Pole Position power problem

Dantebean

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Well found a burnt up wire and fuse at F3 (20 amp). What exactly does that F3 do? Powers the board or monitor? I get no sound and no picture.
 
I don't have the time to type much here. Just keep searching. This is a very common problem out there and there's no super easy fix, there are also multiple fixes out there.
 
Help! I replaced the burnt wire, 20a 32v fuse and this board on the back started smoking! What is going on? **update** needed cleaned. Noticed after I took picture. Power is on and still nothing. No picture, no sound. Marquee and coin slot lights work.
 

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Well I give up tonight. Got the marquee and coin box lights on and some hum to the monitor. Might be a bad board. The red light on the board is on but nothing happening. Multimeter checks tomorrow.
 
Help! I replaced the burnt wire, 20a 32v fuse and this board on the back started smoking! What is going on? **update** needed cleaned. Noticed after I took picture. Power is on and still nothing. No picture, no sound. Marquee and coin slot lights work.

When the AR board starts to smoke, that means you have poor sense line connections back from the game PCB.

I would suggest:
1) Buy an ARII rebuild kit and completely repair the smoking board. Make sure all of the header pins on the board are corrosion free and have not heated up (look blackened).
2) Unplug the game board and examine the edge connector pads to make sure they are not burned or corroded. Clean and fix as required.
3) Make sure all of the pins in the wiring harness connector (the one that connects to the game board) are in good condition. If they are burned, corroded, or not making good contact, you will continue to have problems with the AR board.

There are lots of failure points on Pole Positions, but if you take your time, you can make the game much more reliable.
 
Well found that the video board wasn't getting power. Tracing the pinouts for that board and multimeter tests. Will be following technoboy's video to bypass ARII boards and F3 fuse repair.
 
Oh boy! We are getting there. Now I got this on this monitor but nothing else! Time to clean up the board and more testing.
 

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Well video board and main board look fine. Trying to find out why screen is locked with that scrambled screen. Now cleaning power supply.
 
Make sure the interconnect board that connects the main board and video board is clean and tight. Those edge fingers might need cleaning also.
 
If you haven't yet, you might verify that you are getting the full 5V on each board. Ideally, you should measure 5.0-5.1V at the test points on both the CPU board and video board.
 
I'm new to this, what setting on the multimeter and where do I place the testers on the board? I have cleaned the interconnect.
 

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I'm new to this, what setting on the multimeter and where do I place the testers on the board? I have cleaned the interconnect.
DC volts (V with the straight lines next to it) in the 20V range. The CPU and video boards have test points on them near the connector, which is where I attached the jumpers in my video. They are quick connect lugs, and they are lableled +5 and GND if I remember right. Red lead on +5, black on GND. If you are lucky and everything is working right, the voltage can be adjusted with the little adjustment screw on the ARIIs, one board does the CPU and one board does the video.
 
I'm new to this, what setting on the multimeter and where do I place the testers on the board? I have cleaned the interconnect.

at about the 2 o'clock position there is the 20 volt dc. Put black to ground and probe the chips with the red lead. should be +5 on most of the 16 pin chips.
 
Is R29 resistor burnt on the AR board? Thats the +5 sense line. Dirty edge connectors causes it to turn up the voltage which then causes R29 to smoke.

Clean the edge connectors real good, replace the pins in the connector.

Also remove the boardset, and clean the edge connectors on the side with the small interconnect board on it.
 
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