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So I've been extremely busy trying to finish this project lately, but I've run into another problem and if anyone could help that would be great!

On the DMG motherboard, I decided to use a newer one due to the original one not working even after replacing all of the capacitors. I started by removing the cart connector and power board, then cut the two bottom corners of the pcb, and reattached the power board. I tested it and it worked perfectly, the screen just showed the black bar going down the screen as it normally would without a cart inserted. Then I removed the power switch and the top right capacitor (C1 100uf/10V), then cut down the two top corners. I then reattached the C1 cap by attached the (+) leg to another point that was going to the same place as the capacitor originally was, then attached the (-) leg to the link port's ground shield. The power switch was then attached, connecting the pins in order, 1->2 and 3->4. If I'm not mistaken, 1 & 2 are VCC and 3 & 4 are GND. But then when I tested it using an AC adapter, the backlight would turn on and there would be either a single horizontal line near the bottom of the screen or multiple ones, but when turned off it would do the normal horizontal line across the bottom of the screen and then fade away. None of the components got hot during the testing, and I've double checked to make sure there aren't any shorts. I haven't replaced the caps on the new pcb, so perhaps that may be the problem? But it worked with the old caps before removing the power switch and cap C1 so I'm not sure...

Any suggestions?

I bought an electric guitar when I was 15, and taught myself how to play using tutorials on the interwebz. I later learned the bass, and a couple of years ago got really into playing the keyboard. I never had any formal education for learning those instruments, you really can teach yourself whatever you need to know using all of the resources available on the net. I did have some formal training for audio production at an art school, and in my music theory courses the professor introduced me to musictheory.net, and that really helped me with understanding how music theory works. I would suggest using that site or something similar, and perhaps start playing a simple keyboard since you seem to be more interested in the electronic side of music. Xylo has a good point about being able to learn how to compose melodies, learning chords, etc. by starting with the keyboard. When I use LSDJ, I usually have a small keyboard set up nearby so I can play something on that first and then put it into LSDJ.

The GetLoFi pot would work fine I'm sure, I had to use the other because the GetLoFi one was a tad too big to fit with the placement of the right RCA jack.

It's been a while since I've worked on this, but I ordered a batch of Arduino Pro Mini's that should arrive by the time the holidays are over, as well as some other small components. Should be back to work on this badboy after the new year, and it shouldn't be long before it's completed!

I just started another Instagram account for my GameBoy/modding pics,
boddahscreations

Hooray! BoC is what I usually put on while modding

Price drop on the GreyBoy, added eBay link for Green/Red DMG.