Jurassic Park (30th Anniversary LE)
Stern, 2023
Jurassic Park (Limited Edition)
Stern, 2019
Jurassic Park (Premium)
Stern, 2019
Jurassic Park (Pro)
Stern, 2019You're currently viewing posts by Pinsider waddlejrjr.
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I'm having an issue with my Jurassic Park where the center ramp opto registers balls that roll through it slowly (so if I go in test I seem to get a 100% success rate pushing one through with my hand) but sometimes fails registering balls that move through it fast (so in gameplay probably 1 of 10 shots will just fly on by and won't give credit for hitting the ramp).
Anyone else have this issue and have a suggestion for what to do?
Quoted from Manny65:I assume you mean the left (T-Rex) ramp? As the right ramp (with the spiral wireform) and the Heli ramp have micro-switches (not optos).
The entrance opto on the left ramp now has a modified left ramp protector that addressed fast balls not being detected - so if you have an early Pro or LE, this might help you (alternatively you can place a piece of tape over the low half of the opto hole). This reason is that the faster balls have a tendency to get more air on the ramp such that the ball doesn't break the lower part of the opto beam.
There is also an opto at the back of the left ramp (behind the backboard). The more recent machines off the factory floor people have reported that this back opto has been misaligned and needs the above tape technique or some adjusting
Quoted from DakotaMike:Yeah, the 2nd opto (reciever-side) on the t-rex ramp on my August-build Premium was defective out of the box. Not even misaligned, just plain defective. Would only give an intermittent signal. Stern shipped me a replacement and it worked perfect afterwards. Was a bit of an ass-pain to get to actually. Wasn't fun to have to do on a NIB.
Yeah it's the one in the T-Rex ramp behind the game, I just took it off and reflowed the solder too it, agree it was a pain to get to, that didn't fix it unfortunately so sounds like I will have to get it replaced. I believe my game has the mentioned ramp protector on it already.
I'll try the tape technique though, so piece of black tape that covers the bottom half of the hole in the ramp?
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Avon, OH