Replaced Defender Old PS with Switching

Zinfer

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Well, the Defender boards are running like champs now. Running a Bob Roberts Defender switching power supply. But my problems stem from the Coin-door ground as well as no lamps. I got this link the other day which I checked out
http://www.arcadesolution.com/ground.html
I ran a hybrid of the two solutions and you can see the results of that on www.zinfer.com/defender.htm.
Last night I cleaned the bezel and put everything back and found I lost ground again.(Something else failed on the old PS) Well, I pulled the old PS altogether and ran a ground jumper from the Switching PS to the orange/black line at pin6 of the connector that normally attaches to 4J3 that leads to the coin-door. The game now works, coins-up and plays. However no +6v to the lamps and no +27v to the coin lockouts. (I don't understand the two +6.3v lines at the connector to 4J3, when I jumper a ground to the white/yellow at pin2 it lights the lamps)(the way this cabinet appears to be wired-the white/yellow goes to the ground and the yellow goes to the voltage of the lamp)
I suppose the next step would be to run a Bob Roberts Deluxe Defender rebuild kit to repair this old PS. I can't even use it as a ground. But that then brings pause to the madness in that that's not why i bought a switching ps only to rebuild the old Defender PS.
Can I run a +5v line from the switcher to the coin lamps? And exactly what do the coin-lockout mechanisms do? And didn't defender have any kind of coin counters?
Is my thinking way off or confused on this or am I very close?
 
Well, the Defender boards are running like champs now. Running a Bob Roberts Defender switching power supply. But my problems stem from the Coin-door ground as well as no lamps. I got this link the other day which I checked out
http://www.arcadesolution.com/ground.html
I ran a hybrid of the two solutions and you can see the results of that on www.zinfer.com/defender.htm.
Last night I cleaned the bezel and put everything back and found I lost ground again.(Something else failed on the old PS) Well, I pulled the old PS altogether and ran a ground jumper from the Switching PS to the orange/black line at pin6 of the connector that normally attaches to 4J3 that leads to the coin-door. The game now works, coins-up and plays. However no +6v to the lamps and no +27v to the coin lockouts. (I don't understand the two +6.3v lines at the connector to 4J3, when I jumper a ground to the white/yellow at pin2 it lights the lamps)(the way this cabinet appears to be wired-the white/yellow goes to the ground and the yellow goes to the voltage of the lamp)
I suppose the next step would be to run a Bob Roberts Deluxe Defender rebuild kit to repair this old PS. I can't even use it as a ground. But that then brings pause to the madness in that that's not why i bought a switching ps only to rebuild the old Defender PS.
Can I run a +5v line from the switcher to the coin lamps? And exactly what do the coin-lockout mechanisms do? And didn't defender have any kind of coin counters?
Is my thinking way off or confused on this or am I very close?

The 6.3V to the coin door lights is 6.3V AC. If you run one of the lines to ground, it will work but is definitely not recommended. If you want the coin door lights, swap the bulbs for LED bulbs and then run them off the -5V output of the switcher.

The coin lockout mechanisms do exactly what the name implies. There is a solenoid on each coin mechanism that is supposed to redirect any coins down to the coin return when power is off on the machine. Most ops bent the solenoids back so that the coins went into the coin bucket whether the machine was powered up or not ("management not responsible for ..."). If the solenoids are not bent back, you can use a rubber band to pull the little mechanisms back and keep the pins out of the coin doors. Then you don't need to power them.

ken
 
Hey thanks man, that helped alot. I wired up a harness from the switcher to interface with the 4J3 plug. Hooked in a ground to the Pin6 Coin door, another to the pin 5 ground and -5v to Pin 6. I stuck with the same bulb though and it seems to be fine. It does kind of bother me though that I can't get 27v to the solonoids. I attempted 12v - but it's just not enouph to drive them.
Game is working beautifully without the original PS installed.
 
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