Greetings. I'm working on a 820-2879 with a spinning fan, no video, no chime/post.
There are 5 pads between u6990 and u7600 that are very slightly red, other than that I can find no evidence of any water damage. I checked a few voltages related to the CPU in case that was the issue and found;
PPCPUVTT_S0_REG at 1.074v
SPI_ROM on pin 8 has 3.315
PVCORE_S0_CPU_REG = 1.103v
Any idea on where to look next? Researching the 5 flashes of the sleep light I found there could be a ROM issue, which seems to all relate to this area of the board. Any thoughts on where to go next or what to test?
thanks,
Paul
There are 5 pads between u6990 and u7600 that are very slightly red, other than that I can find no evidence of any water damage. I checked a few voltages related to the CPU in case that was the issue and found;
PPCPUVTT_S0_REG at 1.074v
SPI_ROM on pin 8 has 3.315
PVCORE_S0_CPU_REG = 1.103v
Any idea on where to look next? Researching the 5 flashes of the sleep light I found there could be a ROM issue, which seems to all relate to this area of the board. Any thoughts on where to go next or what to test?
thanks,
Paul