Arcade Collecting > Pinball
New pin: Lethal Weapon 3 (Update: FIXED)
shardian:
It still is baffling that the coil even tries to fire. I get equal voltage (43 volts approx.) at each lug. Anyone care to take a technical stab at what is going on?
shardian:
--- Quote from: shardian on August 31, 2009, 04:16:56 pm ---
--- Quote from: pinballjim on August 31, 2009, 02:49:45 pm ---If the game is attempting to fire the coil when it should be, you do not have a logic problem.
--- End quote ---
Someone mentioned it, and I did see in my brief overview of the pinrepair document that some coils can have 1-2 pre-drivers. Like I said, I have no clue how exactly this works yet. For all I know, the main transistor could be bad and the pre-driver is sending a ridiculously weak signal to the coil - but a signal nonetheless.
Like I said before, is this even a remote possibility? Even when I pushed it past that 1/8" mark, it seemed on the weak side.
--- End quote ---
--- Quote from: pinballjim on August 31, 2009, 04:31:11 pm ---No, not really. You've probably got the wrong plunger.
--- End quote ---
The coil firing at this point was a red herring. It somehow had enough juice to pull the plunger down once i gave it more to bite on. It was enough to pull it all the way down, and lightly slap the stop. I could stop it by holding it with my finger.
Obviously it is a possibility, because it is happening. I would be very curious to know how/why this is happening. If the 7408 has bad connections, it shouldn't do anything I would think. How does it send a signal to a fully powered coil, but only very weak. ???
shardian:
Put the glass on last night, and now the pin doesn't work. It worked fine before I put the translite and glass back on...
To top that off, the monitor in my Paperboy crapped out about the same time.
shardian:
According LED status, I now have a bad game EPROM...or two. Pinrepair guide also goes as far to say that this is very rare. What the.....
I have older rom chips, but now I am hesitant to install them. Anyone here burn EPROMS? I supposed I should just send off all of my rom sets for this and get them burned to the newest update. That way I have several good sets.
shardian:
They are 2.08 roms. I still have the older ones too.
I also just collected a box of new parts/bulbs from the guy I got the game from. Very cool.
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