New Life Games LLC
**Reel Slots** Gaming Machines => IGT S2000 and Vision Games => Topic started by: Jim on April 27, 2016, 10:15:37 AM
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here is some information:
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last picture:
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thanks for info. most the ones we have are with open door or key switch won't work we don't have and idea where these traces run
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Jim, You are the MAN. I am glad I saved the bad boards and will definitely spend a rainy day messing with them. Even if I don't fix them they were already broke.
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Great info Jim
Thanks
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Jim... Thank you so much for sharing your findings.. How did you get the boards so clean? I've used vinegar and a tooth brush, but they never come out that clean.. Maybe the vinegar I'm using is too old and lots it's punch..
Gary
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Gary, there were 3 boards that I could not fix, one looked like the one pictured in reply #27, I found the problems with the traces, cleaned and repaired, however when put in the machine, it would boot, go through the initialization, but would come up with some different problems and errors. upon further investigation there was damage done to some of the legs on the IC's, the corrosion actually ate the metal from the pads. wasn't worth the time to try and repair. I didn't even try to repair the board pictured in reply # 27. I figured that I would run into the same thing.
as for cleaning the boards, I used a shot of De-ox-it ,let it sit for a hour, then cleaned everything with alcohol, wiped area with paper towels, put in the sun to dry.
Jim
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Varta battery is alkali. Best to neutralize with mild vinegar solution followed by lots of water.
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Hello,
How rubbish !!! :hissyfit:
Despite all this valuable information, I have not found traces cut on my 502.
I continue my tests by testing the entire area around the green battery.
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good to see progress on this problem
Hello,
How rubbish !!! :hissyfit:
Despite all this valuable information, I have not found traces cut on my 502.
I continue my tests by testing the entire area around the green battery.
on the 3 boards i have seen with this problem none of them were trace damage but a problem with u69 2 were fixed by re flowing the chip 1 by replacing the chip with one salvaged from a board someone had an accident involving a drill.
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have a near mint 502 board that has a hole brunt in the top of u67 what would cause that and how hard is it to replace a surface mount chip
thanks
steve
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im terrible with surface mount soldering so im going to say for me very. I had a reflow station when i did it and it wasn't too bad currently its none functional. If u want to attempt it I suggest looking into chip quick. Also im not sure what u67 is some of the chips on the 502 board have custom programming on them and have to be replaced with parts pulled from another faulty board.
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yes I have some bad boards I'll try taking one of those chips off 1st
thanks
steve
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Deffinetally look into chip quick its a special kind of solder for removing surface mout chips with high pin count. Basically just a low temp solder.
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Hello,
I checked the traces of U76 - U77 - U79 - Q2 - Q3 - D8 - R74 - R76 - U82 - U83 - U84 - RP19 - RP21 - RP23 and I have not found any abnormality ...
I don't think to successfully repair this MPU !!! :no:
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i tried the repair on 2 boards and both now have a system error message. in the photos, one of the photos has a jumper to upper pos battery connection, and the other picture show a jumper to the lower pos battery connection. also, it looks like in one pic, its 26 and 29 on u69, but in another they look closer, like 27 and 29. a little hard to tell, with the resolution. the only trace i found missing was battery holder to u69 but now im not sure it was really missing.
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Best way to resolder IC chips is to drag solder the pins. Apply paste solder flux to the row of pins and apply solder to tip of soldering tool. Heat the first pin and then drag the heated tool accross the pins to remelt the solder. If solder mask is not damaged this should refasten the pins to the traces and you should not get solder bridges. It takes some practice but it works great.
https://www.youtube.com/watch?v=wUyetZ5RtPs (https://www.youtube.com/watch?v=wUyetZ5RtPs)
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Just had a board that took some battery damage from a battery I had been meaning to pull but hadn't gotten to it, as well as replace the coin cell battery, and had started to get low battery and dreaded typical board damage errors. I removed the varta battery, replaced the coin cell battery, cleaned up around the varta battery, retested and errors were still there. That is when I went up to the garage and grabbed some CRC QD electronics parts cleaner I use on automotive electronics. The stuff is great, made for sensitive electronics, is quick drying and is easily found in any auto parts store. I sprayed the area around where the varta use to be as well as the area below the battery, let it dry for a few mins, wiped it off to get any residue, and retested. Errors are all gone and everything is back to normal. I'm guessing corrosion was bridging something it should not have and the CRC was able to remove it. Hope this tip can help some folks out.
