S2000 Displays Netplex link is down and NO DISP, pls help.........

[buzzarama]

OK, I have been reading everything I can but a cannot figure this one out. I have an S2000 slant enhanced with i960 that on bootup has Display's NETPLEX link is down on the VFD. The reel backlights are on, the B/A cycles properly, after about a min the reels spin up to home positions then the VFD goes black and the right side display reads NO DISP. about 10 seconds later the 2 tone alarm goes off. 

Things I have replaced with known good parts.
VFD
Replaced the P/S behind reels with new
Main Power supply (not Win-Tech)
harness's to the VFD
MPU
I/O controller
RCU
CPU
checked all netplex connections, reseated connections
disconnected printer
disconnected B/A


What am I missing, this thing is driving me crazy 

Pls Help, thank you, Newb -Buzzarama

[cowboygames]

What game theme is this on? Single line? Multi-line? If multi-line, does it have the multi-line display to the left of the reels?

[buzzarama]

Single Line 3 reel red white and 2 blue

[buzzarama]

Single Line 3 reel red white and 2 blue

Oops, sorry, game theme is triple double strike, not red white and blue

[cowboygames]

Looks like you've swapped out all the common problem causers. With the machine off you might pull the MPU tray and make sure all your chips are seated properly with no bent pins. My bet would have been a loose plug going to the vfd or from the vfd to the circuit board with the white plastic cover on the inside door panel. Does your VFD display have a ribbon cable plugged into it or just the two molex plugs on the side?

[buzzarama]

It has the 2 molex connectors, no ribbon. I tried a new SB Chip (SB100448) before I swapped the MPU this morning, the new MPU had all new chips in it. Still no dice.

What I dont understand is why the VFD has its message and once the game loads to a certain point it goes out and the display on the right says its message. Almost like when something initializes, it kills the VFD.

[cowboygames]

Do you get anything in the other display with credits, winner paid and whatnot?

[buzzarama]

No sir, just no disp.

[cowboygames]

Do you have that part of the display next to the reels or below them? The credits and winner paid part I mean

[buzzarama]

Its just in the main door, nothing next to the reels, its below the reels (slant)

[cowboygames]

Sorry, forgot you'd said slant top earlier. So you've got a separate 12 pin molex that goes into that display. I'm gonna be a little foggy here as my 663 display, which is what it sounds like you have versus a 552, is all one assembly where mine is two separate assemblies. Can you post a picture or two of that complete assembly for us so we can see the differant harness's plugged into it for the VFD and LED display sections?

[stayouttadabunker]

Could it be the 6-6-3 v.s. 5-5-2 settings in the menus?
I had this error last week when I tried to install a 6-6-3 display with an SG pair of chips that wouldn't support it.
I can verify the problem was with my SG chips being non-supportive...I wanna sue for child support...

[cowboygames]

That's a good thought Bunker. I know I've read about that, but mine have always autoconfigured when I change them so I've never actually seen it.

[stayouttadabunker]

I think we need to see what display set-up he has under there and what chips he's using.
Maybe we can find something that'll work for him?

Buzz, what SG's chip pairs (GME1&2) are you using?

[buzzarama]

I will send some display pics in the morning.

Here is the chips (good point cause it is the only one of these titles I have)
SB 100448
SG 000492 1of 1
SG 000492 2 of 2
VS VS011GX1
DSP DSPL0002

Bunker, not sure what you mean 662 and 552. Is there some settings I need to look at?

[cowboygames]

Those are the 2 differant types of LED displays that IGT used in the S2000 machines. They are defined by the number of individual LEDs used for each section of the display. 5digit, 5 digit, 2 digit or 6 digit, 6 digit, 3 digit, representing coins paid, credits and coins played. And by your listing of the chips you have, it appears that your MPU is a 1270 enhanced board. If you have a volt meter would you check the voltage on the green 3 cell battery and post the findings. Those 1270 boards will do some funky stuff if that green battery dies. Also, check to make sure you have a good plug connection between the board those chips are mounted on(known as a legacy adapter board) and the main MPU board.

[stayouttadabunker]

  I just typed out a long drawn out explanation and when I was gonna hit the "post" button -
all I saw was the red warning " Someone May Have Posted While You Were Sleeping"
or something like that! 
Cowboy, you ride this one in....I'm outta here! 

[cowboygames]

Bunker that's when you say screw it and hit the post tab again. Or set your profile up so it doesn't display that message and just posts your reply...

[buzzarama]

IC, I will check the battery in the morning and let you know my findings. Thank you both for your time. I know I'm in for a lot to learn.

Something else while we are on the MPU subject, would a RAM clear help at all here and if so what chips are needed to clear the enhanced board. Does the backplane (not sure if that is what it is refered to in this cabinet) hold any info that needs cleared when changing the MPU?

[cowboygames]

The MPU and the backplane or motherboard both store info that gets cleared when you use a clear chip. At this point I don't beleive a clear chip will do you any good as those are generally only used for clearing the machine to reset accounting related settings. A key chip would be a good thing to have though as it is used commonly to change payback percent, player denom on multi-denom games like yours and other game function type settings. With the enhanced board you'll be wanting to find a key45 chip. If you feel you just have to have a clear chip then I'd go with a clear224

[buzzarama]

Ok CG, the voltage on the green (varta) 3 cell is 1.18v, it has listed 3.6v so the battery is a little weak huh.. Display pics will follow shortly.

Also, key45 chip and clear chip 000224 are on their way just in case. (Thanks Ebay

[cowboygames]

That green battery is rechargeable. You can try leaving the machine on for several hours to see if it recharges fully and makes any kind of differance in game operation.

[buzzarama]

On and charging

Here is the display 5-5-2?

[stayouttadabunker]

Yup!

[cowboygames]

What type of harness plugs into that part of the display?