Arcade Collecting > Pinball
Jungle Lord - Ball wont pop into plunger area
johnpurs:
The battery holders on these Williams games are junk system 3 - early WPC. The contacts usually fall apart when you remove and replace the batteries. This will happen even with no corrosion. I usually get a 4 position battery holder and solder in a diode the input slot blocking the charging voltage from the alkaline batteries. As described http://www.pinrepair.com/sys37/index1.htm#battery here. Then extend the wires from the holder so you can put the battery holder in the bottom of the backbox or something. Put some kind of inline connector so you can remove the cpu or use alligator clips to hook to the old battery holder.
Also for your original problems The ball not kicking out is usually just a switch. You can clean the leaf contacts with a business card. Then adjust them slightly and it will work fine.
For the flippers I agree about actually changing out the base plates so you can have a removable coil stop. No need to replace a coil unless you can't get the sleeve out. The other rebuild parts are worth buying. You may want to replace or clean the Flipper EOS switches. You can clean them with a contact file as they are high voltage contacts. Also make sure the cabinet flipper button contacts are nice and clean as well. A file will do fine there too. Cleaning those switches could make a difference in flipper power. Also make sure the eos switches are not opening until they really are at the end of the stroke.
Note the flipper switches and EOS switches are the only ones on that game you would clean with a file. The rest can be cleaned with a business card or piece of scrap cardboard.
smartbomb2084:
2503 2
04 00
AHA!!! NOW we are in audit mode!!!
We have working flippers and no strobing feature lamps. If you have strobing feature lamps then the game is in ATTRACT mode. The reason you can't play it is because of your original problem of the game not recognizing one of the balls in the ball trough. The game needs to know that both balls are in there in order to start. Remove the balls from the game. Remove the apron ( the metal covering that holds the instruction and pricing cards at the bottom of the playfield that covers the middle 'drain' ) and put the game in switch test as per the instructions in the manual. Touch any playfield switch and you should see its switch matrix number in the credit/match display. Now put the balls in the trough one at a time and see if the switches are recognized by the CPU. The ball trough switches go out of adjustment frequently on these older Williams' games because the ball drains down the middle often with a lot of force bending the leaf blades apart over time.
ChadTower:
--- Quote from: pinballjim on August 05, 2008, 09:38:46 pm ---You torqued the board when you took the batteries out and broke a connection somewhere.
...
Unscrew the MPU and driver board and disconnect and reconnect them (there's a 40 pin connector that interlocks them together).
--- End quote ---
Very likely in that interboard connector. If he hasn't at least reflowed everything there this game is going to be one hard to diagnose issue after another. The interboard connector on these era Williams games is trouble every single time. I usually tear it out entirely and put in a new one but often just cleaning up and reflowing all of the solder points will do a good enough job to make it mostly reliable.
smartbomb2084:
Yeah, he PUT it in audit mode. The game didn't BOOT UP in audit mode. Reading the thread helps.
vertygo:
Just for update / archiving reasons, this is what I've found out.
Because the lights are doing their display mode thing AND I can run through the tests (sound, etc) that eliminates the cpu/cmos issues for the most part.
The advice I got from my not-so-local shop that I drove to today, was that the ball not popping into the plunger area was related to my boot up issues. A ball switch wasn't closing for a yet-to-be-determined reason (probably dirt, maybe a frayed wire, etc). So I will try that route.
Basically, it seems like it's coming down to a cleaning issue. (Oh wait, didn't everyone suggest that in one way or another ? damn n00bz never listen)
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