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Brian D. Deuel

Member Since 19 Jun 2002
OFFLINE Last Active Apr 19 2012 1:52 AM

Posts I've Made

In Topic: Pong Hard Drive Mod

Mon Apr 9, 2012 10:41 PM

Hahahha!

I think I'll mod my Video Pinball unit by removing the 2112 and replacing it with SDRAM and a larger crystal. Much, much, MUCH larger crystal... :)

In Topic: C-380 Video Pinball button replacement

Mon Apr 9, 2012 10:28 PM

I'm working on repairing one now. Non-working left flipper and no sound. I've isolated the left flipper problem to a bad resistor. I can trigger the flipper by grounding the correct pin on the selector gate IC, and jumpering the leads of the resistor does the same.

I'll try a new speaker before trying to trace that issue, and see if that works.


View Postthegamezmaster, on Sat Mar 10, 2012 10:48 AM, said:

Just got mine slowly back to life. Great little machine. Still have a problem with static sound through TV. Any thoughts on how to repair? Also in breakout the paddle has lines coming off it, fix? Thanks.


If the game chip is socketed (as mine is), CAREFULLY remove the game chip and spray some electronic cleaner into the socket. Take an eraser and CAREFULLY clean the pins on the chip, then replace it in the socket and see if that fixes your Breakout paddle lines problem. Regardless of if it does or not, I'd go ahead and replace the socket anyway (this is on my to-do list as well), but the procedure I outlined is one way to attempt to isolate the problem.

View PostOfficial Ninja, on Fri Feb 24, 2012 11:14 AM, said:

After fixing this unit it worked for a few days and I was enjoying it. Played it a lot. Then,suddenly, it broke. It thinks the button for the right flipper is being held. I checked continuity and there is no short. The trace runs to a small chip under the metal shield. I can only assume that chip must have gone bad.

The chip is a Quad And-Or Select Gate, and is most likely quite easy to find (or, at least, a equivalent can be cross-referenced). Check the resistor(s) along that circuit as well. You're probably right and one of the lines on the chip is stuck, but it's possible that a resistor could be causing this stuck signal.

The data sheet for the chip is here: http://doc.chipfind..../scl4019be.html

Gotta love old electronics. Easy to work on, as long as the chips aren't custom.

In Topic: Dreams you had involving arcades or arcade games

Thu Feb 9, 2012 11:50 PM

I would have dreams of finding coin-op prototypes or nonexistent games in the strangest places. One of the places was a castle-like campus with a library, although I can't say if it was a college or not (you know how it goes with dreams). There was an arcade in one of the giant rooms with a tons of prototypes of black and white Atari arcade games. The one game that I distinctly remember was similar to Lunar Lander, with black raster graphics on a grey screen (a la Sprint), where the player would fly around and collect objects in order, avoiding walls and enemies. The cabinet was similar to a Midway Lo-Boy, with lights on the bezel and control panel that simulated a real cockpit. The gameplay is similar to a Playstation game I played called Mystery Planet, in a Japanese collection called Serofans (70s and 80s arcade game simulations; a great collection if you can find it). I'll never forget that dream. I even wrote a PC port of the game in my dream, with the graphics as best as I could remember them, but lost the code years ago. Maybe I'll write a Dreamcast port someday...

Info about the Serofans collection here: INFO