Swapping SEGA power supplies into different candy cabs - understanding the issue (Blast City)

[GhaleonUnlimited]

So I fried my Blast City PSU (400-5325-01, for Jamma + JVS), and I've been going crazy trying to figure out how to fix or replace it, since I'm just learning all this :/

I've read that replacing a Blast PSU with another machine's PSU is a huge amount of work, but please help me understand why I can't take the below PSU and use it in my Blast City. Dispell my ignorance!

The pintouts seem mostly identical across AC In, AC Out, Primary DC, and Secondary DC.

The JVS 3.3v connector is physically different on mine vs. the one below, but that would be easy to make my own connector for just that, and I don't need that to play just JAMMA games anyway, right?

Thank you, this would take a huge load off my mind!

Below is my Blast City's pinout and connectors:
Apologies to those with dark theme, I C&P'd it from this site herer SupplyFor the Astro and Blast City cabs, the power supplies didn't change much. The Net City and Naomi cabs were very different.

AC Input​

Frame Ground	N/C	Demag
Frame Ground	N/C	N/C
Frame Ground	N/C	Demag
N/C	N/C	N/C
AC Neutral	N/C	AC Live

AC Output

AC Live	N/C	AC Neutral
AC Live	N/C	AC Neutral
AC Live	N/C	AC Neutral

Primary DC

+12V	+12V	+12V
Ground	Ground	Ground
+5V	Ground	Test
+5V	+5V	+Speaker In
-5V	+5V	+Speaker Out
Service	-Speaker In	-Speaker Out

Secondary DC

+5V	+5V	+5V
+5V	+5V	+5V
Ground	Ground	Ground
Ground	Ground	+12V

 

[GhaleonUnlimited]

I could find no info on this on any forums, so I just bought this a different model for my blast City after seeing that the outside 3rd DC connector ON THE PCB and not on the outside of the PSU matches the Blast City connectors .

This is a 400-5330-01, eBay seller said from a racing game but I'm not sure about that .

It's not physically made for the space but all I have to do is increase the length of the fan cable . Powers my Jama and also Powers my naomi.

So it seems like model 3 / X City machines are likely compatible ? Unsure about Model 2.

I have a Lindbergh PSU coming as well I'll see if this can be plug n play

 

[Clucas79]

I have a working Blast City power supply for sale

 

[GhaleonUnlimited]

Thx , I got another model 3 PSU variation for 100 shipped and with a longer fan cable it works ! And hopefully we are fixing my old power supply