Asking for more help please...

[jay]

What he was saying is what was mentioned before. Its possible that the connector is not making good connection with the mother board.

[jonbbrew]

What he was saying is what was mentioned before. Its possible that the connector is not making good connection with the mother board.

I tested continuity across that molex connection by using the back side of the motherboard where the pins are soldered. I am fairly confident that connection is good.

[jay]

Are you able to swap harness....?

[jonbbrew]

Are you able to swap harness....?

You mean cabinet harnesses? No, my two Splus uprights have different configurations for some reason. God i hope thats not the only way to figure this out. The strange part, well actually so many, is that brief flash of the zero on the left when starting up. It shouldnt be there.

I also just ensured the motherboard was good by putting it into a working machine. Worked just fine. So its doubly confirmed that both boards are working.

[jonbbrew]

What other options would keep working powered boards from booting with no wheel spin, no display and test button non functional?

[Jim]

since both boards are good, power is good, do you get around 10 vdc measured across the large cap right near the  connector on the display board. also does the denomination lamp com on?   did you swap display boards?

Jim

[jonbbrew]

since both boards are good, power is good, do you get around 10 vdc measured across the large cap right near the  connector on the display board. also does the denomination lamp com on?   did you swap display boards?

Jim

Yes denomination lamp does come on. A brief flash of a zero on the very left of the display  board.

I dont know what "Large Cap" near the connector is? Can you show a picture?

[Stayouttadabunker]

Now would be a good time for you Jon, to send me that cell phone video of the machine trying to start up from the time you turn [ON] the power switch.
We need to see the reel glass display and the reels at the same time.

[jonbbrew]

did you swap display boards?

Jim

i dont have a spare display board

[jonbbrew]

See the harness that has mostly brown wires that plug into the motherboard on the floor?
Those wires are only for the mechanical meters...you don't need it to be plugged in for the machine to work or boot-up.
The clicking of the meters can be a nuisance....also the meters are very old and get stuck too.
When that happens, they draw more amperage from the PS.
I would disconnect that harness from the motherboard.
You never answered about if you have any smoke-clogged stuck topbox fans.
Check that too and disconnect if bad.

Disconnected meters no change. N

[jonbbrew]

See the harness that has mostly brown wires that plug into the motherboard on the floor?
Those wires are only for the mechanical meters...you don't need it to be plugged in for the machine to work or boot-up.
The clicking of the meters can be a nuisance....also the meters are very old and get stuck too.
When that happens, they draw more amperage from the PS.
I would disconnect that harness from the motherboard.
You never answered about if you have any smoke-clogged stuck topbox fans.
Check that too and disconnect if bad.

Disconnected meters, no change. No fans to disconnect.

[jonbbrew]

Still virtually dead, no boot....

I just put in a new molex with Trifurcon pins-No change. Same symtoms. I had a slight hope this would do it as its obviously a common issue but through my previous testing it appeared to be delivering power to the MB.

So....Now what?

Power Supply is ok-Tested
Fuses are ok-Tested
Molex plug/harness is ok-New
Mother Board is good-Placed into other machine and worked fine
CPU Board is good-Placed into other machine and worked fine
(Other good boards put into this machine and no better)

What does...
Lights power up
Bill Validator powers up
Reels are stiff
Nothing on display at all. In previous attempts there was a faint 21 once but has never returned and a zero a few times as of late that showed for a millisecond that has not returned.
No reel spin.

So where do i go from here? It would seem to me that perhaps everything is booting up or could but maybe signal is not leaving board? I am totally lost and frustrated.

Thanks in advance to anyone's help and to all who have previously helped me.

[Jim]

you don't need a spare display board, both types of displays used in splus machines can be put in any machine for test purpose.

what that means, if you have a small display mounted to the left of the reels, it only uses a 5 pin connector.

the large display that goes along the bottom of the reel glass uses the same 5 pin connector, so you can just plug in either display, you don't have to have it in the machine, you can test with the door open, this will eliminate one more thing.

the other connector on the long display controls the denom lamp, insert coin lamp, coin accepted lamp.

have you also tested the SS aqnd SP chips from the bad machine in a good machine?

Jim     

[jonbbrew]

have you also tested the SS aqnd SP chips from the bad machine in a good machine?

Jim   

I completely move both boards separately and together into a working machine and they worked. Obviously the game was wrong but it’s fine the wheels booted up and work perfectly.

Will a bad display keep  the machine from booting?

[Jim]

How do you know its not booting?  you can't see any codes or numbers.  Just saying,   

Jim

[Tilt]

It probably has a 61 error from all the board swapping around, but if the display is bad you won't see it.  Is the candle blinking?  If it is the MPU is booting.

[jonbbrew]

How do you know its not booting?  you can't see any codes or numbers.  Just saying,   

Jim

Thanks. Maybe I assumed incorrectly but I thought booting was occurring when reels spin up.

[jonbbrew]

It probably has a 61 error from all the board swapping around, but if the display is bad you won't see it.  Is the candle blinking?  If it is the MPU is booting.

Good point. Well that’s just it too. To have sourced a candle as the one on it is broken. One of those things I was going to buy once I knew it would boot up but you bring up a good argument for me to splurge on it to help with diagnosis. I made that decision before I knew the boards are good. So now I guess I should buy a candle and display and bite the bullet.

[Tilt]

Yeah, those are pretty cheap items compared to MPUs and motherboards too.

[Jim]

before you purchase anything, use the display from the slant top and plug it in to the upright, doesn't have to be installed, just unplug the 5 pin connector from the upright machine and plug it into the display from the slant top, holding the display in your hand, turn on the machine and see what you see on the display!

should take all of 10 minutes to do this.

Jim