MAMEWorld >> Hardware
View all threads Index   Flat Mode Flat  

krick
Get Fuzzy
Reged: 02/09/04
Posts: 4235
Send PM
Re: Need a new power supply and possibly jamma harness? Not sure what I have or what to get...
06/28/11 04:57 AM


> This is primarily a MAME cab. I have left as much of the cabinet intact as possible.
> I am using an arcade VGA with a smart strip. So I flip the cabinet switch on and the
> PC and monitor power up. As-of now, the Monitor isn't powering up. I would not be
> surprised if the monitor was dead. I just don't know how to verify that.
>
> Here is the kicker, the last time I used this machine with a jamma board, it made a
> loud cracking sound and blew up IC's on the boards. I've lost two boards this way
> after double checking and everything seeming to be ok. Something must have changed
> when I replaced the monitor chassis, jammas did work at one point.
>
> After hearing that, someone said it war the power supply for sure, so I do want to
> replace it regardless.
>
> Any ideas?

First of all, running a cabinet power supply with no load is a BAD idea. Without a JAMMA board plugged in, that's essentially what you were doing. I wouldn't be surprised if you damaged your power supply. Ultimarc recommends that you disconnect the DC power supply when using a JPAC and ArcadeVGA. Before you connected your JAMMA boards, did you check the power supply voltages with a meter to be sure that they were close to the proper voltages?

Second, looking at your pictures, I'd be leaning toward a failed isolation transformer. It looks pretty rough.

Third, I'm not an expert on any of this stuff so I recommend you post over on the BYOAC forum for some more qualified help...
http://forum.arcadecontrols.com/

I wouldn't assume anything has died until you go through the proper troubleshooting procedures to isolate the real problems.


GroovyMAME support forum on BYOAC







Entire thread
Subject Posted by Posted on
* Need a new power supply and possibly jamma harness? Not sure what I have or what to get... jordanrom 06/27/11 03:04 AM
. * Re: Need a new power supply and possibly jamma harness? Not sure what I have or what to get... krick  06/27/11 03:22 AM
. * Re: Need a new power supply and possibly jamma harness? Not sure what I have or what to get... jordanrom  06/27/11 04:04 AM
. * Re: Need a new power supply and possibly jamma harness? Not sure what I have or what to get... krick  06/28/11 04:57 AM
. * Re: Need a new power supply and possibly jamma harness? Not sure what I have or what to get... jordanrom  06/27/11 04:17 AM
. * Re: Need a new power supply and possibly jamma harness? Not sure what I have or what to get... R. Belmont  06/28/11 06:57 PM

Extra information Permissions
Moderator:  GatKong 
0 registered and 3 anonymous users are browsing this forum.
You cannot start new topics
You cannot reply to topics
HTML is enabled
UBBCode is enabled
Thread views: 3607