I just cooked my V12 laser.....
I had the modchip working fine and after one hour it ceased booting DVD-R only.
I had only applied the tracking part of summOne's fix.
I went in this morning and decided to do the focus part. I wound up soldering the 4.7K resistor to the wrong side of the 303 resistor. Then you smelled burnt electronics and the laser eye is now cloudy.
Now I realize the laser is toast, but did I kill anything else?