New pick up!

Robertmendon

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Last night i picked up what is going to be my biggest project to date. For a 100 bucks i could not say no to this!
I do have a few questions. This game was converted to jamma do i have to replace the harness to restore it to a dkjr? I know i will also need to rotate the monitor i should need diffrent brackets for that right?

I am very excited about this project after fixing my pac man last month i was feeling much more confident and ready to take on a bigger project
 

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I've yet to do the work on my DK jr, but I see your power supply isn't original which is fine, you are probably going to want to just make a new harness since DK jr isn't Jamma. BUT, I believe there is a Jamma to Nintendo adapter here...I think this is what you need if you don't want to rewire a harness

https://www.mikesarcade.com/cgi-bin/store.pl?sku=NIN2JAMMA

If it were me, I'd just buy the proper pin edge connector and rewire to the DK jr pinout here:

https://www.arcade-museum.com/pinouts-game/7612.html

Good luck.
 
I got done restoring my dk Jr which was converted to Ladybug.

I ended up getting a pp7b power supply, and original Nintendo wiring from Mikes Arcade and from local collectors. Your transformer is good, you'd just need to replace the switcher with the pp7b if you wanted to stay authentic. You could get the Jamma adapter and leave the wiring as is, but I've read the adapter has an on board sound amp, and can be a problem. I think it's better to use original wiring and hook up to the original amp that sits on the monitor.
 
If you can get the original power supply cheap enough I guess that's the preferred way to go...but when you factor in a DK jr pcb costs at least $150 working, $50 for a power supply, maybe $60 for the wiring harness to match, $50 for a joystick, $40 or so for the buttons, $50 for the bezel and $30 for the marquee, and $45 for the cpo....it kinda adds up. The power supply would be the last thing i would worry about if it were me.
 
It really comes down to what you want - a working game versus a working game as close to original as possible.

Honestly I don't think leaving it Jamma is a huge deal but I chose to spend the extra cash on my DK restore and bought a harness to convert it back. I chose to get a DK and DK Jr board so this game is a 2 for 1 for me and I thought it was worth the extra cash.

Happy to give you advice no matter what path you choose... But you definitely need to decide first since the power supply and harness are the first things to start acquiring or working on...
 
Inverter

Also another thing to consider with the Jamma adapter from Mike's, besides the audio issues, is that the adapter has a video inverter on board, which is designed to take the inverted signal from the board, and flip it on non-Sanyo, non-Nintendo monitors.

Mikes makes two adapters - a Jamma PCB to Nintendo Cabinet adapter, so you can play Jamma boards in an original nintendo cabinet with original Sanyo monitor. This has an inverter on the board to flip the signal properly for the Sanyo, which expects the signal to be inverted to begin with, as Nintendo PCBs output.

Then, Mike's sells the Nintendo PCB to Jamma Cabinet adapter (the one we are talking about here). The assumption here is that you are using a Nintendo board in a non-Nintendo cabinet, with a non-Nintendo monitor, that expects a normal non-inverted signal, but in your case, your monitor IS a Sanyo, and so you'll be flipping a signal when it isn't needed. I think you'll have problems with this route.
 
nice pick up

bottom of the 9th is possibly the very worst game ever made. unfortunately you won't be able to make a dime selling any of that stuff.
 
I thought about doing that as well are you using the switcher from highscoresaves?

My plan is to add his kit eventually. Right now the game is against my game room couch and I can easily access the back. So I just move the edge connector manually over when I want to play DK Jr. I usually keep it playing the same game for 2-3 months then switch it up. I'm actually going to get a DK3 PCB for it as well and then I'll probably do the full on switcher project.

I've been messing with a 6-1 switcher for awhile now for my NBA Jam cabinet. That's my current switcher project. One at a time... hehe.
 
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