jcroach
Member
I picked up a Donkey Kong last weekend. This will be my first restoration project. I've been working assessing all the issues. I hope you all can help me with the monitor issues. Please keep in mind I know next to nothing about monitors and electronics.
So, here are the issues as I see them.
1. The monitor is very dim. I need to turn off all the ambient light in the room to see it. I even took the bezel off to take the pictures in this post. The previous owner said that it didn't work, but I think that was because they never saw the images on the monitor and the sound was disconnected.
2.The image sporadically sputters. Not sure exactly how to describe it. It flickers, there's a bright flash on the screen and there is a crackle type sound. See the video.
3. The "thud" sound when Donkey Kong slams onto the girders occasionally doesn't work.
4. The colors are way off.
Here's a video that shows the sputtering. On this video, the "thud" sound is working.: http://youtu.be/XquyKUjPGWk
I'm seeing more colors than shown on the video. Here's are some still images showing all that I can see.
So, what do I need to do?
I figure that I'll need a cap-kit first of all. Which of my problem might this fix? I was thinking it might fix the dimness. Also, is the "Thud" sound an analog sound? If so then maybe re-capping the audio board on the monitor might help this issue?
What about the stuttering? Is this a common problem? This is what's got me most concerned.
I'm beginning in to think the colors issue might not be a monitor issue, but might be one or two bad PROMs instead. This web site: http://www.brasington.org/arcade/tech/dk/ makes me think I might want to replace at least the 2F PROM and maybe the 2E. Is there a way to test these before I buy one? Who do people buy their roms from? Steph at hobbyroms.com?
Also, totally not monitor related, but is there any benefit to replacing all of the fuses immediately?
Thanks in advance everyone!
So, here are the issues as I see them.
1. The monitor is very dim. I need to turn off all the ambient light in the room to see it. I even took the bezel off to take the pictures in this post. The previous owner said that it didn't work, but I think that was because they never saw the images on the monitor and the sound was disconnected.
2.The image sporadically sputters. Not sure exactly how to describe it. It flickers, there's a bright flash on the screen and there is a crackle type sound. See the video.
3. The "thud" sound when Donkey Kong slams onto the girders occasionally doesn't work.
4. The colors are way off.
Here's a video that shows the sputtering. On this video, the "thud" sound is working.: http://youtu.be/XquyKUjPGWk
I'm seeing more colors than shown on the video. Here's are some still images showing all that I can see.
So, what do I need to do?
I figure that I'll need a cap-kit first of all. Which of my problem might this fix? I was thinking it might fix the dimness. Also, is the "Thud" sound an analog sound? If so then maybe re-capping the audio board on the monitor might help this issue?
What about the stuttering? Is this a common problem? This is what's got me most concerned.
I'm beginning in to think the colors issue might not be a monitor issue, but might be one or two bad PROMs instead. This web site: http://www.brasington.org/arcade/tech/dk/ makes me think I might want to replace at least the 2F PROM and maybe the 2E. Is there a way to test these before I buy one? Who do people buy their roms from? Steph at hobbyroms.com?
Also, totally not monitor related, but is there any benefit to replacing all of the fuses immediately?
Thanks in advance everyone!
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