Author Topic: Help trouble shooting My old machine  (Read 5955 times)

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Offline MCrysdale

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Re: Help trouble shooting My old machine
« Reply #45 on: December 24, 2016, 11:19:31 AM »
Thanks for the input guys.  Everyone on this board is always so helpful! 

I watched the video (great video)  and believe I did everything he mentioned originally. I'll try re-seating the PC board at the back of the yoke and maybe hit the side of the cabinet to see if the monitor flickers.

This is all I did since receiving the re caped monitor boards.

1--I reconnected the 4 pin ribbon cable that goes down to the circuit boards. 
2--I connected a 2 pin connector that i believe is the degassing wiring
3--I connected another 4 pin connector that had similar circular pins to the board.
4--I put the board on the back of the yoke to the monitor and connected a grounding wire to it.

once I put the monitor back in I.....

A--Connected the speaker back up
B--Plugged the power back in:)
C--Plugged an unidentified double wire to the PC board that i had previously labeled

I'll figure out the jump issue once I get the darn monitor working??
« Last Edit: December 24, 2016, 02:50:25 PM by MCrysdale »

Offline Rolledcigs

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Re: Help trouble shooting My old machine
« Reply #46 on: December 24, 2016, 06:30:19 PM »
does the background music play?
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Offline MCrysdale

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Re: Help trouble shooting My old machine
« Reply #47 on: December 24, 2016, 06:44:05 PM »
The intro music plays and then the game starts and you hear the squeaky shoe running with the 7 note loop background music,  but nothing when you his the jump button.
 

Offline Rolledcigs

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Re: Help trouble shooting My old machine
« Reply #48 on: December 24, 2016, 11:26:24 PM »
i think the analog sounds have a capicator for each sound on the board. so it could just be a bad cap. I'm not a scientist though so someone else should confirm.
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Offline YesAffinity

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Re: Help trouble shooting My old machine
« Reply #49 on: December 26, 2016, 07:11:16 AM »
Can you post a pic of your power supply?  With a 4-board set, all available connections should be populated, including 9P SOU, which is unused for 2-board sets.

You did plug the monitor into the 100V outlet within the cab?  And, you also have the marquee light plugged in and the marquee light comes on (or failing that, have tested to confirm there is 100V at the outlet)?

As for jump, on the wire loom that interfaces the controls to the cab, pins often become flakey on the male side of the connector.  When I bought my red cab, 'up' wasn't working.  That pin is no longer firmly seated in the male connector, and when plugging it into the female side, the pin for 'up' pushes out of the male side.  Manually pushing it back in fixes the problem.  There was also some jankiness with the grounding for the CP harness, which I don't remember the exact details of, but cleaned up by installing a quick disconnect to interface the CP to the cab at the same location as those male/female connectors.  Grounding for 'jump' would be something else worth checking.
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Offline MCrysdale

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Re: Help trouble shooting My old machine
« Reply #50 on: December 26, 2016, 04:22:10 PM »
Hey YesAffinity,

I have the monitor plugged into the 100 volt socket in the cabinet (never a straight 120 wall socket).  The marquee light works (did replace the bulb with a LED fixture).  I'll check it it's actually putting out 100V.

Here is a picture of the power supply.

I'll look at the pins on the cable for the jump issue, good tip!


Offline YesAffinity

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Re: Help trouble shooting My old machine
« Reply #51 on: December 27, 2016, 09:01:43 AM »
Looks right as far as the power supply goes.  I meant "7P SOU", not "9P SOU".  :P

I wasn't aware LED's could replace the originals.  Is it a 100V LED, or how exactly does that work?  Good to know, either way, but I would like to be more informed on that piece of it, if you would share.

I would also suggest checking where the monitor power cord is soldered to the chassis, in addition to testing for 100V at the outlet.  Check to make sure it is firmly soldered to the chassis, you don't have cold solder joints, etc.
Matthew 21:22

DK Arcade PB (verified): 970,200 KS
DK Start PB (verified): 126,600
DK L1-1 PB (verified): 11,400
DK PB 1st Man: 622,000

www.twitch.tv/yesaffinity/
DK Blog: http://donkeykongforum.com/index.php?topic=1357.0
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