iso needed for k7000 in a dedicated Hangtime?

[itsdarkout]

Hi there,

I purchased a dedicated NBA Hangtime in an auction a few months ago. Game worked when I had it in my garage, when I moved it inside the monitor chassis started blowing a fuse. (I took the monitor out before I moved the cabinet inside)

Someone replaced the chassis with one of those wei ya 826HR chassis.

After looking into the monitor more, it appears to be a k7000. 25k7193 to be exact. Definitely, most likely, not the original monitor that came with the game.

I know k7000 monitors require an iso. However, I was under the impression that the "newer" games didn't need one because it was built into the power chassis on the cabinet. Can someone clear that up for me?

Thanks in advance!

Todd

 

[DuffCon]

K71xx monitors for sure need an ISO; Wei Ya 826HR is more or less a clone of the chassis, so yes it needs an ISO.

you can also tell they have the wall outlet's polarity by the wire colors, you'll have black/white ("US spec") or the pink/light blue ("Euro/Japanese spec") whereas a monitor that needs an isolation transformer will have probably 2 wires of identical color. isolation transformers eliminate neutral AC... if you run a "hot chassis" with no iso, I'm led to believe it dead shorts neutral to ground and that's how you wind up with nuked bridge rectifiers.

alas yes, the U2000 and K7400 are both switching mode power supply models.

Mecha says it better

 

[itsdarkout]

Sweet. Thanks for your advice. This cabinet has a white, black and of course ground going to the monitor connector. But since it's a k7000 I should still install the iso?

 

[mecha]

K7000 needs isolation transformer. period. Hangtime should be iso-less, cause Killer Instinct 2 came first and those had the AC distribution blocks as they came with U2000s or Polos (which are both switching mode models that don't need isos). Hangtime was likely the same arrangement for 1996. I've never seen a dedicated one before, at least not inside.

 

[runawayabc123]

The newer K7000s like the K7400 and K7500 don't need an iso. But the K7000 and K71xx do.

Often, the ones the do NOT need an iso trans will have a 3 pin connector for power (hot/neutral/field ground) while ones that need an iso just take a hot and neutral.

 

[mecha]

K7000 has nothing to do with K7400/7500, they're entire different generations of monitor. many people erroneously think because there's a "7000" in their model number that K7400/7500 = K7000. but yes with one of the 3 pin jobs where you have a black/green/white, the hot/neutral polarities do matter. I am uncertain as to what would happen if you reverse them.