  I noticed the reels are noisy when they turn.
The reel assemblies do not require any lubrication. They're noisy by nature (stepper motors), the reel strip plastic cage gets loose on the shaft or the motor bearings wear over time, the plastic cages amplify it. If the noise becomes overwhelming then the motor or the entire reel assembly needs to be swapped out.  Some fixes have been posted using rubber bands, epoxy, shims etc. About the only reel assembly maintenance is cleaning the dust off the photo eyes with some compressed air or a Q-Tip.

[UNIMAN]

Glad to hear it is running! Good eye Pitt!!

[UNIMAN]

Continuous play.

Well.........I once used an 8-pin delay timer to continuosly run my Uni Ultra until credits ran out. Powered the timer from lighting 110v and wired a set of dry contacts on the timer in parallel to Max Bet button wiring. Set it for 30 seconds. Had a switch on the110v to turn timer off/on.
Credits were easy to get in the Ultra by setting denom to pennies and incerting an old $5 bill to get 500 credits.

With an old Uni you would have to build up credits by play. 2500 would be the max.

[Mpruitt]

Thanks Pitts256 and Uniman.  I truly appreciate all of your help.  I couldn't have done it without your help.  I will be content with inserting coins and building up credits. 

This has been a fun experience.  I am now on the lookout for another slot machine as I have other family members that want one. 

[Mpruitt]

I have been playing the game for about a week.  I got a few small payouts over the last week.  There have been no large jackpots.  Is there a way to adjust the payout frequency so that the payouts are more frequent? 

[Pitts256]

Unfortunately the payout tables are programmed into a game eprom chip plugged into the CPU board specifically for your machine and the overall percentage in the chip cannot be changed. Sometimes the entire eprom can be changed to one with a better payout (if it exist), Uniman may have more information on the chips.

The payout percentage is based on a million plays over a period of time and it's cyclic. So you could play for days without any decent payouts then suddenly it hits a jackpot followed by a few more good hits. Let's hope you're in the low payout cycle and not stuck with a low percentage pay-table eprom, patience prevails.   

[UNIMAN]

If you press the green test button 9 times, numbers will be displayed on WIN meter. Post those numbers and I can tell you the calculated payback for that gamechip.

Believe it is five nunbers each starting with 9, the test number.

Something like;
98903
90034
98601
90002
91200