Only thing I can think of is that it fried your laser too? I'd try adjusting your laser pot very slightly... youtube most likely has videos if you need help. I assume you know what I'm talking about though seeing you swapped boards no problem.
Stupidly i plugged my jap DC into the 240 volt power supply.
This caused quite a lot of smoke and looking at the power board it has liquid on it.
I found on google that you can swap the power board for a pal one, which i did.
The DC now powers up and the disc spins but it is unable to read discs.
Any suggestions on what could be the problem?
I have plenty of spare pal parts to swap if needed but no jap spares.
Thanks in advance.
Welcome to the forum! I can't really help you with the problem, but just so you understand what CRTGAMER meant, on this forum we us JP or JPN to abbreviate "Japanese." It's just to avoid confusion with a certain racial slur and make sure nobody gets offended. Not trying to attack you, just FYI.
I hope someone can help you! Hope to see you around!
Looking for Animal Crossing e Reader cards! - link
Perhaps the smoke got the laser assembly and lens just dirty enough to not cooperate. Dampen a qtip with alcohol, make sure it isn't dripping, then lightly drag it across the lens a few times. Give it time to dry, then try again. If it still isn't working, maybe a reflective mirror or something in side the laser assembly that's still dirty. I've seen videos for cleaning this on a PS2, but not specifically looked for ones for a DC.