Just installed the oBey mod chip into the PC Engine Duo! Even though I've done a bit of repair work on and off, I never got around to doing a mod. This bothered me so I bought a few chips from Turbokon at MGC last year and this weekend a bit of magic happened.
I cut the pins, and installed the shrink-tubing and I was thinking to myself "what the f*ck, not only is there no turning back but this shit is pink and it looks ridiculous." On top of it my Hu-Card slot was flipping me the bird.
After a snag or two I realized that there was a large blob of solder connecting pins 20 and 21, so I cleaned it up and bent the wires with a small needlenose pliers so that the chip would be level with the heatsynch. I then encased the chip and all of the wires in a bit of bubble wrap (an idea that I got from doujindance, although I have no Idea why also he has like 3 f*cking RGB boards, an elephant and the encyclopedia britannica inside the systems he resells). I then bridged pins 29 and 30 on HU6280.
The chip went in, I mounted it on the RF shield above he Hu-Card slot, and cut a hole in the back of the case for a low-profile I/O switch. I filled in the edges with clear epoxy and double-checked the connections so that they could be quickly desoldered in the event of a repair.
but here is my working install as per BMW/Turbokon's guide and help in chat from chop5 and thesteve:
Love the design, guys and can't wait for the new board! I'll be picking a few more of these up in the next month.
Cheers! And thanks for all that you do!!