Older gameking Troubleshooting question

[Tony5555]

I have an older gameking prod date 11/96 model number XA97D
I have not powered up the machine for a year until last night and I powered up the machine and the screen says non recoverable error turn key switch to clear then I turn turn key switch and the screens hold test button down for 2 to 3 seconds and then the screen says intailizing game please wait and you can here the bill validator and nothing it just goes back to intailizing game please wait and bill validator  powers up. Can anyone please help me out and let me know what I can do to fix it? Here is info from the board assy number 7570380 it has a intel I. 960 chip and a Xilinx chip i know its an older board it has a key you put in the board and turn to lock the board. Any help would be greatly appreciated  Thanks Tony

[kforeman]

continuous reboot loop on a GK is often the DC switching power supply.  pull it out, open it up and looked for capacitors with puffed up tops.  caps are pretty inexpensive and are high failure parts so we just change all of them when we're rebuilding a power supply; also even if there are some that aren't puffy it doesn't mean they aren't bad.   if you can solder you can probably fix it for under $20 yourself.  i recommend mouser.com or digikey.com for caps and all other electronic components. g/l