S+ Head Scratcher!

[sblair]

I meant I can't see anywhere a coin could have shorted that trace too.

We're talking about pins 1/2 on J8 which connect to Xfrmr taps #5 and #7.  Those two pins are in fact bussed together on the PCB.

[stayouttadabunker]

I agree with you but I'll tell you what.
IGT made a boo-boo when they left about a 1/4 opening the top of
the right -hand side of the Power Supply box.
Coins love to get into that little opening!
It's possible it had shorted in there behind the 6A fuse holder as well.

Pull the wall plug, remove the one single screw on the left hand side of the
Power supply case and lift off the cover.
Peer around inside near the 6A fuse...
I'll bet a gadzillion bucks you will see something black in there!

If not, as least you'll be able to clean out whatever's in there
and I don't have a gadzillion bucks either...

[poppo]

We're talking about pins 1/2 on J8 which connect to Xfrmr taps #5 and #7.  Those two pins are in fact bussed together on the PCB.

Yes. 1&2 are the 'commons' for the ac voltages. So anything else shorted on those ac lines or to one of the other pins on J8 will cause 

[sblair]

There were lots of coins behind the fuse holders and around the transformer when I got it.  My guess at this point is that the one of the fuse holders on the unfused side or transformer taps got shorted.  This would have caused more current to flow through the common side of the transformer which would have gone through those traces.

That's about the only possibility of a short that would explain it, especially since there were no blown fuses and the MPU was good.

[proten]

Unless someone changed the fuse before you started working on it.

[poppo]

That's about the only possibility of a short that would explain it, especially since there were no blown fuses and the MPU was good.

As already noted, the power coming in on J8 goes to other things besides the MPU. So just because the MPU is good, does not mean there isn't a short on some other line. For example the 24vac hot that goes to the motherboard then gets sent to the meters (among othe places).

Also are you sure there somebody didn't bypass the fuses. It would not be the first time.

<edit> Or as proten said - the fuse may have already been changed thinking it would fix the problem.

[sblair]

In that case the fuse should have blown before taking the trace out.  That is if it is properly engineered, which given some of the other things pointed out in this thread I wouldn't be as certain about

There was a lot of heat involved as it burned the coating off the majority of the length of the trace before it failed and since it was a power trace it was pretty beefy to start with.

They had moved it to their garage before we got there.  We powered it up in their garage and it did power up, but I could tell something was wrong as there was a I believe a 41 error and the wheels were twitching and the display and lights pulsating.  So I'm guessing it was shorted at that point.  When I got home I noticed all the coins during the inspection BEFORE I ever applied any power and removed them all.  When I first powered it up at that point it was dead.

[poppo]

In that case the fuse should have blown before taking the trace out. 

Have you checked the fuse value? Maybe someone stuck a 20 amp fuse in there.

[sblair]

Yes, fuse values were correct.  No 20A no-blows in there.

[poppo]

Well, then just fix the trace and smoke check it.

[sblair]

Already done!  She fired right up and worked.  Couldn't really play it as the garage is right below the bedroom.  I'm gonna do some burn-in time on it tomorrow.

Not bad for a $180 investment

[StatFreak]

Already done!  She fired right up and worked.  Couldn't really play it as the garage is right below the bedroom.  I'm gonna do some burn-in time on it tomorrow.
...

If you turn the sound off via the blue dial on the MPU board and make sure that credit mode is enabled (no hopper motor or coins to the tray), you should be able to play it without disturbing anyone in the bedroom above. In fact, you probably could get by with a low volume setting.

[sblair]

I did notice today one of the $5 worth of nickels I had pulled out of the machine had a pretty nice burn mark on it.

Everything is working with the machine now.  I just need to figure out what the parts I need are to convert it from nickel to quarter.

[Foster]

You would need at the minimum coin head, Quarter Spacer for the optics and hopper unless your hopper can handle quarters.

[blueridgeslots]

I did notice today one of the $5 worth of nickels I had pulled out of the machine had a pretty nice burn mark on it.

Everything is working with the machine now.  I just need to figure out what the parts I need are to convert it from nickel to quarter.

 

Minimum Stuff - (Upright)

Coin Head Backing Plate
Coin In Encoder for Optics
Shelf Wheel for Hopper
Denom Legend
Quarter for Coin Mech
Set Chip for BV if Equipped

Best to replace the Hopper Knife and Agitator at same time, easier but a bit more money complete Coin Head

Half Ass Way - but cheapest, (no I never have... Never Will, but seen many over the years)
Open up coin head with 2 hacksaw blades, open up coin encoder if jambs, hopper well just don't cash out much

ok last stuff was so someone didn't post it saying you can get by without parts, but have seen a bunch like it

[sblair]

Jim,

Thanks.  You should know I don't do it half ass by now

Can you shoot me a quote for it in PM?  I won't need the Set chip or the denom legend.

Scott

[knagl]

I like your new avatar, Jim.  I was starting to get really confused as of late when Foster changed his to the Tabasco glass, too.

[blueridgeslots]

I like your new avatar, Jim.  I was starting to get really confused as of late when Foster changed his to the Tabasco glass, too.

A "REEL" good friend on here made it for me for some odd reason, thanks for noticing it

[a69mopar]

I like your new avatar, Jim.  I was starting to get really confused as of late when Foster changed his to the Tabasco glass, too.

A "REEL" good friend on here made it for me for some odd reason, thanks for noticing it

It's good that you changed it. You are "unique", in a good way of course.....

W

[slots4home]

I wonder if the power supply shorted out with those coins around it and possibly could also
Short out the backplane Board.