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Naomi Freezing
Posted: Tue Jan 13, 2009 2:27 am
by OldFoo
Hello,
Have a Naomi 1 w/ MvC2 cart in it using Capcom I/O.
Lately it's been freezing randomly during play. I really don't know how to troubleshoot that. Memory tests are all normal... it was happening about a year ago and all I did was pull the cart & blow out dust and put it back in... obviously that didn't work a second time.
Any advice?
Posted: Tue Jan 13, 2009 5:29 am
by OldFoo
You may need to adjust your power supply a little higher. I suggest increasing the voltage in small amounts until the problem stops. I also suggest using a voltmeter if you have one to better monitor the adjusted output.
Posted: Wed Jan 14, 2009 2:08 am
by OldFoo
joshua3dg wrote:You may need to adjust your power supply a little higher. I suggest increasing the voltage in small amounts until the problem stops. I also suggest using a voltmeter if you have one to better monitor the adjusted output.
that appears to have worked great. increased both the +5 & +3.3 and it hasn't frozen all day (fingers crossed)
Also managed to find the monitor controls while I was looking for the PSU adjustments
Posted: Wed Jan 14, 2009 7:37 pm
by OldFoo
Freakin wrote:joshua3dg wrote:You may need to adjust your power supply a little higher. I suggest increasing the voltage in small amounts until the problem stops. I also suggest using a voltmeter if you have one to better monitor the adjusted output.
that appears to have worked great. increased both the +5 & +3.3 and it hasn't frozen all day (fingers crossed)
Also managed to find the monitor controls while I was looking for the PSU adjustments
20+ hours later without a freeze. Thanks!
Posted: Wed Jan 14, 2009 8:17 pm
by OldFoo
Its good to see that you have fixed the problems.Well done.
Posted: Wed Jan 14, 2009 8:27 pm
by OldFoo
Glad to see it worked out. :smt023
Freezing problem
Posted: Sat Mar 07, 2009 11:58 pm
by OldFoo
I have the same freezing issue.
Did you make the adjustments on the power supply?
Posted: Sun Mar 08, 2009 7:17 pm
by OldFoo
Yes. When running with the Capcom I/O you are using a JAMMA setup. Those typically have adjustable power supplies.
Check your voltage coming out from the Capcom I/O towards the NAOMI.
If you are at 5.25 or above then back it DOWN. Greater than 5.25 starts frying things as that's the upper max on the datasheets for 5v logic.
If less than that, start bumping it up SLOWLY. No need to go higher than what you need to keep it from locking up.
I've seen NAOMI systems lock up from too high and too low of voltage.
RJ