Arcade Collecting > Restorations & repair
What's my first step? Sinistar - not working
geocab:
As promised, more pics:
The Cabinet
Underneath the CP
Various Monitor Pics
Another Transformer Pic
The Power Supply
The 4116 DRAM chips
Well, looking at the 4116's, it looks like a lot of them have black on their pins from excessive heat. I guess my next step is to order the new 4164's to put in their place. Does the ns rating matter? Obvioulsy the higher the number, the faster they read, but what is the rating that I want or exceed? Once I know if that matters I can either order some of these or check a local surplus store for them. Then I need to make a connector adapter. Not sure how to do that just yet. I read the link and I understand what the diagrams are telling me about what pin does what and goes where, etc., but I have to figure out how to put that in practice. :) I think I need to get some sleep so I can think again. Why do I always buy things toward the end of the week or start a project where I need to go to the store that's closed on the weekends or can't ship 'til Monday? ;D
I checked as many connectors as I could see on the boards and all of them pass for continuity. I'm not sure how to read the voltage at the RAM locations to make sure I have the proper V, any advice? Do I need to take the CB off the door and read from the back side?
The LED I highlighted in my first group of pics lit up with a code of 031. ??????
I'm not sure where to order parts to rebuild the PS, any good suggestions?
Thanks for your help so far everyone!
George
Level42:
OK, we've got a great Wiki here:
http://wiki.arcadecontrols.com/wiki/Main_Page
And here's the direct link to the vedors page:
http://wiki.arcadecontrols.com/wiki/Vendors
Check under parts.
Anyway here are some sources for 4164's:
http://www.arcadechips.com/
http://www.arcadecomponents.com
http://www.coinopchips.com/shop/
I think all thee are members of this forum.
I don't really think the speed thing is an issue, but to be on the safe side, the faster the better. You can't buy them 'too fast'. It's an indication of what the RAM _can_ handle, not what it _has_ to be run on.
If you find any surplus local by all means get it, the more of these available the better :)
I think there were one or two guys here actually selling a ready made connector, and Bob Roberts does too IIRC.
Bob Roberts is also a great source for parts, but he tends to be a bit more expensive with the IC's. You can buy a power supply rebuild kit at him, plus the battery replacement "kit" for the current battery holder. Get that one out first by the way, simply remove the batteries and desolder the holder.
http://www.therealbobroberts.net/
geocab:
--- Quote from: Level42 on February 14, 2009, 06:04:53 am ---OK, we've got a great Wiki here:
--- End quote ---
Yeah, I'm sorry, I'm just really eager to get what I need for this game and I rushed to post before thinking about it. 8) I have found a lot of great info there too.
Also, thank you for all of those links.
SirPeale:
I'm not sure if you've read this yet or not, but the 4164 RAM is not 100% compatible with the Sinistar (or any other Williams) board. You'll either need to modify the board, or use an adapter.
I make the adapters if you're interested.
Get those batteries out of there NOW. Get some vinegar on a cloth and wipe down the area. GENTLY.
The monitor in your machine is a Wells Gardner K4900 series.
THE POKER BRAT:
as far as i can see is that you need to get rid of those 3 batteries fast!!! before the other ones leak and do futher damage,..clean out the battery compartment
and the board, are those batteries regular batteries like duracell?
....then get new ones,..unplug the main pcb, and check the connectons for rust or dirt etc,..check the chips as well for rust,..
replace batteries, replug the pcb/s, and give it a go,...it might just turn on again,.
i dont know,..just my guess,..its the obvious
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