West
Mr. Big's Thug
- Joined
- Mar 3, 2014
- Posts
- 205
Hey guys,
So I got one of those el cheepo fully loaded jamma extenders from Ebay so I could connect boards outside my cab.
http://www.ebay.com/itm/Full-Jamma-...903108?hash=item58ca76c404:g:gfoAAOSwyQtVwqky
I had a look at the past posts on jamma extenders and taking a note from Lemony and James, I replaced all the spaghetti-thin +5v, -5v, +12v wires with some 14g wire hoping that would be better for power to the pcb.
All the individual pcbs I try work with the extender just fine: cps1, Cave (68000 and CV1000), etc. However cps2 doesn't want to work. I connect the jamma extender, flip on the cab (Egret2), and I hear the fan on the A board come on but I get a black screen.
Voltage coming across is 4.75v which seemed a bit low to me, but when I connect the A board directly to the cab without the extender, I get around 4.75v but the game starts up just fine.
I'm considering getting a better made extender from Bob Roberts, but before I go down that road, I figured I'd ask the experienced brains here if they had any ideas as to what the issue could be. Should I replace the grounds with 14g wire as well?
Thanks in advance to anyone with thoughts or suggestions.
West
So I got one of those el cheepo fully loaded jamma extenders from Ebay so I could connect boards outside my cab.
http://www.ebay.com/itm/Full-Jamma-...903108?hash=item58ca76c404:g:gfoAAOSwyQtVwqky
I had a look at the past posts on jamma extenders and taking a note from Lemony and James, I replaced all the spaghetti-thin +5v, -5v, +12v wires with some 14g wire hoping that would be better for power to the pcb.
All the individual pcbs I try work with the extender just fine: cps1, Cave (68000 and CV1000), etc. However cps2 doesn't want to work. I connect the jamma extender, flip on the cab (Egret2), and I hear the fan on the A board come on but I get a black screen.
Voltage coming across is 4.75v which seemed a bit low to me, but when I connect the A board directly to the cab without the extender, I get around 4.75v but the game starts up just fine.
I'm considering getting a better made extender from Bob Roberts, but before I go down that road, I figured I'd ask the experienced brains here if they had any ideas as to what the issue could be. Should I replace the grounds with 14g wire as well?
Thanks in advance to anyone with thoughts or suggestions.
West