The Aussie Pinball Arcade
Aussie Pinball Forums => Technical Matters => Pinball Repairs / Problems & Assistance => Topic started by: Klondike on May 01, 2017, 02:01:16 PM
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Hi.
My Close Encounters pinball is set up with a credit button added to the front. This will add credits but the start button won't start the game like it should. I don't have the manual for this game and would appreciate anyone's help; especially how to set the dip switches and what's what on the driver board. All the tilt switches are correctly set up and the game has been repinned and rechecked and it was playing fine. All the fuses are okay as well.
Thanks.
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Does the 'game over' relay under the playfield remain locked on until the credit button is pressed?
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Quoted from http://www.pinrepair.com/sys1/ (http://www.pinrepair.com/sys1/)
"Every System1 pinball has two relays mounted under the playfield. These are the Game Over Relay (Q), and the Tilt Relay (T). The Game Over relay activates and stays energized all during a game. This turns the 24 volt power on for the flippers, pop bumpers and slingshot coils. It also turns off the Game-Over light in the backglass."
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On the power supply board, I'm not getting the -12v reading from the top right pin. The two left pins are reading 10v.
The right side pins are reading 134.5v and 94.9v for the top two and 7v and 17.8v for the bottom two.
On the cpu board I'm getting 10v and 26v where I should be getting 5v and -12v. Would the voltage be double because of our 220v instead of 110v?
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Can you confirm the AC input voltage on the power supply board? - At connector J1, probe pins 1 and 2 (leftmost pins) using AC volts setting on meter. (Doesn't matter which probe goes to which pin). Should be around 115 Volts AC.
If it's closer to 240volts you may need to reconfigure your main transformer for 240 volt operation.
See image below for transformer setup.
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Yeah I'm not sure how to test the voltage at J1 as i'm getting 11 volts at the first two pins. That's with all three connectors and power on. I think the fact that I don't get -12v at far right pin of J2 is a worry. A startup video I watched mentioned that but didn't say what would be the cause. My power supply board was rebuilt in November 2015 and the machine is an Australian Delivered one.
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your readings seem ok.
We're actually looking for 11.5 volts not 115.
Sorry for confusion.
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Pins 4 and 5 on same connector should be around 14 volts AC.
This voltage ultimately becomes the -12 volts DC logic power.
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That's where the problem lies...pins 4 & 5 read 0 on both
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That's where the problem lies...pins 4 & 5 read 0 on both
Just to clarify your results;
with meter set to AC volts, one lead on pin 4 and the other on pin 5 gives a zero reading?
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I checked again and with the lead on and power on I get 26v at pin 5 and 0 at pin 4. With connector off and power on 0 at both.
I noticed that after the 5 sec delay on startup, the 'ball in play' light is displayed and not the game over light??
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I checked again and with the lead on and power on I get 26v at pin 5 and 0 at pin 4....Snip
Not sure how you're getting the two different readings as there is only one test, which should give you just a single result.
Try this.
With power on and connector attached to J1, probe the red lead to pin 4 and at the same time the black lead to pin 5.
Meter set to AC volts should give you a single reading in volts AC. (See diagram below)
No probe should be connected to any ground.
With connector off and power on 0 at both....Snip
This connector brings power to the board, so a 0 value would be expected when it is not connected.
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I get a zero reading. What about the ball in play light being illuminated and not game over before the game starts?
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I get a zero reading. What about the ball in play light being illuminated and not game over before the game starts?
The 14 volts comes directly from the small transformer on the base board. I would be surprised if this is actually zero. (though it is possible if the transformer is shorted).
Can you check AC volts at the unplugged connector (J1), pins 4 and 5, to see if any volts are present.
Not really sure about the ball in play light.
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Still getting a zero reading with game turned on and the J1 connector removed.
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Thanks for the pics.
Sorry for not explaining very well but I was wanting you to probe the connector pins rather than the headers on the board.
This board will have absolutely no power coming to it when J1 is disconnected.
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Oops, sorry about that :)
I get a reading of 29.3 Volts
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With all your voltages being approximately doubled, makes me again query the configuration of the transformer.
Can you compare the wiring to the image below to see if it is set up for 110 or 240 volt operation.
Edit:- Might help to post a picture of your transformer's wiring on the input side.
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Here's the front and back of my transformers... It was a local Brisbane arcade machine so should be 240v. (https://uploads.tapatalk-cdn.com/20170508/20a7535505f7d0bbaafcf5a3187c19bb.jpg)(https://uploads.tapatalk-cdn.com/20170508/d45a505f7eee9b39427800530ac14238.jpg)
Sent from my A1601 using Tapatalk
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In the first picture you have a brown wire on bottom LHS. Looking at this, it looks like it MAY be touching the mounting nut on the transformer. If any of the non insulated part is touching this nut then you are running this voltage to earth and it could be what's throwing your values out. If you lose COMMON ( this is not zero volts but a reference voltage that all others are differenced to) then ALL your voltages will be way off.
Slim chance but worth a go..
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Thanks for that Retropin. It would've been nice if that was it but it was just a bad camera angle. That wire is well away from the nut. Before my game stopped working, it used to do things like resetting drop targets and scoring wildly and I'd give it a bump during play and it would fix itself. Then I found a wire had come loose on the powerboard and off A3 J2 so when I repinned them, I thought it'd be alright but then it wouldn't start at all. ^&^
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Are you sure when you repinned that you didn't short 2 out?
Also, what was the wire that came loose on the power board.. didn't you say that this had been rebuilt?
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It's possible that another wire was shorted...the wire was to the power supply that came loose and was the 7th on connector A2J1. The power board itself was rebuilt Nov 2015 and has no loose wires.
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Here's the front and back of my transformers... It was a local Brisbane arcade machine so should be 240v.
I see that space is limited but would it be possible to get a better "front on" photo of the small transformer input side?
I would assume that it is correctly configured, being a local machine but I can't figure how the voltages are so high straight from the transformer.
Edit- Also would you mind confirming the other two AC voltages at the unplugged J1 connector. Pins 1 and 2 should be around 11.5 volts AC (you previously stated you got a reading of 11 volts). Pins 6 and 7 should be around 69 volts AC.
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Is the input side the side that faces the side of the machine or faces the bottom board?
With red lead in 1 and black in 2 it reads 24.4 volts
Red lead in 6 and black in 7 = 74.6 volts
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The input is facing the side of the machine and shown in your second photo.
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The input is facing the side of the machine and shown in your second photo.
Here's some more pics. (https://uploads.tapatalk-cdn.com/20170509/726f471d900ca60faf237f831de1f23a.jpg)(https://uploads.tapatalk-cdn.com/20170509/06bdfae0d09030d7778cf844b69c2b0e.jpg)
Sent from my A1601 using Tapatalk
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I've found a better schematic for the base board/transformers.
Might be easier to match up with your wire colours.
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Here's some more pics.
Appears to configured correctly for 240 volt operation.
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Running out of ideas here, but can you post a clearer photo of your J1 connector (showing wire colours) when you get a chance.
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Hope these are better (https://uploads.tapatalk-cdn.com/20170509/36d4c2cd7939a84c5d1c265757d497b7.jpg)(https://uploads.tapatalk-cdn.com/20170509/03ad9744b105fcca29a76f0d22d00d53.jpg)
Sent from my A1601 using Tapatalk
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Yeah, that connector looks perfect. Bummer!
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Oh well...it had a good run.
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I wouldn't give up on it yet.
I'm on holidays starting Monday and will arrange a visit,(maybe Thursday) to have a better look, if you're still interested.
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No worries Mate...you're welcome anytime!