820-2850 turns on but no chime and no video.

[Mattpd]

820-2850 with no visible water damage. Has visible prior repair near camera connector. Drop damage maybe.

Has green light, charges, turns on and fans spin. Screen never turns on and no chime. Nothing on external monitor.

No beep with RAM out.

These voltages are out of spec:

PP1V8R1V55_S0GPU_ISNS = 1.34v (should be 1.8v)
PP1V8R1V55_S0GPU_ISNS_R = 1.35v (should be 1.8v)
PPVCORE_GPU = 0.911v (should be 1.0v)
PPVCORE_S0_CPU = 0.81 (should be 1.25v)
PPVCORE_S0_GFX = 0.87v (should be 1.05v)
PPVCORE_S0_CPU_VCAP0 = 0.8v (should be 1.25v)
PPVCORE_S0_CPU_VCAP1 = 0.8v (should be 1.25v)
PPVCORE_S0_CPU_VCAP2 = 1.0v (should be 1.25v)

Any good ideas?

 

[Mattpd]

Anyone? The board looks OK under a microscope...

 

[dukefawks]

USB mouse lighting up when plugged in?

 

[Mattpd]

USB mouse lighting up when plugged in?

No sir, it does not.

 

[dukefawks]

Could be anything. Inspect board for missing/damaged parts. Find out history of the board.