Ibara Black Label hardware issue?

Battlesmurf · Post by **Battlesmurf** » Fri Dec 28, 2007 9:37 pm

Hello!

I was selling an Ibara Black Label here- the thing has been powered on once (when I got it) and has sat in the box for the last several weeks. I technically already sold it. Before packaging everything up- I wanted to get a game in and make sure everything was on the up and up- and now I'm not getting a picture on it (no sound either). I don't want to have to back out of a business deal- and maybe my cab has something wrong with it- but other boards are working fine (and this one doesn't work in the other cabs). Anybody have any ideas?

I'm located in the US (California)- but if it means I can make the buyer happy I have no problem mailing this PCB away (rtw?) if I can get it fixed.

Radiant · Post by **Radiant** » Fri Dec 28, 2007 10:44 pm

What's about the LED's on the board?

IIRC when you power up the PCB , a LED should light up somewhere at the center of the board, and after a few seconds this should go out and another LED near the Jamma connector should light up and stay lighted

rtw · Post by **rtw** » Sat Dec 29, 2007 12:02 am

Check voltages and connector alignment...

rtw

Battlesmurf · Post by **Battlesmurf** » Sat Dec 29, 2007 1:10 am

no leds light up at all. Tried it on several cabs, no dice. Any specific place on the board to check voltage?

Radiant · Post by **Radiant** » Sat Dec 29, 2007 8:58 am

http://www.arcadetreasure.com/techinfo/jamma_pinout.gif

take a voltmeter and measure between ground and +5V ( i would do it without PCB , just the jamma connector) 4,95-5,1V should be ok

rtw · Post by **rtw** » Sat Dec 29, 2007 10:53 am

Battlesmurf wrote:no leds light up at all. Tried it on several cabs, no dice. Any specific place on the board to check voltage?

Got any other SH3 PCB's which work OK ?

Sometimes and I stress sometimes the load of the PCB is too
low for the switching power supply to start up. This is typically
a problem if you have a switching PSU for the PCB and the monitor
is connected directly to the mains.

Do other PCB's work in the cab ?

rtw