Turtles in Time 15B Bad?

Ghostnuke

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I have a TiT board that was working fine, but with 2 player roms. I swapped it over to the 4 player roms and now it won't boot past the rom check. It says that 15B is bad. Did I do something wrong, or do I need to replace that little chip at 15B? Where would I get one?
 
Answered my own question. When you swap the roms, you have to hold the test button down when you power it on the first time.
 
I have a TiT board that was working fine, but with 2 player roms. I swapped it over to the 4 player roms and now it won't boot past the rom check. It says that 15B is bad. Did I do something wrong, or do I need to replace that little chip at 15B? Where would I get one?

Wow I have same problem after swapping Asian roms for USA 4p roms. I just searched "bad 15b" I can't wait to get home tonight and try holding the test button while I power it up. Thanks for the info.
 
You guys rock! This post saved me from spending tons of time debugging the rom error. This is exactly why I donate what I can to support the forums.

Thanks!
 
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