(Topic ID: 41272)

Johnny Mnemonic Owner's Club

By Phetishboy

11 years ago


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#3247 5 years ago

Joined the club this weekend! I'm very excited, though having issues out of the gate. I had to take the backbox off to move it and I'm concerned I did something wrong on reassembly. I did a lot of verifying and can't figure out what if anything is incorrect, though there seems to be several variations between the WPC manuals...

Symptoms:
* turned the game on and the DMD was scrambled.
* Double checked connectors, re-seated, turned on the game, no improvement
* then the DMD went black, GI and inserts went out, the glove didn't move at startup, and the flippers started firing
* booted in safe mode, checked TP voltages on the driver board, all appeared ok (TP1: 15.3, TP2: 4.8, TP3: 11.9, TP4:0, TP5:0, TP6:72.8, TP7: 21.5, TP8-18)
* booted without the fliptronics board plugged in and no change

Attached some areas of concern after consulting the manuals (J137/138 = interchangeable? J133/134 = interchangeable?). The numbers on my CPU also do not match the manual (206, 207, 208 are different than in the manual). Do these look correct?

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#3253 5 years ago
Quoted from dudah:

Your voltages all seem good.
I would suspect the ribbon cables, specifically the CPU>Fliptronics>Sound>DMD chain. Ensure that the pins aren't bent, ensure the connectors are lined up properly (no skipped pins) and in good physical condition.
Also check the CPU>Driver ribbon.

I will do that, thank you! I'll check the pins and maybe do a continuity test on the ribbons if everything looks okay. Visually, the DMD ribbon doesn't look great going into the sound board. I also noticed the molex connecting the CPU to the battery board was a little wobbly. Could a bad solder joint(s) from the battery holder cause something like this?

#3256 5 years ago

Fixed my issue, which was a misplaced ribbon cable connection (off by an entire row of pins). Thank you dudah & CrazyLevi for the suggestion

Now back to more important things, does anyone happen to have extras of these plastics?!

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1 week later
#3262 5 years ago
Quoted from Lethal_Inc:

Added 5 days ago: Looked at a lot of different flipper pictures and not many have the tips of each left and right flipper directly in line with the lane screws.

I would agree. You are trying to avoid any sort of hop or dip as the ball transitions from the lane to the flipper, so I always focus on that line, meaning the top of the lane guide as it flows to the top of the flipper rubber. Here's a related discussion -- https://pinside.com/pinball/forum/topic/aligning-flippers-rubber-on-or-off-flipper

#3263 5 years ago

Johnny has been shopped (topside), cleaned, titan translucent rubbers, color DMD, 3 spotlights added, LEDs swapped with Comet sunlight 2 SMD. Looks & plays great. Now I just have to make sense of the plot of the movie. Enjoying the callouts though, and I'm glad the dolphin from SeaQuest could score another gig.

JM1 (resized).jpgJM1 (resized).jpgJM2 (resized).jpgJM2 (resized).jpg

#3266 5 years ago
Quoted from Lethal_Inc:

I put 2 SMD sunlight’s in mine too and it looks great, dont really care for colored GI on this game. Color DMD may be next as the animations look too good not to have one. There goes another $400+

Agreed. Sunlights are my jam, frosted in the GI and clear in the inserts/backbox. Plenty bright, highlights the original colors of the game really well. It makes things easy from an ordering standpoint as well as 99% of the time I'm only ordering two types of bulbs. To each his own.

The ColorDMD adds a lot actually. This is first time I've sprang for one. For one thing, I find it much easier to follow action/directions in quick glances in color vs monochrome dots.

3 weeks later
#3277 4 years ago

I tried to lower the enormous factory default high scores in the settings, but it still shows up as the default in the attract screen. If I go back into adjustments, the change was retained. Am I missing something?

#3281 4 years ago
Quoted from supermoot:

It has a backup high score setting you have to change first in some weird sub menu, then you have to reset them.

That did the trick, thank you. Now I can actually make the high score table, lol!

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