ok, Im confused.

Krusher

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ok, Im confused. continuity from right channel + and left channel+ Neo 29 WTF??

I cut off the switch wire which goes from neo harness and the End speaker to switch.
I put my multi meter to verify im on the right wires and double check.
HERE IS THE KICKER. I get continuity from Right speaker + pink wire and yet ALSO the left?!?! I dont see where the wires cross over. or any where that they join?..
am I just friggin nuts?
Should there be NO continuity from Right speaker + and left speaker + ??
 
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Depends. Some amplification is done through a transformer, so there would be continuity.

And I can't remember whether or not a speaker would show continuity from one terminal to the other. Since one side can be hooked to ground (for some games) then I'd guess it should....
 
Well

I dont think the neo 29 has any amp though. Yes they do share a common ground.
Im just starting to remove the switch and testing as i go along.
I really dont wanna Fark up my own cabinet..
So call me paranoid but im checking EACH step of the way.


Depends. Some amplification is done through a transformer, so there would be continuity.

And I can't remember whether or not a speaker would show continuity from one terminal to the other. Since one side can be hooked to ground (for some games) then I'd guess it should....
 
Not paranoid,just thorough! I'd do the same thing! Better to do that and be safe than frying something and saying lots of four letter words.
 
yea but

It still seems VERY odd to me...
A common connection from right channel to left channel + ??
I just cut rest of switch out. SO... Im going to re test and see..
Just seems ODD.. Yes I guess a common ground would do it.
BUTTTT... there is NO amp. and I did not take any classes on audio. but Im also confused i thought the connection on the speaker material was NON conductive?.
I dunno. Wish Me luck i guess..
AND the -5 V was wrong connector type and i bought 3!!
Grrr..
Not paranoid,just thorough! I'd do the same thing! Better to do that and be safe than frying something and saying lots of four letter words.
 
Wow...I think I understand what you're saying....and have an explanation..I think...

If you still have the speaker grounds connected, then *technically* the two pluses would be connected together by the ground, THROUGH The speaker. Speakers show continuity since they are just a coil of wire inside. If you put a meter across the plus and minus of a speaker, you will get a dead short. Doesn't mean its shorted, it just works that way.

GND<--------{Speaker}+-----------
|___________{Speaker}+-----------

In the above scenerio, if you put a meter across both pluses, they will show continuity, because the grounds are still connected together.

Make sense? If you don't understand, just unhook one of the speakers completely, and the continuity between the two pluses will go away.
 
ok cool.

Ok, Cool. So its fine, I can solder those back together.
Now Im trying to sort out this damned test switch and it going to #15 on the NEO connector. Not sure if its normally used on this cab. Looks like it was wired in as the test switch when in jamma mode,
I also want to make sure the service and test switches are right though.
Damn so close but to yet verify
Wow...I think I understand what you're saying....and have an explanation..I think...

If you still have the speaker grounds connected, then *technically* the two pluses would be connected together by the ground, THROUGH The speaker. Speakers show continuity since they are just a coil of wire inside. If you put a meter across the plus and minus of a speaker, you will get a dead short. Doesn't mean its shorted, it just works that way.

GND<--------{Speaker}+-----------
     |___{Speaker}+-----------

In the above scenerio, if you put a meter across both pluses, they will show continuity, because the grounds are still connected together.

Make sense? If you don't understand, just unhook one of the speakers completely, and the continuity between the two pluses will go away.
 
Neo Geo cabs are 90% Jamma...you def want the test switch as that adapter will take advantage of it. There's really only a few pins on the neo harness that aren't proper jamma, the key ones being audio.

You can find both pinouts here to compare:
http://hyperfireball.tripod.com/faqs/pinouts.txt

Edit: If you look, the audio, test switch, and coin up pins for coin #3+#4 are whats different from Jamma. You're wiring it to be factory Neo Geo so you can use either a Neo Geo Board or the Neo Geo to Jamma adapter, correct?

PS -Normally I'd stay up and help but Im not feeling well so gotta hit the sack. Sorry!
 
