S2000 project in progress

[Brada]

Hello!

I picked up this S2000 in an unknown state. First wouldn’t power up at all. Found an issue with the power supply, will now power up. After getting it to power up got errors that all indicated bad battery on the board. Currently removing Varta battery and replacing dead coin battery with a cr2032 holder. Wondering what else I’m gonna be in for when I get the board fixed. I pulled the coin comparitor and it’s got an El Cortez dollar token in it. Looks to be similar dimensions to the Eisenhower dollars. Are there any tokens out there that are similar size? Can you still get Eisenhower dollars for a dollar or are they all collector coins now? What would it take to switch it over to modern dollar coins or even quarters? I’m assuming a different comparitor and hopper? Or would I be better off to make it Tito only? It has a ticket printer installed but no bill validator or cash box. Open to any suggestions!  Thanks!

[Stayouttadabunker]

See that round plastic thing with the "Slide" label over the El Cortez coin?
Push that black plastic to the side enough so you can remove the El Cortez coin out of the coin comparitor.
Then install an American dollar coin in there as your Sample Coin.
I'm going to guess you might need a different sized wheel shelf in the coin hopper.
Also maybe a smaller coin slot on the deck and maybe even a smaller coin-in optics guide that sandwiched in there?
The set-up that's in there now might be only for the large tokens....you'd have to change out a few things to make it work for the smaller quarters...maybe not.
Ayways, you'll know when the coin hopper has to pay out if it'll work with quarters or not.

Hey...are you missing the black & blue Universal Bill Acceptor (UBA) ?

[Brada]

Yes, I am missing a bill acceptor as well as a cash box. There is a piece of plastic in the coin comparitor that will not let it slide down onto a smaller coin, maybe that can be removed? Not sure what programming will be needed to get the machine working, again wondering if I would be better off to program out the coin mech and use a Tito with a uba.

[hotlsot]

That coin comparitor is for large coins only. If you want to run a quarter machine you'll need a different CC.

[Brada]

I got my board back installed with a new cr2032 and Varta battery removed. When I power up I get RAM ERROR. From reading on here I need to turn reset key a few times then hold the button on the board.
After turning the key once it says “ GAME EPROM CRC MISMATCH
-0xB000001”
After turning twice it says “NON-RECOVERABLE DADA ERROR”
Third time “SOME CRITICAL DATA WILL BE LOST”
Fourth time is press test switch 2-3 seconds. After I do that it says “PLEASE CLOSE THE MAIN DOOR” and I cannot get that to go away. I’ve read about the Varta battery eating at the door closure traces, but this board looks perfect. What do I need to try next? Including a picture of the board.

[Stayouttadabunker]

It DOES sound like your door optics are NOT seeing the door when closed right?
If the lamps are okay, the candle should be flashing as well?

You need to check the operation of the door optics.
The optic on the door is an emitter.
The optic on the cabinet side is a receiver.
They need to "see" each other to get that message to go away.

Try playing with the door latch wiggling up and down, to see if you can get them to line up and also watch to see if you can get the number in the [Coins Played] window to go out momentarily.
If you can do that, it will stay off for a couple of seconds, then come back on, and sometimes spin up the reels.
Sequentially, the bill acceptor entryway bezel light should light up - indicating that the bill validator is ready to accept bills.
What you don't see is at that same moment, the coin comparitor is also ready to accept coins - if your machine has the coin mech unit installed.

Another way to see if the door emitter is working, is by looking at it with a digital video camera - you may have one on your cellphone?
When viewing the door emitter with it, you should see a somewhat faint, flickering blue-ish light emitting from the diode.
To check the cabinet receiver optic requires a multimeter, checking for certain voltages.

Also, another way to check the door optics is to run the Processor Input Tests (Option: [4.1.3]).
It's somewhat a lot harder to do if you've never done it before.
If you really want to try it, we can tell you how.

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

[Brada]

I’m not getting anything to light up on the red lcd screens, winner paid, credits, and credits played are all dark. The light behind the $1 also does not light up. I tried looking at the door emitter with my camera and see nothing. Is there a common denominator that provides power to all of these things in the door? I can grab my multimeter and check power if I know where to check. Thanks!