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That sounds great. Let us know in a week or so if it stays fixed. I have at least 5 boards with the problem just sitting waiting for a good solution.
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Will do. It's held for nearly a day so far and across several power cycles and some light testing both in test menus and game play. If you have 5 boards sitting with an issue, might be worth grabbing a can and giving it a shot on one or two. I personally wouldn't mind some independent verification of it. Can't hurt the board as the stuff is made for cleaning exactly these sorts of electronic components in what is arguably a much harsher contamination environment.
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When using this cleaner, do you need to use a cleaning brush with it, like a tooth brush or other nylon cleaning brush?
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You could I suppose, but would really be dependant on how fragile any effected traces are. I simply wiped down the area with a microfiber cloth, sprayed the cleaner, let it dry, and re wiped the area with the microfiber cloth and my issues went away. Being an aerosol its going to have some cleaning force on its own during application as well.
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Update: just about 1/2 way thru a week since the fix and its still working fine.
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Over a week since I removed the damaged varta and cleaned up the board with the QD cleaner and still going strong. Another piece of advice is if you clearly have damage to a trace you could try repairing the trace with a solder trace pen. Its easier then soldering a wire between the points the trace previously connected and is an easy fix for small breaks.
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Thank you!
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Hello Everyone, Iv been reading this post trying to figure out this board. This is my first time on an s2000, I tested the 8 sets of traces and trying to figure out which is bad. I have a digital multimeter and set to the one I believe is what I need. From 1 to 8 this is what I get.
1. U60-pin 9 to U69-pin 33 meter goes from 1 to 000
2. U60-Pin 7 to U69-pin29 meter goes from 1 to 000
3. Eyelet R86 to U15-pin 3 meter goes from 1 to 1100 and fluctuates.
4. Eyelet Close to D9 to U69-pin26 meter goes from 1 to 000
5. Eyelet R65 to J8-pin 1 meter goes from 1 to 1600 and fluctuates.
6. U83-pin 14 to U69-pin 37 meter goes from 1 to 000
7. U83-pin 11 to u69-pin 37 meter goes from 1 to 000
8. u83-pin 9 to U69-pin 7 meter goes from 1 to 000
From there I am thinking that trace 3 and 5 are my problems. If they are, how do I fix it. Jim if you can help I'm trying to go by your information you shared. Any help would be greatly appreciated.
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the traces are so small and have very little content it is extremely difficult to just solder a wire on to the trace and repair, you have to follow the traces back to a component or pad, then attach a jumper from that point to the other component or pad.
very time consuming, sometimes you have success and other times not so much.
other people have tried other methods to repair, one involved removing 10 chips and installing a switch to jumper the interrogate signal, others have place those jumper leads to not used pins and eventually connected them to the cherry switch, bypassing the optics.
there are some people who will repair these boards. do a fantastic job, if you can't get yours running you may want to contact NLG member "lookes" he can preform magic with these boards, very professional individual.
Hope this helps.
Jim
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need help folled jim,s diagrams and notes all seem to be good on his list of 8 to check
i think i found my problem
the chip at c86 is missing on my 502 board
see pic
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It will run without C86. It's just a power supply bypass capacitor for U82 in the comm circuits.
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Thanx for info
I must have another problem
Took a board out of my double diamond no issues
This board I get close main door erro
Thanx freddie200