Motherboard HNG 64 with Supergun

Hello there!(First of all,please excuse me for my approximative English)
I have a "little" problem,can be could you help me?I have just acquired of a new whole supergun(Arcade System 3).I decide to test with a pcb,it goes.I pile up again with Atomiswave,there 's any problem.When I arrived at the HNG64,...OUCH!... The screen remains black,finally I manage to distinguish contour from the persos,but I do not.


Please,help me!

For informations,my motherboard is a rev.1,i used RGB connexion,my TV is PAL

What are the specs of the power supply of your supergun? How many amperiums in the 5V and 12V lines can it output?

It's a traditional supergun functioning on 240 volt(European voltage).for the amps,I didn't care

I don't care about the AC input of the power suppy unit, I need to know what it outputs. It's quite likely that it doesn't output enough amps for the HNG64 and that's why you have trouble.

Yes,you are right,the problem come many amps,how could I regularize the frequency?