(Topic ID: 80267)

Jurassic Park (DATA EAST) club

By louknees

10 years ago


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Topic index (key posts)

59 key posts have been marked in this topic, showing the first 10 items.

Display key post list sorted by: Post date | Keypost summary | User name

Post #63 Data East / JP Ball Trough fix (#7) [Video] Posted by ChadH (10 years ago)

Post #98 Jurassic Park Ford Explorer [External Article] Posted by blondetall (10 years ago)

Post #138 Ball not entering gate at pop bumpers Posted by accidental (9 years ago)

Post #159 Creation Of Jurassic Park’s CGI Dinos [Article / Video] Posted by blondetall (9 years ago)

Post #162 Link to Loop Combo Scoop Mod Thread Posted by InfiniteLives (9 years ago)

Post #182 Link to CRT Mod Thead Posted by CraZyMuffin (9 years ago)

Post #209 Custom Apron Cards Posted by Pinballocks (9 years ago)

Post #322 Playfield Back Wood-Block acrylic mod Posted by smerff (9 years ago)

Post #357 Switch Matrix / Random No Target Scoring Bug Posted by ChadH (9 years ago)

Post #374 Link to Shaker Problem Thread Posted by aobrien5 (9 years ago)


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#4669 5 years ago
Quoted from jamex:

Hi, I have a problem with my IP. While playing, the pinball is switched off and only the GI is switched on with the display off and the 3 lights on the CPU board turned off. After 5 minutes, it restarts regularly

Sounds like your 5 volt supply is bad. I had to replace the capacitors on the main power supply board a while back and had the same symptoms. Easy way to check is to get a voltmeter and check the voltage at the test points. They are located on the power supply board in the upper right hand corner. The voltage is listed right on the test point. GI only and no dmd means you are not getting 5 volts. Check that one first. If not 5v, look at all the smaller capacitors on that board to see if any appear to be leaking. I think the ones responsible are C2 and C7 if I recall correctly.

#4675 5 years ago
Quoted from jamex:

The problem is only on power supply?

Here are some images of the power supply board. In the upper right corner, you can see the test points with the voltage next to them. Take a voltmeter and put it on 20vdc. Turn on the machine and with the coin door closed, put the black lead on a grounding strap and the red lead on each of the test points. Each should match the output. Check the 5 volt test point and make sure it reads 5 volts. Any less will cause the dmd to not boot up or reset. So the machine will wait for the dmd to start with the GI on only and will just sit there.

I also took a close up shot of the capacitors that I replaced. They were the two blue ones (C7 and C2). From the pic you can see where it is a little shiny around those two. These will leak spilling out onto the board. This may or may not be your problem, so make sure you check all the basics first like fuses and reseating connectors and ribbon cables.

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