mother board dilemma - "no display" error caused by?

[badbaud]

I have two different mother boards and have tried both in this game.
The first is a 960 mother board.
The second is a 960 Stepper / Video mother board.

The second board works in our shop machine, this machine has no video screen even though the mother board says stepper / video.

The customers machine had the first kind of mother board, all surface mount components, no video error mentioned and no video in the machine.

How do I get the basic non-video board to work in the customer's machine.

I keep getting an error that display netplex is down (after a report that the VF display passes self test).

On our machine there is a power plug un-plugged on the back wall box near the floor, right most plug.
If I unplug this will the MPU stop looking for a video display?

Do i need to disconnect one of the netplex connectors from the mother board?

[stayouttadabunker]

I think we need to know what game is installed in the machine.
Are you talking about an S2000 Vision game?

When you're saying that the customer has "no video in the machine" do you mean that his machine just has 3 or 4 reels without an LCD display?
Or does he have that error popping up on the blue VFD display?

[kforeman]

sounds like a power supply problem to me, not your motherboard.  the non-enhanced motherboards are interchangeable between the reel and video machines, that's why the one motherboard is marked as stepper/video.  swap the power supply behind the reels with a known good and see if your netplex error goes away.
you shouldn't need to disconnect any netplex plugs unless you want to have more netplex devices causing problems.

[badbaud]

Both boards worked in both machines except the customer machine had constant M-Door error.

When I put in another mother board, the one with stepper / video stamped on it I started getting video netplex down.

I think I plugged in something I shouldn't have.

[stayouttadabunker]

Both boards worked in both machines except the customer machine had constant M-Door error.

When I put in another mother board, the one with stepper / video stamped on it I started getting video netplex down.

I think I plugged in something I shouldn't have.

Or something's NOT plugged in?

A "constant M-Door error" ( Main Door ) is usually a misaligned and/or bad door optic ( emitter or receiver optic )
or a loose ground wire on one of the door sensors...

[badbaud]

After swapping out the mother board I encountered the display netplex down message and have to clear that problem before I can get back to the M-door error. I put the customer's original mother board back in the machine and still got the display error and can't get back to the m-door error.

Troubleshooting the m-door error before swapping mother boards I was getting a good pulse out of the door emitter but holding a known good receiver optic right up against the known good emitter with a extender cable gave me no output from the receiver. I thought it was something open on the mother board so i replaced it with a known good mother board. That is when I ended up with the netplex video error upon power up.

I am going to hard wire out the door optics to eliminate the optics but need to find out what I plugged in, or left out, to cause the video error.

[cowboygames]

Can't you usually clear a netplex error if it's a phantom error by having the machine do a search for netplex devices? That board may have come out of a video machine and has that in it's memory

[stayouttadabunker]

Doesn't it sound like the SB or SG chips are searching for a Vision display?
That could be why you're getting the video display error but you haven't reported nor have we heard
yet - what game chips you have installed...
You might want to perform a clear this one time - to wipe out the memory from
earlier installations as it is possible that previous memory data stored, may be in the way of this one?
This information may help our members help you out.

[badbaud]

The game chips are for a non-video game. The non-video game in our shop works fine. I put it's motherboard and it's MPU board into the customer's machine and got the video netplex error. The customer machine only had a M-door error before I did the swap. Putting the customer boards back in their machine and i still get a video netplex error now.

[cowboygames]

At the very least, I would go to netplex devices in the programming menu and have it do a search for netplex devices and see what happens. Did you try a power supply swap also? A loose or bad PS will cause netplex errors as an initial sign there's a problem developing with it

[stayouttadabunker]

On the S2000 motherboard, I believe there are two Netplex headers - one on top of the other?
To make sure, count how many contacts there are - should be the same.
Plus, it's written " Netplex 1" or "Netplex2" or "N1" or "N2" directly on the motherboard next to the header too.

Try plugging the Netplex harness Molex into the other one - maybe there's a bad pin in the Netplex header it's in now?

[Foster]

There are 4 netplex ports but one is for the BV it has 12 pins (2 additional for the Door Swtich)
All 4 are wired in parallel (netplex and power)

[badbaud]

Fixed. I put the original mother board back in the machine and replaced the power supply with one from our shop machine. Back to M-door error. Next I hard wired the door optic connectors to the service light switch, as shown in a previous post, and eliminated the M-door problem. Did a key chip setup, machine type and denomination, and the machine came up. Replaced a very slow BVD head and it took bills and the game played.

One further problem... it's to damn LOUD. How do I turn the volume down?

There is a audio amp in the top unit but no volume control anywhere. Lots of jumpers on the amp board, is that how it is done?

[stayouttadabunker]

The best sound fix I've heard so far is to solder in a 47ohm resistor
on all three white speaker wires.



                       OR 




Replace the MPU with a 504 version.

[Yoeddy1]

The best sound fix I've heard so far is to solder in a 47 ohm resistor on all three white speaker wires.



                       OR 




Replace the MPU with a 504 version.

Couldn't have said it better myself.

Jason

[cowboygames]

If it's just to loud, turn the volume down in the programming menu or put 10 ohm resistors on ALL speaker leads. The resistors will eliminate any backfeed/hissing noise in the speakers that comes through when you're using a multimedia board with sound simm. If the game doesn't use that board and sound simm, just turn the volume down in programming menu

[Foster]

Press attendant button on MPU

3 Options
     2 Sound Options
          1 Volume
               1 Game Volume
               2 Money Volume

[badbaud]

No such adjustments in this game, the 47 Ohm trick worked.

[stayouttadabunker]

No such adjustments in this game, the 47 Ohm trick worked.

Whoo Whoo!!  Good job! 

[badbaud]

Another strange thing I have noticed on this S2000 is you have to open and close the door twice to get the bill validator to energize and accept bills.

First door closure initializes netplex, second door closure enables bill validator.

Verified by a friend who used to work on them in a casino, this is normal operation.

[stayouttadabunker]

Another strange thing I have noticed on this S2000 is you have to open and close the door twice to get the bill validator to energize and accept bills.

First door closure initializes netplex, second door closure enables bill validator.

Verified by a friend who used to work on them in a casino, this is normal operation.

Hmm...   I just close the door once, wait about a minute,
the DBV lights comes on and the DBV is ready to go...

He must just like opening and closing the door for exercise... 

[badbaud]

Do you have door optics?
This one was converted to a mechanical switch. Maybe that's what is causing it?

[stayouttadabunker]

Do you have door optics?
This one was converted to a mechanical switch. Maybe that's what is causing it?

No sir,
I got rid of my door optics the 1st month I had my machine
and went to a cherry switch.
I like to be able to "fool" the MPU into thinking the door is closed when I'm screwing around with it while the door is in reality - physically open.

[badbaud]

Ya, that's the best way to go, use a switch.
For customer's machines like the PE+ and S-slot I made a cheater using a opto-transistor IC.
Door side goes to the diode, cabinet side goes to the transistor, a PC jumper opens and closes the door.