Donkey Kong Jr. Restoration (COMPLETE)

Arcade Collecting > Restorations & repair

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opt2not:
Here's the video capture of the monitor problem.

Sorry about the quality, I was in a rush when I took this.

As you can (barely) see, the game starts off perfect, then about 10 secs into it, the screen's vertical position "snaps" and cannot be adjusted. This was after I installed a new cap-kit. The wavy-ness is gone, thank goodness, and is nice and bright...but all that remains is this vert problem. Could the flyback be toast? Or perhaps there are additional caps needed to be changed...
:dunno

Kman-Sweden:
Make sure the monitor is grounded correctly..

opt2not:
Now that I'm permanently down here in SoCal, I was able to reclaim my machine from my bro-in-law.

Soon I'll tackle this resto again! Stay tuned.

Mike A:
Somebody is back in the game. :cheers:

opt2not:
Spent a little time debugging the monitor issue.
After re-capping the chassis and neck board, replacing the fuses, checked the cabinet's ground, in the end all it took was clearing out the h-pos and size pots that fixed my sync issue. These pots are notorious for getting dirty, so just moving them back and forth a few times can help remove some of the build-up.

It was a small fix, but took a while to track down. But in any case, DK Jr. is now running 100%! (9 years later...)

I only spent a little time tuning the image, but there's a bit more convergence tweaking needed. I'll do that later.

Next up is to look at the joystick and give it a good clean and re-grease. I'll replace the spring on it too. Right now it doesn't reliably center back to neutral, and sometimes the switch actuation is off. I might just replace the switches in there too.

Also, this currently has some beat-up oversized t-molding installed. It's ugly, it's chipped up, and parts of it is lifting from the slot. I'm going to replace it with the proper sized molding, fresh and clean.

Slow updates as they come... :cheers:

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