DK Resets and Weird Audio

tebright1

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Donor 3 years: 2017-2018, 2022
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I have a DK that keeps resetting. It shows the high score screen, then goes into the demo. Mario tries to commit suicide, then game flips upside down and resets. There u5s also a noise on startup and then it makes a wired wobbly hum.

Any ideas where to start?

I took a video of the issue. I did it in the dark so you can see the image better. The 20EZ was supposedly recapped. But it seems to have some adjustment problems.

I also tried to capture the audio.

Let me know what you guys think.

Ps. I checked the +5, -5, and +12. They all checked out.
 
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i had a similar issue with my DK restarting and freezing, changing colors and flipped upside down. bought a switching power supply from Arcade Shop, but before i swapped it out, i unplugged the original PS and thought about recapping it... but first i took an air compressor and just blew it out several times, plugged it back it and it's been TIP TOP!!! reset at around
45,000 or sooner... but now i just had a new HS of 377500 and it's still working great. i'm new to the "repair" thing, but learning more every day.
good luck.
 
So I hit the service switch and was able to start a game. It immediately ends the first level and DK runs off. Then it goes you the second level. And Mario continues to fall through the level over and over.

https://youtu.be/uugdpFhBxqI

I also attached pictures of the first level. The ladder looks messed up at the start.

On a positive, the audio is good! Both analog and digital.
083a7c336b69611b3797f41b3f5e7f60.jpg
a30bd7de0ea1e2998f04ea2412a4c740.jpg
 
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