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Author Topic: Pole Position II -Glad I Didn't Buy a Lottery Ticket  (Read 421 times)

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Mike A

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Pole Position II -Glad I Didn't Buy a Lottery Ticket
« on: October 10, 2017, 07:31:52 am »
Well it looks like my luck turned a little sour. The graphical glitches came back. They come and go now. I am going to start by removing the PCB and attaching 5V and Ground to every test lead I can find. A couple of the edge connector pins are burned which I found out is relatively common with Pole Position. The guy before me only attached an additional 5V to one spot on each PCB.

I am going to power the PCB with a modern switching power supply to see if that and the additional power distribution wires calm things down. If that works I can clean up and refurbish the original power supply at my leisure.

jennifer

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Re: Pole Position II -Glad I Didn't Buy a Lottery Ticket
« Reply #1 on: October 10, 2017, 07:14:46 pm »
  Not quite sure what your working on, But that sounds more like a bad ground , faulty cap, or transistor given the burnt pins... If it did work something has changed in terms of draw.

HaRuMaN

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Re: Pole Position II -Glad I Didn't Buy a Lottery Ticket
« Reply #2 on: October 10, 2017, 07:20:08 pm »

jennifer

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Re: Pole Position II -Glad I Didn't Buy a Lottery Ticket
« Reply #3 on: October 10, 2017, 07:34:55 pm »
   Or this since you tricked me to that wet fish Klove...http://www.ratemyvomit.com/

Mike A

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Re: Pole Position II -Glad I Didn't Buy a Lottery Ticket
« Reply #4 on: October 10, 2017, 08:08:58 pm »
There is a design flaw on Pole Position boards. The power distribution is uneven I guess because of the physical size of the boards. More power gets dumped in to compensate. Eventually the edge pins fry. That is what I read so far.

Mike A

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Re: Pole Position II -Glad I Didn't Buy a Lottery Ticket
« Reply #5 on: October 11, 2017, 05:27:55 pm »
Well I started pulling, cleaning, and reseating chips one at a time. It appears this guy was causing problems. I have a good solid picture again. We will see how long that lasts.

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Mike A

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Re: Pole Position II -Glad I Didn't Buy a Lottery Ticket
« Reply #6 on: November 06, 2017, 10:25:44 am »
I am starting to work on my spare Pole Position 2 board. This chip is garbage. Two legs are broken. How do I go about getting a new ROM chip? It is 52XX.bin I think. is there a professional service that flashes ROM chips or is the equipment cheap enough that people do it on their own? I don't know anything about this.

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yotsuya

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Re: Pole Position II -Glad I Didn't Buy a Lottery Ticket
« Reply #7 on: November 06, 2017, 10:55:38 am »
If that's a Namco custom, you're SOL. You'll need to find a board to harvest one from, or just get on the Multi Pole Position waiting list. You could also try resoldering new legs onto the chip as well.
***Build what you dig, bro. Build what you dig.***

Mike A

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Re: Pole Position II -Glad I Didn't Buy a Lottery Ticket
« Reply #8 on: November 06, 2017, 11:12:10 am »
My board has the Atari Pinout.

Could you point me to instructions for soldering new legs onto a chip?

Thanks Yotsuya.

Mike A

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Re: Pole Position II -Glad I Didn't Buy a Lottery Ticket
« Reply #9 on: November 06, 2017, 11:19:17 am »
I checked out a video showing how to replace a broken leg. It looks straightforward enough. I am going to give it a try when I get home from work.

yotsuya

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Re: Pole Position II -Glad I Didn't Buy a Lottery Ticket
« Reply #10 on: November 06, 2017, 11:20:38 am »
I checked out a video showing how to replace a broken leg. It looks straightforward enough. I am going to give it a try when I get home from work.

It's pretty easy. I've done it before. You should be cool. :cheers:
***Build what you dig, bro. Build what you dig.***

  
 

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