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Title: [SOLVED] Hyper Olympic / Track and field PCB help! Post by: yocke on November 18, 2014, 06:14:02 pm Have an original Hyper Olympic Konami PCB that have been a big burden!
My conclusion is that it must be an power failure of some kind, but I don't really seem to find it! I'm looking for suggestions! The state right know is: http://youtu.be/jnjhqdMdb0o Have tried different power supplies, the one just now is 5v.(7A), 12v (1A), -5 (1A)! Suggestions? [SOLVED] Changed a bad 6116 RAM location A6... Up and running at last!!. Title: Re: Hyper Olympic / Track and field PCB help! Post by: iankellogg on November 18, 2014, 06:24:37 pm Looks like bad roms. I'm thinking bad code roms as it is resetting.
Title: Re: Hyper Olympic / Track and field PCB help! Post by: yocke on November 19, 2014, 03:19:21 am Ian, thanx for fast reply!
Well I have thought in in that as well, any suggestion where to start? The board have allots of roms! Reburn all should take some time! I saw in an Centuri manual that 12v should have 2A!! Anyone know if Centuri and Konami board is the same?? (￣▽￣) Title: Re: Hyper Olympic / Track and field PCB help! Post by: iankellogg on November 19, 2014, 08:23:59 am The boards are the same for sure. It would't hurt to find a better power supply and see if that helps. That seems like a pretty small switcher.
If the power ends up still not helping, you should maybe start serially testing each eprom. If you have a burner or know of someone with one you can just remove one rom at a time and do a rom dump, compare with romident and see if you have any bad ones. Title: Re: Hyper Olympic / Track and field PCB help! Post by: yocke on November 25, 2014, 01:28:29 am Hmmm,
No luck at all,,, but did find a chip with a broken leg.. Takes time to dump, and check each of all eproms,,,!! >:( |