Quote:
Originally Posted by ivanjt
Oh to get my hands on a unit that I could take apart and map - started building, and taking apart, electronics units in the days of valves, now I build and repair computers and repair notebooks.
Try and trace the LED power line and somewhere you should encounter an electronic switch - either a single IC or an IC and transistor (IC will most probably have 8 pins). The photos that have been posted aren't good enough (clean well focused and evenly lit) for me to use to try and trace and give advice as to where to look.
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My camera isn't in the best of conditions (same with my shooting skills as well) :<, but I will try to get a better shot of the traces. I was worried it would be an issue like a transistor or something (as the lcd had flashed white while it was off when I was moving around the main board.
The only chip on the pcb for the lcd side is a 06A3*7*41 (the 7 could be a 1, it's a really small chip) TSC20071. It appears to be the controller chip for the touch screen, so the ir mouse might be controlled on the mainboard instead.
http://pdf1.alldatasheet.com/datashe...N/TSC2007.html
I tested the voltage and amperage of the backlight while the unit was powered on. I was reading 4.88v @ 0.78a. I had tested the leds with a power source of 7v and they had lit up at about the same brightness when the unit boots up.