[Stayouttadabunker]

Let's try to help you here ?
It sounds like you're missing power.
It's strange that you have power to the blue VFD display but not to that smaller rectangular display panel up above the printer?
History....have you ever seen that dsplay work before?
Is the harness plugged into it?
Also, use your multimeter set on continuity to check the denomination lampto see if it's burned out or not.
Unscrew the lamp socket from the display panel plastics and touch the two copper tabs inside the socket on each side of the T1-3/4 wedge bulb.

Slide out the coin hopper and place aside for now.
Set your multimeter for like 200vdc.
You need to see if three different voltages are reaching the backplane crcuit board the MPU slides into.
Put the red probe on three different pins into the power connector housing in the photo I've attached to this Reply below.
That power connector comes directly from the power supply, up behind the reel shelf, to the bottom right-hand side of the backplane board.
The black probe of your multimeter can be just touching the floor of the cabinet.
Let us know what voltages you get on the three pins.

Also, push the power supply unit on the back wall into the main connector pins better.
Sometimes during a move, that power supply tends to get loosened from the main connector on the right-hand side of it.
There's a tightening screw on the left sideof the power supply unit (PSU).
You may have to tighten it.
The best way to get at the PSU is to remove the reels from the reel shelf.

Finally, lets see the back of your door panel.
I wanna see if anything's missing or outta place.

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

[Brada]

I have not seen the display work, machine was purchased as a project knowing absolutely nothing about it. Trying to see if I can get to the bottom of it. Figured it’d be the best way to learn!

Harnesses are all plugged in. The denomination lamp did end up being burned out, checking voltage where the lamp plugs in I do have 13v.

Backplane connector, black 6.5v, red 13v, orange 25v. Power supply seems to be seated well, I removed and reinstalled, all pins look good. Attaching pictures of back side of door as well as behind belly door.

I got a couple boxes of spare parts, in them was another winner paid/credits circuit board. Tried plugging that one in and still nothing. Can’t guarantee that one works though either as I haven’t personally tried it. The top candle does start flashing as soon as the ram error happens, and goes off after the JP reset key is turned 4 times.

[Stayouttadabunker]

After that you may be instructed, on the blue VFD display to press and hold in the test button for a few seconds, then close the door.
Your power connector on the backplane voltages are good...6.5V, 13V and 25V
Idk why your other display doesn't come on? 
I'm nowhere near a machine right now.
I'd have to pull out a wiring schematics drawing for that display to tell you what voltages should be on that wiring harness.
I'd put a jumper wire in on the door optics for now, since you're not seeing any light come out of the door emitter.

Look below...>>>

[Stayouttadabunker]

okay I found it.
There's 2 connectors.
One is a 12-pin, (2-row of six pins) Molex Senet connector.
The other is a much smaller 2-pin Molex Power connector....there's a difference but the smaller one is for the power to that 7-segment display board.
They both have a red wire that matches the ones you've checked on the backplane earlier (Red 13v and Orange 25v).
 
You may notice, there's a red wire on both of these plugs going into the back of the 7-segment display.
The red wire would be on pin-9 on the larger [J51] plug (On the drawing, the black square is pin-1).
The red wire would be on pin-1 on the smaller 2-pin [J2] plug (That pin on the drawing also has a black square depicting pin-1).
I'm going to guess the smaller Molex is just a red & green wired harness....check the red one across the black pin for 13volts.
Also, check that ribbon cable from the Power Distribution Unit box (PDU) to the backplane.
Sometimes it gets loose.

