Testing voltages on boards!

Just finished this blog post up, covers the basics of testing voltages on game boards:

http://blog.collectedit.com/post/20...powered-arcade-game-Test-those-voltages!.aspx

Anthony

Nice.... thanks! I've bookmarked it for when (if) my confidence/ability reaches that level! I'm a computer geek (built a mame cabinet about 10 yrs ago - still going strong), but have just stepped foot into the "real" thing with my Tron upright acquisition, so I don't know much at this point, but enjoy reading all about it!
 
Nice!

The safe range for standard logic is 5.0v +/-5% which is 4.75 to 5.25 volts.

With that said, the Sega Naomi systems should NEVER be above 5.1v. When the voltage approaches 5.2 the tiny surface mount buffer chips on the cartridge will be damaged resulting in issues such as crashes, random lockups, and random reports of chip failures when running diagnostics.
 
Thanks, I'll update the article to note the safe range and for the Naomi info.
 
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