Need some info on a power supply

SiLeNtNiNjA1

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I am looking at getting -5v into an old Rampage cab (thats been converted to ninja gaiden, and now i use as my generic board-swap cab) and need to know if its possible with the power supply in it. Here is all of the info I was able to get from it :

Power chassis assy # 1255WUR
15v 4amp
A945-00059-0200
M051-00945-A079
 

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if you have the same psu as in the rampage manual, then have a look at the rampage manual, page 54, power supply schematic:

http://pdf.textfiles.com/manuals/ARCADE/K-R/Rampage (3 Player Upright) [English].pdf

according to this manual, there is a 20 pin (?) connector where the 5v and 12v rails are connected, & looks like there is a -5v connector there already, connector J2, pin 1, so follow the 5v wire back to the psu 20 pin connector and test pin 1 for -5v with a multimeter..

hopefully that helps...
 
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