Hi all!

I received a Toshiba Satellite C645D without presenting video and the video chip damaged. I proceeded to replace it and I was surprised he still did not show image and the fan never turns on, and update the bios and microprocessor and RAM. What problem can have? Thanks in advance!

HannStar J MV-4
6050A2357601-MB-A02

did you replace with new one

If have a new chip.

take this schematic,check through schematic all voltages