John's Arcade Forum - Classic Arcade and Pinball Collecting and Restoring Discussion Forum - RETRO MAME - Nintendo Vs Forum

Arcade and Pinball Discussions => Beginner's Help Corner => Topic started by: KongJunkie on May 15, 2014, 05:02:04 pm



Title: Donkey Kong speed
Post by: KongJunkie on May 15, 2014, 05:02:04 pm
Hey guys!

One month after fixing up my Donkey Kong Jr machine, I came across an original Donkey Kong machine, so naturally, I bought it. There's just two things that need adjusting. First, the color is off. I adjusted the brightness, but Donkey Kong and the barrels are still a deep reddish brown. The cables on the elevator levels aren't even visible between the platforms. I'm pretty sure you can adjust the RGB levels but I haven't found where.

Secondly, and perhaps more noticeable, the game seems to play faster than every other DK machine I've ever played. I noticed the screen is narrow, so I need to adjust the vertical width, but I don't think making the screen wider is going to fix the speed. Has anyone ever experienced this before? If so, is there an adjustment I can do to fix it with?

Thanks for your advice!


Title: Re: Donkey Kong speed
Post by: John's Arcade on May 15, 2014, 06:41:29 pm
Hey guys!

One month after fixing up my Donkey Kong Jr machine, I came across an original Donkey Kong machine, so naturally, I bought it. There's just two things that need adjusting. First, the color is off. I adjusted the brightness, but Donkey Kong and the barrels are still a deep reddish brown. The cables on the elevator levels aren't even visible between the platforms. I'm pretty sure you can adjust the RGB levels but I haven't found where.

Secondly, and perhaps more noticeable, the game seems to play faster than every other DK machine I've ever played. I noticed the screen is narrow, so I need to adjust the vertical width, but I don't think making the screen wider is going to fix the speed. Has anyone ever experienced this before? If so, is there an adjustment I can do to fix it with?

Thanks for your advice!

Adjust the colors on the neck board. There is a set of three pots and a set of two pots.

I've never heard of fast DK but anything is possible.


Title: Re: Donkey Kong speed
Post by: KongJunkie on May 15, 2014, 07:18:27 pm
You rock, John! Thanks again!


Title: Re: Donkey Kong speed
Post by: iankellogg on May 16, 2014, 08:47:17 am
Is everything faster including sounds and music?


Title: Re: Donkey Kong speed
Post by: Bach730 on May 17, 2014, 09:17:00 am
I've noticed differences between roms in mame versions of dk. Can't recall if it was the japan vs US version of the board(rom) but the elevator screens were noticeably different in speed.


Title: Re: Donkey Kong speed
Post by: pinballjoe on May 22, 2014, 08:10:35 pm
The speed difference could be a mod kit that was installed, check to see if there is wires on the main board where they don't belong. one of the biggest things was to replace the clock circuit.

Pinball Joe


Title: Re: Donkey Kong speed
Post by: Tighe on May 22, 2014, 11:14:30 pm
When I got my Donkey Kong cabaret, it ran really fast, as well as had other issues, the problem was the the clock board:

https://www.youtube.com/watch?v=3kbUge6SHIc