Error 41 and board compatibility

[Lizzo54]

Hi,


So I have been trying to get back to some old projects that have been sitting idle for a few years.  I have one IGT Splus machines left, its a Spin til you Win.  This machine had worked in the past but hasn't been run in a good 3 years.  When i was giving it a once over, i noticed that the battery had leaked all over the mpu.  I swapped out the board with an extra I had.  After clearing the ram and set chip,
I keep getting a error 41, this displays after the reels nudge a partial turn about three times.  They haven't yet spun more than that. 


Ive read thru several posts on both sites however I still haven't had any luck getting past this error.  What I did pick up on are some comments about the board size and game software compatability.  The board i am currently using is a 10mhz, the prior damaged board was a 16mhz board. 




The game chip is SP872 TYPE 0/1/4/5 and the reel is REEL SS 4447.


Can anyone tell me if this is compatible with a 10mhz board?   Any other comments or suggestions on this issue are welcome.


Thanks,
Lenny

[CVslots]

Ok, first, forget about about the 10Mhz versus 16mhz...it's NOT THAT BIG OF A DEAL!! The only difference is the EPROMs needed to run them, and those are easy to come by!

Lets look more at your errors, keep getting a 41? Swap the resistors off of R4 and R5....they were installed by IGT but never used (for the most part).

Give us a little more info and we will tear it up!   

[Lizzo54]

I will swap out those resistors later tonight and post the results.   


Thanks.

[Lizzo54]

OK so i swaped out the resistors from the old board to new board.  Did the ram clear and again the 41 error.  After it goes thru 4 cycles of all 3 reels turning about a 1/4 turn then a 0 falshes in the coin window between each cycle then the 41 pops up. 
Tha candle is a slow falsh on top and fast on bottom. 

[CVslots]

And machine operates fine with a good board in??

[Lizzo54]

Sorry, if i was t clear.  It ran fine in the past but hasnt been run for about 3 years.   Before running it this time i naturally gave it a good once over and found that the battery leaked and ran down the board.  So i replaced the board with the current one,  Which had worked in the past.

[CVslots]

Oh ok, that helps! Are we sure reels are plugged in and all that jazz? Reel harness is good?

[Lizzo54]

Reels have been switched around to diff positions with no luck.  I read past remarks about the wireharnesses. Ive unplugged and reset everything atleast once now and they appear to look ok.  Howeevr i guess theres always a possibility of a break somewhere. 
A couple observations from earlier today, i noticed that the light on the coincomparitor isnt on, however i dont recall if it should be.  Ive been into wms machines for awhile now and havent messed with these in a long time.
Everything else seems to be fine, dbv cycles, displays all work etc.  one thought i had was about the backplane board(if thats what its called, the board mounted on the floor towards the back of the machune that the cpu plugs into), there was some residue from the battery leak on it.  I pulled it out cleaned it up and didnt see any damage to any plugs, ports or componenets.  But i guess there could be unseen damage on that, right?

[jay]

You need to clear the error, turn the jackpot reset key with the door open then press the white button repeatedly to go through the cycle.
Close the door and see if its good.

[Lizzo54]

Before i resoonded i tried your advice however same result.  The 41 clears, the machine sits for a few secs then cycles thru the 1/4 turns and then the 41 error pops up again.  I even moved the reels around again and looked over the harnesses and plugs. 

[rokgpsman]

......  one thought i had was about the backplane board(if thats what its called, the board mounted on the floor towards the back of the machune that the cpu plugs into), there was some residue from the battery leak on it.  I pulled it out cleaned it up and didnt see any damage to any plugs, ports or componenets.  But i guess there could be unseen damage on that, right?

If it isn't too difficult it might be a good idea to remove that motherboard (interconnect/backplane board on the bottom floor of the machine that the mpu plugs into) and do a good inspection on it, both sides. It just takes one trace to be eaten away or some corrosion to cause quirky things to happen. And even if that isn't it you'd be better off cleaning that board of any battery leakage anyway since that stuffs slowly but surely eats away at whatever it is on. That board may not be your problem but I'd want to know what condition it is in since you saw some battery leakage on it.

When you swapped the mpu board did that also change out the transformer that connects to the lower left corner of the mpu board or did you reuse the original transformer? It sits directly in line below the battery, make sure there isn't anything wrong with the transformer or its wires and connections.

[jay]

I have had 41/43 errors are a bitch to clear.
One machine I had to run a clear chip through.

[Lizzo54]

So the clear didnt work and the error still remians.   


