Author Topic: IGT S plus reels do not spin when powering up (Read 3535 times)

jvela58 · « **on:** January 18, 2021, 09:41:47 PM »

Hello all,
I have an IGT S plus Red White and Blue double sevens slot. When I turn it on the reels do not move. I have replaced the 8A fuse. It had a 6A that was blown. I could not find an 8A so I put in a 7.5A. It was blown both times that I powered it up. Any suggestions? Here are some pics of the inside. I noticed that there were two AC plugs in the inside and an orange stain on the side.

Stayouttadabunker · « **Reply #1 on:** January 18, 2021, 11:11:44 PM »

In the photo below, you will see two green arrows I drew pointing at the two orange wires on the motherboard power connector.
That is NOT an OEM Molex connector housing....I believe that red one is made by Tyco.
In that Tyco connector, the wires get pushed in the top end of the pins....they work by cutting into the vinyl protective wire cover contacting into the inside bare copper wires.
With the power OFF, take a small flat screwdriver and press the two orange wires a little bit further into the the top of those pin contacts.
What we're talking about is only about 1mm-2mm deeper...
In the photo, the orange wires do not appear to be fully depressed into there...the pins might be only contacting part of the inside copper strands, if any.

After you've pressed in the wires a bit more, turn ON the power switch on the machine.
If you don't feel any stiffness of the reel baskets or they do not turn, then I'd order an OEM power harness from a member named KEN. who has some for sale....see link...>>>http://newlifegames.com/nlg/index.php?topic=29640.0

No matter what, that power harness needs replacing...the LAST thing you want is any of those live wires popping out and grounding out on metal inside a metal cabinet!

I'm suspecting some other mod someone has done since we've spotted this one from your very good photos.
Oh ...when replacing fuses, use quick blow fuses....you might need to get a few at the hardware store until we find the short that's blowing your fuses.

I'd like to see photos of the top box candle wiring too...a short up there from someone messing with wiring an cause problems as well as the center light on the reel glass display.

I haven't even begun because there may something shorting out inside the power supply box too.
The cover comes off pretty easy though....just undo the single Philips screw on the left side of the box near center....undo the wall plug first before going in there.
Take a good clear photo of the guts in there...we'll be able to tell you if anything is shorted.

Oh the orange goo sliding down from under the slot handle mech? That's some junky rubber stop IGT put in there that likes to melt.
There's a topic on that from just a couple of weeks ago....it's no biggie...unless something is shorted up in there?

That plug on top of the power supply with a black, green and white wires?
The one in the far right hand corner.
Someone made a makeshift 115VAC service outlet...remove that plug from there with the plug out of the wall outlet....it's NOT needed and it's possible there's a short there too.

Click on photo below to enlarge if needed...>>>

jvela58 · « **Reply #2 on:** January 19, 2021, 04:58:05 AM »

Thanks! I will check those issues out and let you know. I contacted Ken to order the OEM power harness.
Appreciate all your help!
John

jvela58 · « **Reply #3 on:** January 19, 2021, 05:53:53 PM »

I ordered a new harness. The 8A fuse kept blowing when I turned on the machine.
I checked all the wiring for any shorts and they all seem ok. Here are some pictures of the power supply and candle wiring.

Stayouttadabunker · « **Reply #4 on:** January 19, 2021, 06:26:54 PM »

okay...the middle fuse on the PS box is the 8A fuse.

That's for a lot of things but when it blows, it's indicative of the reel glass display LED lights, the candle light, and the reels will feel loose.
There's more things it runs power to, but the main suspect could be a short along those lines.

I'm wondering...can you take out the topbox glass and unplug the candle harness connector up in there?
It will be a small square-ish looking connector that has 4-pins....red, yellow and black. in your last photo.If the candle is shorted, you need to take it apart and see what's wrong inside.A shorted candle can blow the 8A fuse.Once disconnected, throw in a new 8A fuse and turn on the power.Keep fingers crossed and hope the fuse doesn't blow...lol
The candle is one of the few things that wont hurt if you unplug or plug it in "live", but I don't want you to get a shock...lol
If the candle is working....leave it alone...something else is shorted.

If the candle is okay, then disconnect the reel glass display plugs.
They are on the bottom of the board at two different points.
There's a tiny lever on the middle of the connector housing that needs to be depressed to release a plastic latch as you wiggle off the housing body.
Try not to pull on the wires...you will just have more problems....grasp only the plastic body.

Once you take them off, turn on the power with a new 8A fuse.
What we're doing here is trying to see if the display board has a short.
We want to systematically disconnect various components and turn on the power afterwards to see if the fuse blows.
That's why I asked you to get some fuses...lol

It's not good to plug in electrical components with the power switch ON because then you're risking blowing out other stuff and never finding the short in the first place.
This way, all we do is blow a few fuses...no big deal.

I couldn't find anything wrong with your power supply and I'm glad you removed that service outlet.
I was hoping maybe you'd find a loose coin or two in there besides dust.

Look on the motherboard circuit board that's on the floor...the ablong one the main MPU slides down into.
See if there's any metal laying around shorting out something.
Also, with the power OFF, pull out the MPU and check thoroughly for anything burnt...maybe traces melted...check the motherboard on the floor too really good.

Do you have a multimeter?

jvela58 · « **Reply #5 on:** January 19, 2021, 08:59:26 PM »

I disconnected the candle. The fuse still blew. Where are the reel glass display plugs located? I also checked the pc board below the Main board and it looked ok. I also took out the main board. There was only one component that seemed burnt. I will post a pic. When I turn on the machine I hear a humm. it's not to loud.

