Double Diamond fuse help needed

[jakekelly937]

Yesterday I bought a double diamond machine from a lady.  I had her plug it in and everything worked fine.  When i got it home and plugged it in, it paid the last winner (about 45 coins) then the problems started.  The top fuse blows every time i turn it on, the led display and insert coin light do not come on, and now the wheels spin constantly when its on.  I have thoroughly searched for coins, screws, washers, etc that may have fallen during transport.  The fuse does blow with the big board removed (dont know what its called).  I also inspected that board and cant see any burn marks on it or the power connector.  Any help would be greatly appreciated.  Thanks

[Buzz]

I'm going to assume this is a S+  Picture's would really help.  If it is a S+ lift out the MPU ( what you called the big board ) the mother board is the one it plugs into, remove I think 3 screws, lift it up and check for coins or tokens under it.

[jakekelly937]

I have to shrink these pics before i send them but ill get right on that.  i removed the 3 screws but that only allows me to remove the clear plastic cover.  through trial and error i have determined that the fuse blows when i plug the bottom plug into the power supply (if that helps)

[jakekelly937]

let me know if other pics would be helpful.

[jakekelly937]

Ok.  I got the mother board out by removing 2 nuts on the back and 2 screws on the floor.  there are no coins anywhere that i can find.

[jakekelly937]

The model number is b5133ciw

[Jim]

check on the back side of the handle solenoid, I have seen coins stuck there, between the back of the cabinet and the connectors of the solenoid.

Jim

[jakekelly937]

I have spotted 2 big tokens in the very back of the power supply.  i can not get to them.  is there a trick to taking off the power supply box, it seems glued down

[jakekelly937]

I fished them out, put it all back together and same thing.  no led lights, wheels spinning, and fuse blown.  help?

[Jim]

I doubt that those are causing your problem.  but if you want to remove the power supply there is a screw on the left side and a 5/16" nut/ washer on the top front about two inches toward the back. I can see the cover is already off.  undo all the power plugs in the rear.

from what you described with the 115vac power cord plugged in no fuses blow.  only when you plug in the bottom plug the fuse will blow.  meaning all the voltages that the power supply makes are good until you output them to the motherboard.

Did you check the area that I suggested?

[jakekelly937]

I have really looked it over good including the soleoiod on the back wall for the handle.  the only place i cant totally see is in the power supply so i was gonna completely search it if i can get it off

[jakekelly937]

...and your summary is correct

[Jim]

from what you described, you removed the entire card cage,  we wanted you to remove the mother board itself.  three screws  and four clip standoffs. sometimes you have to persuade the motherboard off the standoffs. (using a long thin shaft screwdriver) 

we could try something else to isolate to the problem!  remove all plugs from the motherboard, and then try to connect the harness from the bottom power supply plug to the motherboard.

this would remove all the 24vac outputs to the machine and test if anything underneath the board is shorting out, if the fuse still blows then something on or underneath the motherboard is the problem. if the fuse doesn't blow then connect one plug at a time until the fuse does blow, then we will know what area to concentrate in.

Jim

[jakekelly937]

i got it off and don't see anything unusual.  no coins.

[jakekelly937]

better pics

[jakekelly937]

Do I understand correctly that I need to put the motherboard back in, connect only the power, then one by one connect everything else, checking the fuse after each connection?  i ran out of fuses so thats my first move in the morning.  Thanks for the help!!

[Jim]

yes, that will check out the mother board first with only power applied, then each plug, when the fuse blows then we will know which plug did it ,look for what decive is using 24vac and inspect or unhook it and isolate the problem.


Jim

[jakekelly937]

waiting on wife to get home with some more fuses.  can you tell what model i have by the pictures? also, there are 2 gold things that look to match up when the door is closed, what is that?

[jakekelly937]

Ive determined that the long skinny connection with the arrow is the culprit, now what do I do?

[Jim]

that plug is J-10,  it  sends 24vac to the handle solenoid.  there is a two pin connection that goes to the handle solenoid, unplug it and now see if the fuse blows. It shouldn't blow,  the problem is probably the  bridge rectifier located on the handle solenoid, one of the diodes is shorted to ground, or there is a coin lodged somewhere around that solenoid.

the gold things you refer too?   perhaps they are the door/cabinet optics.

Jim 

[jakekelly937]

it still blows when that is disconnected.  I looked for coins again and no luck. 

[jakekelly937]

correction, i did not try that one, thought those wires went elsewhere.  that did it, no blown fuse.  now do i order a part and put it back together? will it work with that disconnected?

[Jim]

yes it will, you won't be able to pull the handle or hear the thumps associated with the reels stopping.

put it all together and hopefully everything will work.

order a handle solenoid from people who have a banner on top of the page. it can be replaced by  removing three locknuts and rotating the coil toward the front, its' not easy, but  with some effort if can be done. I do it all the time. 

Jim

[jakekelly937]

ill do that today.  thanks for the help!  the "winner paid" shows 1 and the wheels keep spinning, any ideas how to clear this?

[stayouttadabunker]

ill do that today.  thanks for the help!  the "winner paid" shows 1 and the wheels keep spinning, any ideas how to clear this?

Open the door and turn the reset key once.