| Arcade Collecting > Restorations & repair |
| Atari Centipede Cocktail table game has no power |
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| vapuser:
This pic below shows the bottom of the PCB board. Do you happen to know what that Reset button at the bottom of the board resets? It also look like another connector at the bottom of the board. I wonder if that's used for test connection of some sort. There was no connection to it inside the console. Any ideas? |
| bperkins01:
Well - all your problems (for now) are on the ARII board. I've been advised to pretty much always replace Q3 - 2N3055. It runs the hottest, does the most work and is most likely to fail. If you notice runs all of the +5v circuits that feed the PCB. There are many youtube videos on transistor testing and I'd target that one to see if it shows bad - then replace it anyway. After that - the LM305 is the next likely part to be bad causing no +5. https://www.arcadepartsandrepair.com/store/integrated-circuits/voltage-regulators-integrated-circuits/lm305ah-voltage-regulator/ When I ordered my 2N3055 - I got a LM305 and put it on the shelf (shipping savings). You should get both from above. Word has it there are many crappy Chinese ones and you want a good one. (no personal experience honestly - but I agree with the sentiment). If you replace that - you will likely be back in business. Good digging!! It took me a while to realize there are *many* power supplies inside this machine - not just a power cord in and lots of outputs. (ex: the -5v comes from a small voltage regulator chip, on the PCB +15V comes from yet another voltage regulator chip) Getting very close... |
| Mike A:
Now we are getting somewhere. Get that AR II functioning. If it is too difficult there is a guy on KLOV that fixes them and sells them. bperkins has done a lot of work on his Centipede. Follow his advice. It will be cheaper and more satisfying if you complete the repairs. You are doing a good job so far. Keep up the effort. |
| jennifer:
I dont know about satisfying it could be, I got holes burned in all my dresses, got fried my hair one day, burnt fingers, Late night sleepless stress if something goes wrong if it doesn't work. |
| Mike A:
Is there a sentence somewhere in that mess? |
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