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right now

Damn well get better =-)
right now im just trying to figure out pin 15 coin switch used or not?
cause i got everything else traced (im removing a switch which someone did a bad job at making mvs jamma
I already have an adapter so im restoring to factory.
And as for now I have what appears to be both sides of test switch
Audio left and right. but lonely wire coming from connector for 15 Coin switch #3 P1 was tied into the switch without a final mate
So im assuming this was only hooked up for the use as test on the Jamma side (when switch was in)

Neo Geo cabs are 90% Jamma...you def want the test switch as that adapter will take advantage of it. There's really only a few pins on the neo harness that aren't proper jamma, the key ones being audio.

You can find both pinouts here to compare:
http://hyperfireball.tripod.com/faqs/pinouts.txt

Edit: If you look, the audio, test switch, and coin up pins for coin #3+#4 are whats different from Jamma. You're wiring it to be factory Neo Geo so you can use either a Neo Geo Board or the Neo Geo to Jamma adapter, correct?

PS -Normally I'd stay up and help but Im not feeling well so gotta hit the sack. Sorry!
 
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If you only have 2 coin slots then no pin 15 wouldn't go to anything. On the JAMMA connector, yeah that would be a test switch but if you're wiring it for Neo Geo pinout, then the test switch goes to pin K.

Pin 15 and O on the Neo Geo connector wouldn't have anything if you don't have a #3 or #4 coin mechs.
 
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awesome!

awesome then I only have one slot :)
(its a NEO 29 candy, Though metal unlike most candy cabs =-)
But thats awesome to hear. I think next is soldering iron and shrink wrap time..
Woohooo.. And ill test it with my part time working one slot board so if something is wrong i dont smoke my 4 slot Motherboard.
And One more question you know where to get the ENDS they use on the neo 29 candy cabs some funky square ones..
The -5 volt i bought from bob roberts I missed in the picture and didnt know the connection would be round..
So when i poped off the connector WAS i suprised!!!!
3 -5 wires i bought and wrong connector lolol

If you only have 2 coin slots then no pin 15 wouldn't go to anything.
 
awesome pin outs

Awesome pin out list btw!!

Neo Geo cabs are 90% Jamma...you def want the test switch as that adapter will take advantage of it. There's really only a few pins on the neo harness that aren't proper jamma, the key ones being audio.

You can find both pinouts here to compare:
http://hyperfireball.tripod.com/faqs/pinouts.txt

Edit: If you look, the audio, test switch, and coin up pins for coin #3+#4 are whats different from Jamma. You're wiring it to be factory Neo Geo so you can use either a Neo Geo Board or the Neo Geo to Jamma adapter, correct?

PS -Normally I'd stay up and help but Im not feeling well so gotta hit the sack. Sorry!
 
If you're talking about in the connector that goes to the board, they're called "Trifurcon" pins - jammaboards has em and so does Bob Roberts.

The pinouts aren't mine but an old bookmark I saved from something. Have fun and just double check everything before you fire it up!
 
not quite

Almost.. But no the connectors which are above the power supply..
Their like the MOLEX style but a SQUARE one... not the Neo/jamma side..
those looked ok.. its the main connection side which appears different. Some square probly japanese model or something.. But the one i got from bob roberts was round and its a square one.. Sooooo, i dunno, Its mabey a neo CANDY Cab thing.. instead of standard NEO

If you're talking about in the connector that goes to the board, they're called "Trifurcon" pins - jammaboards has em and so does Bob Roberts.

The pinouts aren't mine but an old bookmark I saved from something. Have fun and just double check everything before you fire it up!
 
i should double check

Yup, I think im good, havent tested it yet, cleaning some then appt to go to.
but will probably when i get back.
spiffin up kitchen for now :)


If you only have 2 coin slots then no pin 15 wouldn't go to anything. On the JAMMA connector, yeah that would be a test switch but if you're wiring it for Neo Geo pinout, then the test switch goes to pin K.

Pin 15 and O on the Neo Geo connector wouldn't have anything if you don't have a #3 or #4 coin mechs.
 
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