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JAMMA TEST RIG (tv display or old pc monitor)
BobA:
Old NEC multisync II and Old apple monitors will work as well. Check old multisync monitors to see if it works at 15.75 khz.
hayabusa_fmw:
I got one OLD nec multisync 5FG
it had RGB connectors in the back...
but doesn'T seem to work with it
ļI get double image....
I hacked it with ''home made wires..''
to connect it to the back...
Also do i need a AC line filter
because when i tested it
I plugged the AC to arcade power supply
did some wiring for a speaker.
& the rest was all on jamma & connected to PSU aswell.
Is that ok?
or it's dangerous?
BobA:
Nec 5fg only goes down to 27 Khz according to its spec. You cannot get it down to cga freq. A double picture is expected on a monitor that cannot sync low enough.
An ac line filter is recommended but if you have a power bar with a real supressor you can live without it.
hayabusa_fmw:
by supressor = surge protector??
because im using a typical power bar...
it's more or less to test a board 1 hr , or 30 mins , or even less..
i will now hunt a commodore monitor
Is it hard to connect it to the monitor?
do i need to hack wires into it?
let me know never had or seen one upclose.
Angry_Radish:
yeah, you have to hack the wires to build a cable.
Not too hard though, I'll see if I can find the diagram I used...
**edit** Here it is:
----------- Pin out (looking into connector from the outside)
\1 2 3 4 5/
\6 7 8 9/
-------
1 Ground
2 Ground
3 Red
4 Green
5 Blue
6 Intensity
7 N/C
8 Horizontal sync
9 Vertical sync
You shouldn't need to connect pin 6 (or 7).
If the game has combined h/vsync (ie a Csync like all JAMMA boards) then
connect it to pin 8 (HSYNC) and leave pin 9 unconnected.
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