Surprisingly the transformer didnt get danaged and looks good.  The motherboard seems to be a questionable culprit, since it has some damage.  Ill post at WTB for a motherboard and also a additional mpu with tray.  If anyone has any forsale please send me a pm. 


In the meantime ill still play around with this but I dont see any other soloution. 


Thanks for help and remarks, if anything else comes to mind please send them along.


All my other machines are videos and Ive spent more time on this one then all the others.


Thanks again,

[rokgpsman]

..... What I did pick up on are some comments about the board size and game software compatability.  The board i am currently using is a 10mhz, the prior damaged board was a 16mhz board. 

The game chip is SP872 TYPE 0/1/4/5 and the reel is REEL SS 4447.

Can anyone tell me if this is compatible with a 10mhz board?   Any other comments or suggestions on this issue are welcome.
Thanks,
Lenny

Did you ever get an answer to this question of eprom software compatibility with the version of mpu you are using? Since you had read that there can be problems with some software eproms on certain boards and then cvslots indicated the same thing I think it's a question that needs settled. I assume you took the software eproms from the former 16mhz board and put them into the 10mhz replacement mpu board?

Your situation might not be a problem. My guess is that if you went the other way and used older slower eproms from a 10mhz mpu in a 16mhz mpu the old eproms may not be fast enough to work at the higher speed. You are doing the opposite, using fast eproms from a 16mhz mpu on the slower 10mhz mpu so this wouldn't be a worry.

But I could be wrong about this and it would be good to know for sure.

Also, don't forget about the infamous power supply connector that sometimes fails on IGT S+ machines. It often gets flaky or has a burned spot on one of the pins. Did you check for brown spots on the connectors, wiggle and tightened the power connectors? Be sure to check on both sides of the connector, problem might be on the backside.

[knagl]

Your situation might not be a problem. My guess is that if you went the other way and used older slower eproms from a 10mhz mpu in a 16mhz mpu the old eproms may not be fast enough to work at the higher speed. You are doing the opposite, using fast eproms from a 16mhz mpu on the slower 10mhz mpu so this wouldn't be a worry.

But I could be wrong about this and it would be good to know for sure.

SP chips designed for a 10Mhz board will only work correctly in a 10Mhz board.  SP chips designed for a 16Mhz board will only work correctly in a 16Mhz board.

Looking at the SP chip list post, SP872 doesn't indicate there what Mhz it's designed for, which nearly always means it's for a 10Mhz board.  SP chips designed for a 16Mhz board will always be indicated as such, so as StatFreak once said to me, "No news is 10Mhz news."  Additionally, there is no mention of Mhz in the PSR for the SP872, which is another indication that it's a 10Mhz chip. 

The older SP chips were designed when the only board around was a 10Mhz board, so there was no need to mention it.  Later generation chips were designed after the introduction of the 16Mhz MPU board, so the later SP chips were specific as to whether they were intended for 10Mhz or 16Mhz boards.

[rokgpsman]

The OP hasn't replied yet but his earlier posts seem to indicate that he removed the SP872 chip from his previous damaged board which was a 16mhz board. But if I understand right you are saying that the SP872 is for a 10mhz board only?? ok, I'm confused, may have to see if he corrects my assumption about the SP872 coming from his bad 16mhz board. But now that he's using a 10mhz mpu these chips he has should be compatible, right?

The game chip is SP872 TYPE 0/1/4/5 and the reel is REEL SS 4447.

[Lizzo54]

Ok so i made a mistake and incorrectly commented that i originally had a 16mhz board then installed a 10mhz.  Both boards are 10mhz.  My mistake was looking for the blue volume control knob, of which was missing from the first board, it must have broken off  some-point.  Thus i incorrectly assumed it was a 16 board, i should have done my due diligence and properly identified. 


Anyway, i will post a few pics of the cpu and mpu boards tonight.   


Sorry for the confusion.


L

[rokgpsman]

Ok so i made a mistake and incorrectly commented that i originally had a 16mhz board then installed a 10mhz.  Both boards are 10mhz.  My mistake was looking for the blue volume control knob, of which was missing from the first board, it must have broken off  some-point.  Thus i incorrectly assumed it was a 16 board, i should have done my due diligence and properly identified. 

Anyway, i will post a few pics of the cpu and mpu boards tonight.   

Sorry for the confusion.

L

Thanks for clearing this up, it validates the info and thinking about the board differences that knagl mentioned so that's always good to hear. This way if we have other owners checking into a similar problem they will have a better chance of understanding things.

Don't worry about any confusion, I already had some to begin with.