Arcade Collecting > Pinball
*Fixed* Need Help With Gottlieb Sinbad
urbecrisch:
As far as I know all ground mods were done. The fact that the Ni-Wumpf board is getting no power has to be the problem. The power supply was not replaced but I do recall the gentleman who repaired it years ago replaced the known capacitor issue. Once I find my multi meter I will check the fuses. I will also clean the connectors again and see what happens.
urbecrisch:
Tested the fuses and they all seem to be functioning fine. According to pinrepair.com I tested the voltage coming from the transformer to the power supply board. All volts tested fine except for the last 2 wires which tested only about half of what they should have (35v instead of 69). Any reason for this? The power supply board is hot when I touch the back as well.
A2-P1 pin 1 = 11.5 volts AC (wht/blue). LEFT MOST PIN.
A2-P1 pin 2 = 11.5 volts AC Return (wht/org)
A2-P1 pin 3 = common (ground, black)
A2-P1 pin 4 = 14 volts AC (wht/brn)
A2-P1 pin 5 = 14 volts AC (wht/purple)
A2-P1 pin 6 = 69 volts AC (blue/wht/red)
A2-P1 pin 7 = 69 volts AC Return (org/wht/red)
urbecrisch:
After more research I was told that the 35 VAC reading I was getting on the 2 pins was sufficient as the 69 V should not get to the CPU. I did check the power out of the power supply board and found that the -12 DC is showing but I was only getting a +1 instead of a +5. I think I will go ahead and just get a replacement power supply from Rottendog or GPE. In the meantime I will shop the game out to make it look as pretty as it can.
Ken Layton:
The modern System 1 replacement power supplies are sooooo much better than the original power supply.
urbecrisch:
Ken, I have heard that from multiple members on the forum. Since all fuses are good and I'm not getting +5 out of the power supply it is time for an upgrade. I just hope once I get the replacement nothing else is wrong. I'll post once I get it installed. Just hoping the driver board isn't damaged... All ground mods mods were completed in the past including bypassing the slam switch. It needed a good cleaning anyways, especially the rings since it sat for so long most were cracked. One question about the upper rubber rebound. Looks like a new one came in my ring kit however the old one seems to have been welded in or something. The old one is not being held in with a screw or anything... not sure how to swap it out?
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