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I was having handle issues with sticking so I removed and cleaned the solenoid assembly. Simple process. BUT, I went to power up my unit and WTF????  The lights on the main board flash but nothing else. No display, no fan, no nothing! What could I have screwed up with such a simple process? So the only thing happening is that all the lights on the main board above the small white button all light up and then go off. Then all light up and then go off repeat the process. I appreciate the help.

I noticed a couple more things. The light bulb hanging in the back lights up the inside of the cabinet (and will go off with the door switch) and the coin comparator light (on the back of the unit) flashes off and on also. No other lights or the display do not come on. I really need help! (and a facepalm icon)

Make sure the 2 wires coming off the solenoid are not touching the cabinet. They could be shorting something out.


Is this the one you were looking for?  :279- :279-  or  :25- :25-

what happens if you just unplug the solenoid assembly and insulate the leads?  Maybe in your cleaning process you shorted something on the solenoid?

I tried disconnecting the solenoid and same thing. I was hoping the board lights all flashing on and off would help point the way. :103-  :279-

what happens if you turn on the machine with no mpu board, do the lights still flash?  If it doesn't, then I would start by unplugging different things off the motherboard, like reels, and I/O boards separately until the flashing stops (if it does).  This will isolate the part that is causing the issue.

What is the mpu board?

The big traylike assembly where the game chips and sound simm go.  It is vertically mounted on the left side of the cabinet and has a "tab" that you can grab and pull towards you.  It is the "brains" of the slot.

But that is where the lights are blinking on and off...

you could of fried that board.... try swapping boards if you have another...

Don't know what he could have done to fry the board?  :103-

What do the LEDs do normally? Aren't the ambers on solid, or is it an amber and green? I guess I've never paid that much attention to them...

You said other things are blinking on and off too, just trying to isloate issues.  BTW, it needs to be said that anytime you do anyting inside your machine as far as moving or removing parts, it should be with the power off.

Power was off and the plug unplugged.

if he is runnng a enhamced board only the top green light should be a solid color green.....like pic below.....i would pull that board out and reseat it with the power OFF.......

also check power supply make sure its all the way to the right snapped it.... could of got in loose while you were messing with the handle..... its located behind the reels...

OKey-dokey. There is a small board on the side of the main board metal enclosure. When I pulled that board off the machine started. (It has a small handle) Now I have a meter disconnected error. The board number is Model:1920A and there is a part number on the sticker of 14930200 Rev A. Now the question is: what is the piggy back board for? Is pulling the board giving me the meter disconnected error?

thats your i/o board reseat it and start the game up what happens?

That board interfaces the meters, backlit reels and other devices.

If you plug it back in all goes dark except for the flashing lights on the main and the comparator. Would this give me the meter disconnected and door open error?

if its still does the same thing after you reseat that i/o board..... theres a good chance something got loose or not connected all the way somewhere.....

is your meter connected?

make sure all the reels are pushed all the way back and seated properely....check meter make sure its connected.....something isnt plugged in right..... def doesnt sound like a short if you had the power off.....

A faulty cabinet I/O gives hopper errors and Coin-Out Jams usually. Never heard of it giving a meter error. So, to recap, you are saying this is what's happening:

With Cabinet I/O installed: all dark except for MPU light and coin comp
With Cabinet I/O removed: meter error and Door Open

I can get a Cabinet I/O out to you tomorrow, but I'm not sure that's your problem. You turned machine off and reseated MPU board, correct? Even if you never removed it, it could have jiggled loose, but you really shouldn't even have any lights on it if that was the case...

Are you talking about the 4 little meters on the lower right side with a window? Yes

Roz, I was under the impression that the cabinet I/O board interfaces the meters to the system?

With the small piggyback board that clips into the main board metal enclosure nothing works except for the flashing lights on the main board and coin comparator light. If I unplug (remove) the small board the machine starts but gives the meter unplugged/door open error.

That may be true, I have just never witnessed a Meter Error caused by one. If the Cabinet I/O controls/interfaces with the meter, then it is operating normally if when he unplugs/removes the I/O, the meter error appears on the screen. Now the Door Open M, that's just telling us the door is open, which it is, if he's inside unplugging the I/O.

Something is fishy with the I/O if when he plugs the board IN, the machine goes dark though....and then responds as it should (meter error and Door Open M) when the I/O is removed.

Just to clarify things a bit. When the lights on the logic (AKA MPU) flash there is a short somewhere. Absolutely the IO card being bad/removed can cause the meter disconnected error as I have seen it personally.

If I am not mistaken the solenoid for the handle is also operated by the cabinet IO so that is likely where the problem originated. Removing the IO board removes the solenoid form the circuit so the IO is not necessarily bad but you know it is either the IO card itself or something after that in that circuit. It is unlikely that it is the meters unless you got them wet or something. Or possibly a pinched wire when you reinstalled the solenoid?

And just to be clear the "small piggy back board" is the cabinet IO card. You will have a similar IO card in the door running the button lights and switches.

So my educated guess at this point is, disconnect the solenoid and insulate the leads to prevent shorts and re-connect the I/O board and see what happens.  Something might have gone wrong during the solenoid cleaning.

That is a good suggestion. The one caveat is that it is possible that the IO card is now bad as well. Even if the original failure is remedied you may still get the active short in the IO.

Just something to be aware of.

when looking at a schematic of the LOWER CABINET INPUT/OUTPUT board yes it handles the meters the hopper and the handle input. so it sound to me like maybe a output to the solenoid somehow shorted to a connecter to the micro switch that is the input from the handle and is ether confusing the i/o board or fried it entirely.

 :103- :103-

make sure the handle mech is wired properly replace LOWER CABINET INPUT/OUTPUT board if it still doesn't work its time to call a tech.

I ended up being the handle solenoid. I had only disconnected one wire but when I totally removed it all is well. It appears that the solenoind's coil was internally shorting.

Great to hear and good job!  :3- :3-