Tilt · « **Reply #6 on:** January 19, 2021, 10:16:40 PM »

That's the battery and it's starting to leak. You'll need to replace it with a new one and clean up any corrosion on the MPU board. Also inspect the circuit traces and components near it to make sure nothing else has been damaged.

That battery is not the cause of your fuse blowing though. I'd remove the power connector from the motherboard (the one you are going to replace) and turn it on. If the fuse doesn't blow you'll know the problem isn't in the power supply itself. If it doesn't I'd remove the motherboard and check for loose coins under it and wait for the new power cable to arrive before going any further. I've never seen one like that before and it's hard to say if it's wired correctly or not.

Jim · « **Reply #7 on:** January 21, 2021, 09:14:22 AM »

remove the cpu board and turn it on, if the fuse doesn't blow, then the problem is on your cpu board, usuallt the diode for +VB.

see what happens!

Jim

Stayouttadabunker · « **Reply #8 on:** January 21, 2021, 09:27:03 AM »

Amazing the help you get when you post a few pictures eh? Lol

jvela58 · « **Reply #9 on:** January 21, 2021, 10:43:07 PM »

Thanks for your help everyone!
I have removed the motherboard and checked, but there were no coins or metal pieces under it. I will slide out the cpu board and check to see if the fuse blows. I have to get more fuses. I couldn't find any 8A so I'm using 7.5A

One other thing, where are the reel glass display plugs located?

jvela58 · « **Reply #10 on:** January 22, 2021, 02:54:06 PM »

I have removed each cable from the motherboard and its the cpu that's blowing the fuse. I checked the battery and there is 0 volts on it.
So that's where I stand right now. Suggestions? Where is the +VB?
Thanks!

jay · « **Reply #11 on:** January 22, 2021, 03:48:39 PM »

The motherboard (small fixed board) that the MPU (board in the removeable tray) has a 4 wire molex down the middle. This provides power to the reels and denomination light.

If you have the MPU plugged in and the 4 wire molex removed do you still blow the fuse ?

jvela58 · « **Reply #12 on:** January 22, 2021, 08:39:56 PM »

I did a test on all the cables going to the mother board. I removed the cpu before doing this. The cable that is causing the fuse to blow is the one to the right at the back of where the cpu goes. Iâ€™ll post a picture. This cable goes to the front of the unit to the buttons, coin comparitor etc.
Suggestions?

Stayouttadabunker · « **Reply #13 on:** January 23, 2021, 09:19:45 AM »

Pull all the plugs out and remove the motherboard.

Then look closely...I mean closely with a magnifying instrument and look for burned out circuit traces.

You may need another motherboard or if good with and multimeter to find broken traces, solder some small 24-28 gauge wires between broken traces.

Also, while thoroughly and completely inspecting the motherboard, check ALL the pins for a bent pin....

Something is touching and shorted out in that area...

Whether the short is on the motherboard or the harness, wiring depends on how thorough your inspection is.

jvela58 · « **Reply #14 on:** January 23, 2021, 10:13:26 AM »

Good Morning!, I have replaced the harness from the power supply to the mother board with the one that you suggested. With the CPU removed, I have turned on the unit with each of the top three harnesses removed and connecting back individually, checking each one and the fuse did not blow. I put the CPU back on and the fuse did not blow. When I turn on the machine, the reels are firm. I connected the candle back. The fuse does not blow, but it gets hot. I replaced the starter and T8 light in the front panel, but it does not turn on.

Fixed tiny font issue
~moderator

Stayouttadabunker · « **Reply #15 on:** January 23, 2021, 11:36:23 AM »

The starter could be shorted inside of it...I got shocked once trying to remove a starter....
The plastic on the bottom of the starter that you can't see in the starter socket broke in half as I was twisting it to try to get it out of the socket.
Inside, the wires touched each other and I was thrown across the room.
I had become the quickest ground source because my left hand was on top of the metal door while trying to undo the ballast with my right hand.

Never, ever try to undo a starter ballast while the power is on....or undo a fluorescent lamp tube either.
Replace that ballast as soon as possible...don't even think of putting it back in.
They are cheap to replace from any hardware store.

jvela58 · « **Reply #16 on:** January 24, 2021, 10:58:12 AM »

Well I turned on the slot without the Hopper and MPU connected. The fuse gets hot but it doesn't blow. Then I connected the hopper back and the fuse doesn't blow and connected the MPU and it doesn't blow, but the 8A fuse still gets vey hot. When I turned on the machine I feel the reels get stiff and feel a vibration on them, each one of them.
Any more suggestions???
Thanks in advance for all your advice and help.

Stayouttadabunker · « **Reply #17 on:** January 24, 2021, 05:52:32 PM »

Are you using the right fuses?

jvela58 · « **Reply #18 on:** January 24, 2021, 07:24:27 PM »

I am using 8A 250V quick blow fuses for the middle bus, The top and bottom busses are 6A and I've checked them and they do not get hot. When I turn on the slot, after the Bill Acceptor powers up then the reels move very slightly and are stiff. I touched the reel and can feel a vibration.
Thanks for your help.

Stayouttadabunker · « **Reply #19 on:** January 25, 2021, 07:46:55 AM »

ok....when you close the door, watch the [Coins Played] display....
Note what number is displayed.
When you close the door, that display should go out for a couple of seconds and come back on.
This will tell you if the door optics are working correctly without trying to do it by the tests.
Then insert a quarter and see if it gets accepted.
If the lamp isn't burned out, the "Coin Accepted" lamp should light up...while at the same moment turning off the "Insert Coins" lamp.

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Author Topic: IGT S plus reels do not spin when powering up (Read 3535 times)