Here's a couple of drawings for you.
Click on drawings below to enlarge if needed...>>>

[Brada]

Did a little more checking this morning. I noticed the belly door switch had been removed. I placed a jumper across the green wires. I did have 13v on both connectors of the display. Figured I’d try closing the door and see what happens. Immediately said checking memory, cycled through message and after that the red lcds started working.  When power is cycled it boots up and does memory check. The reels spin off then I get the errors “CALL ATTENDANT” “DOOR OPEN M” and “Coin-In Jam”

We’re getting closer! 😊

Edit: after opening and closing the main door “door open m” has switched to “closure m”

[Brada]

I was reading on the coin-in jam error and did a little diagnosing. I inspected all the wiring down to the I/O board and all looked good. Removed board and inspected all pins and all looks good. I am not getting any led lights on the I/O board. Are there pinouts somewhere to check the power supply and anything else with that? I have a newer looking I/O board model 14940201W in my box of spare parts, is this interchangeable? Connections look to be the same. Thanks, Brad

[Stayouttadabunker]

I warn you...do NOT pull out or push in those I/O boards while the machine's power switch is ON.
In fact, I stress that's you will be much happier if you turn off the power anytime you remove or replace electronic parts....it saves you money...haha
There's a small capacitor chip on these small circuit boards that WILL explode, and render the I/O card dead.

My question now for you is...which I/O card are you talking about?
The one on the top of the door panel under the button deck for the deck buttons, or the one on the side of the MPU enclosure box?
Can you show a photo of it?
Also, we need to see a clearer photo of where the green Varta battery used to be.
The circuit traces nearby may be lacking continuity due to acidic corrosion long before the battery was removed.
There are folks on NLG that are experts at repairing these eaten circuit board traces that cause all these errors you're seeing on the display.
They know how to fix the traces and remove parts that are NOT needed for home use.
I outlined the area in yellow on your MPU we need a better photo of - to see the circuit traces.

Let me show you a blown I/O card...see the one on the left?
That yellow chip is supposed to be at the [C5] location...lol

Click on any photo below to enlarge if you wish.
I aways re-size at least one side of my photos via Windows Paint to 1000kb, to fit into Replies...>>>

[Brada]

One of the first things I was told before I ever put hands on the machine was to always have power off before doing anything! 😊

I am speaking of the I/O board in the door, not the one on the side of the MPU. I am attaching a photo of it in my hand showing the C5 chip intact, in the picture it almost looks burned but that is a shadow from the legs of the molex connector. Also including a closer picture where the Varta battery was.

Question, I do not have a bill validator or cash box to install yet. Would those two pieces missing cause the coin-in jam error?

[Stayouttadabunker]

I forgotten to mention that your "Door Closure M" is good.
It's only a informational message informing that the door was recently opened...it's not an "error" message.

Make sure no pins underneath that I/O card is touching each other or bent before you push it back in.

The I/O photo was a much better, higher resolution photograph than the trace photo?
I cannot make it any larger to see the traces better.
You may need to send the MPU in for repair, but I'm not sure yet.
Look at the sizes of the two photos you've posted up.

[Brada]

Trying to post better picture. If this doesn’t work I’ll have to get a better one when I get home later.

[Stayouttadabunker]

Very good.
Your MPU has badly damaged circuit traces under where the Varta battery once was located at, as far as I can see.
I would suggest for you to send it out to a member named Lookes.
You may email him at:

slots@lookelectronics.com

Send him your MPU photo, and the error messages you are seeing on the VFD display.
He may have more info for you at that point.
There's nothing more I can do from here, until he looks at your board.
Good luck!

[t28c34]

I've been following along with you post having the same issues with no winner paid, credits and total bet lights and not getting past the close door message after removing the Varta battery. I cleaned the area pretty good with contact cleaner but was still getting the message. I took the board back out and cleaned and scrubbed it better with contact cleaner. Then inspecting very close and not seeing anything suspicious. Put it back together and it fired right up with all the lights on and machine running like it should. I would say it's your board with bad tracers.

[Brada]

I was thinking I need to pull the board and do some cleaning with contact cleaner. Did you just clean in the area of the Varta, top and bottom?

This board is a model 1952-2, I also have a spare 1952-0 in my box of parts. Are these interchangeable for testing purposes, and if so which chips would I have to move from the 1952-2 to get the machine to attempt to boot happily with the 1952-0?