Battlezone Cabaret Voltage Issues

ChanceKJ

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So I've decided to sit down and repair my battle zone cabaret that's just sitting here collecting dust. I'm wrist deep into the schematic but I've kind of hit a wall. Everything on the game turns on and plays fine, except for the monitor. There is no neck glow. I know the monitor works and is fine it's just not getting the right voltage. Sound works, control panel marquee works but the coin door does NOT light up, and I have a red zone board inside. It worked for quite a while before I discovered it playing blind one day.

I've got the power brick out and I've tested all of the fuses as working, however I'm getting some odd voltage readings on the J5 connector compared to what the schematic says they should be…

-Pins 1-3 are 13.01VDC not 10.6vdc
-Pins 6 & 7 are both 17.8vac not 36vac
-Pins 8 & 9 are both dead at 0vac not 6.1vac
-Pins 10,12,13,15 are 29.7vac not 60vac
-Pins 11 & 14 are also dead at 0vac not 60vac

Is this a blown transformer at T1? What else should I be looking at next?
 
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Fixed it.

In talking with Kaworu5 and J'avi on the Overtime Discord we realized its actually a fuse issue.

It was Fuse F6 on the brick, (lol). Once I pulled the fuses and tested them individually outside of the holders I discovered that F6 was blown.

Fuse F6 beeps for continuity across the holder with no fuse in it. Lesson learned, test fuses outside of their holder. lol.
 
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The 6.3v AC circuit is just one big loop of wire. It has continuity through the transformer and the tube.

That's why you can get fooled into thinking those fuses are testing good when they are blown. You're measuring continuity through the rest of the AC circuit.

But yes, always test fuses out of circuit.
 
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lol, thats good to know actually. ☺️

Whats really funny is that I think @Lamonsoff told me almost a year ago to check the fuses when it first went out and I tested them all in circuit then too. 🤣
 
Fixed it.

In talking with Kaworu5 and J'avi on the Overtime Discord we realized its actually a fuse issue.

It was Fuse F6 on the brick, (lol). Once I pulled the fuses and tested them individually outside of the holders I discovered that F6 was blown.

Fuse F6 beeps for continuity across the holder with no fuse in it. Lesson learned, test fuses outside of their holder. lol.
Rookie mistake!!!
 
Congrats on sorting this out. Well done.

If the problem comes back, keep in mind that I've found my Asteroids monitor with no neck glow, and it was cracked traces from the connector from the PS to the connector to the heater.

Hairline crack.

These also get cracks across the traces around the two 3" tall filter caps around their base.
 
I've got the power brick out and I've tested all of the fuses as working, however I'm getting some odd voltage readings on the J5 connector compared to what the schematic says they should be…

-Pins 1-3 are 13.01VDC not 10.6vdc
-Pins 6 & 7 are both 17.8vac not 36vac

-Pins 8 & 9 are both dead at 0vac not 6.1vac
-Pins 10,12,13,15 are 29.7vac not 60vac
-Pins 11 & 14 are also dead at 0vac not 60vac

Is it not frustrating when someone measures AC voltages to GND and get 1/2 the value and then they wonder "why"? LOL :rolleyes:

Is it not frustrating when someone doesn't recognize that a voltage is noted as "unregulated" and it thus measuress slightly higher or lower than the defined value? LOL :rolleyes:

Signed,

Frustrated in Canada 🇨🇦
 
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