Arcade Collecting > Pinball
I finally got a pin...RESTORED AND LOVING IT.
shardian:
--- Quote from: vintagegamer on August 29, 2007, 10:04:38 pm ---Soooooo........................... you mentioned a few months back that you didn't need any more projects, so you let a wonderful Ms Pac rot away on someone's front porch. And now I hear that you're sitting up at 2AM in your boxers, bidding on Charlies Angels pins on eBay.... Did I miss anything? Anyone else see something weird going on here? :D
And uh, oh yeah- congrats BOSLEY..
VG
--- End quote ---
I bid on work time, thank you! ;D I can't get ahold of the Ms. Pac people. There ain't much I can do about that. I have been able to get the misses to accept the pin begrudgingly, but she has officially put the hammer down on projects - NO MORE. :hissy:
shardian:
Did some initial testing. First off, here is what the game does when powered on: all of the playfield and backglass lights are on, and the gameover light is flashing. The displays do not show any signs of life. Other than that, nothing.
All the power block fuses are good. I started the initial testing and apparently my power supply is bad, or at least needs some work. The input voltages are present and listed below:
pin1 11.5VAC needed, ~12.6 present
pin2 11.5VAC needed, ~12.6 present
pin3 14VAC needed, ~15 present
pin5 14VAC needed, ~15 present
That is where things start to suck. There are no 5VDC, or -12VDC present at the top connector that supplies the MPU. The -12 pin goes straight to solid 0 on the DMM. The 5 volt pins flutter around .3 volts. I notice that the connector up there was kind of wobbly, so I at least need to take out the power supply and reflow some solder joints. The right side connector that supplies the displays has a 60VDC pin, a 42VDC pin, a 4VDC pin, and an 8VDC pin. All pins show nothing except the 8VDC pin - it shows 16VDC??
In the marvin3m manual, it says that if a -12VDC supply is missing, your MPU is ---fouled up beyond all recognition---. However, since nothing is getting thru I think I am safe there at least.
Oh, and it appears that the trouble large caps on the power supply have been changed at some point. Last thing, yes, the J1 PS connector is installed the right way. ;)
So, is the peanut gallery in aggreement that I have a bad power supply?
Addition: I went ahead and took out the power supply before I even finished this post. ;D Anyways, the problems are QUITE evident after getting to the back of the power supply. Fist off, I didn't have to desolder the Q1 transistor because the bad solder joints kind of just fell off. :laugh2: I noticed some masking tape here and there adn found out it was a brilliant way of isolating a repaired lifted trace repair. :laugh2: :laugh2: The repaired trace was on one of the 14VAC input lines, so I'm a little worried about MPU damage. Oh and the J1 connector pin header - I think my 6 month old girl could have soldered that better. :laugh2: :laugh2: :laugh2: Cold solder and broken joints galore.
Needless to say, I don't think this power supply is going back in the machine. I'm liking this pin hobby already! There is so much more crap to mess with. ;D I feel like I have already expanded my electrical knowledge by about 10 times.
ChadTower:
If it's that bad, just replace it. There are great new replacement boards for the System1 and System80 machines. Redesigned and improved upon.
shardian:
--- Quote from: ChadTower on August 30, 2007, 08:35:11 am ---
If it's that bad, just replace it. There are great new replacement boards for the System1 and System80 machines. Redesigned and improved upon.
--- End quote ---
There is a clean P/S on ebay I am watching right now for cheap. I'm not sold on getting a $70 new PS quite yet. I'd rather get the machine running and then go from there. I've already vowed to not buy a single cosmetic thing until the game works.
ChadTower:
If it helps, you'll never get the machine running reliably without a proper power supply. Pins, far more than vids, are sensitive to that.
Here's the usual order of things for this game:
* Check the fuses for ratings and continuity before you turn it on.
* Turn it on and get the power supply right.
* Replace battery or at least remove it.
* Repin the connectors, retin edge connectors, repin headers.
* Make all ground mods suggested on marvin3m.
* Playtest and fix issues as necessary.
90% of your issues will be gone by the time you get the ground mods done, and doing those things will ensure that you don't end up chasing 15 failures in the next year. If you don't do them it will fail more than once and soon.
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