I recently acquired a duo 3 ultra and I can't get it to work at all. The ps2 boots and plays normal discs fine, but won't load backups and won't boot into disable mode for the chip.
I've quadruple checked all solder points via the diagrams on duomodchip.com. I'm using 30g wire for data connects, and 24g wire for gnd and 3.3. My ps2 motherboard is revision GH-051-32, which should be a version 16.
What is left to check? Is is possible that my chip is defective?
By the looks of your install, it looks like your ground wire has been pinched. Also, did you use a hammer and form the heat shield in a way that it won't touch the chip?
Your signal wires are a mess. I mean NO disrespect! All of your wires should be flat against the board. Route your wires in such a way that none cross another more than once. Use a little hot glue to secure wires in place.
If you're using 30AWG wire, you should be able to tin the vias where points, G, H, I, B, A go. after tinning the vias and the wire, use some flux and heat the via, sliding the wire INTO the via hole will make for a better connection rather than resting it on top and soldering.
Make sure you don't route a wire over a screw hole. You'll short out that wire and possibly ruin something else. Cover your chip after installation with a layer of electrical tape for a little more insulation
I also heard someone suggest to supply the chip with 5v instead of 3.3v, so I'm going to try that first since it's an easy change. If not I'll redo it like you suggested and let everyone know how it went.
I'm having a similar problem with duo 3 ultra install, but in a v7 ps2. It started up fine for the intial boot up, but could not read my backups. Also, after a turning off the power and restarting the system, it no longer displays any image of on my screen. It acts like it loads games fine, but doesn't broadcast any signal...sound or otherwise.
Sorry for adding to the pile of confusion, but I could really use the help.
Have you checked the bios chip area? The smallest of solder bridges between the pins will cause that to happen. If that's the case then just removing the bridge should make it work again. I actually did that several times when attempting to install my chip, and removing all solder from the area always set me back to square one with a working ps2.
