17" iMac G4, GeForce 4 MX, 1GHz, 256MB Hi everyone, This imac was last powered on 6 months ago, it now makes no response to pressing power button at all. Here is what I tried: Replaced PRAM battery, reset PRAM by pressing the button, Hold power for 10 sec and plug back in, plug in and power at same time, resat the ram modules, tested diagnostic solder points and got 3.6V for battery, 12.20V for 12V, got 0.01V for 12VLSP and 5V. PSU was tested with multi-meter using the service manual guide and passed the test. I noticed some white and dry stuff around C241 on the logic board (next to 16 pin power connector) that needed to be rubbed off with alcohol. What should I do now?