dieseldogpi
Member
OK, figured I'd start a thread for my Williams Flash Pinball rebuild. It is my first pin, and I have gotten myself in pretty deep. I explained a couple of things in my prevous first pin post, but i figured this thread will follow progress and allow people to yell at me when I do things wrong.
Here are a cpouple of pic:
First, I picked up this pin Wednesday. When it plugs in lights light up, and thats it. The two LED's are lit on the MPU board. After jiggling the MPU board, I hear a "bong" from the speaker, a selanoid clicks, and the LED's go off, but the gme is still inoperable.
Before I do a complete tear down, clean, wax and make everything look nice, I would like to get the machien into some working order,this way I know it works BEFORE I pull it apart, that way if it doesn't after, I know it was something I did.
Some things I noticed so far:
In this pic, you can see a couple of things. First, the AA batteries are hard soldered in, so I will have to get a battery holder and replace that. Below that, you can see two of the IC's are dis-colored, and very loose, guessing from acid leakage from the batteries. Also in this pic you can see the 40 pin connector between the two boards has had some work done. It appears that some of the male pins were replaced at some point as they a sticking out a great deal (left side of the plug).
In this pic you can see there is some black area near the reddish resistors(?). Other than that, I don't really know. I have no experience with a logic probe, but I will order one this week and start testing the IC's. Any other ideas or comments welcome. Also, just wanted to say thanks to Mike from economy pinball repair in Long Island and New York City http://economypinballrepair.weebly.com/
He took some time to go through a bunch of crap over the phone, very thurough. He definitley knows his stuff.
Here are a cpouple of pic:
First, I picked up this pin Wednesday. When it plugs in lights light up, and thats it. The two LED's are lit on the MPU board. After jiggling the MPU board, I hear a "bong" from the speaker, a selanoid clicks, and the LED's go off, but the gme is still inoperable.
Before I do a complete tear down, clean, wax and make everything look nice, I would like to get the machien into some working order,this way I know it works BEFORE I pull it apart, that way if it doesn't after, I know it was something I did.
Some things I noticed so far:
In this pic, you can see a couple of things. First, the AA batteries are hard soldered in, so I will have to get a battery holder and replace that. Below that, you can see two of the IC's are dis-colored, and very loose, guessing from acid leakage from the batteries. Also in this pic you can see the 40 pin connector between the two boards has had some work done. It appears that some of the male pins were replaced at some point as they a sticking out a great deal (left side of the plug).
In this pic you can see there is some black area near the reddish resistors(?). Other than that, I don't really know. I have no experience with a logic probe, but I will order one this week and start testing the IC's. Any other ideas or comments welcome. Also, just wanted to say thanks to Mike from economy pinball repair in Long Island and New York City http://economypinballrepair.weebly.com/
He took some time to go through a bunch of crap over the phone, very thurough. He definitley knows his stuff.