Search results

Hi guys, the machine doesn't recognize the battery and partially working with the charger connected - shut down sometimes. I cannot located the TB3T sensor on the schematics and brd file. Can someone please direct me to its location? Thanks

It was the battery indicator flex cable. Now everything is smooth as it should. Appreciate the help guys!

C9560 was replaced and the machine looks to be running smoothly. Thanks guys, much appreciated

The GPU showed random failures so it was replaced. The machine was stress tested overnight (connected to a charger) and worked smoothly. When running on battery it experienced random restarts and the error above. That is the only error ASD shows. C9560 is measured at 1.55V (should it be measured...

Thank you. One line from the two was cut and fixed. Now PPBUS measured at 12.7V, the device finally runs. It is getting into sleep mode randomly and ASD shows only one error with VP0R sensor, which is measured too low

Hi guys, ASD (EFI and OS) shows the same error related to Temperature (Th2H) sensor: EFI - SMC IO failed OS - Unable to read sensor Thanks

The resistance between pins 17 and 18 is 0 ohm, also between 27 and 28. R7005 is 20 ohm. Thank you for your replies

I guess you meant those 2 current sensing circuits, resistors R7020 and R7050 - those are measured at 0 ohm, as they should I think. R7005 is measured at 20 ohm so those look to be alright

PPBUS is not stable. It changes from 3.3V to 10.7V (during this loopy process)

PPBUS was measured with the charger connected, no battery attached. My bad, I meant: ppvcore_s0_cpu=1.1v , ppvcore_s0_axg=0v , pp1v05_s3_cpu_vccdq=1.5v , pp1v05_s0_cpu_vccpqe=1.05v ,PPVCCSA_S0_CPU=0.8V

Ppbus_g3h=10.6v , pp3v3_s5=3.3v , ppvcore_s0_cpu=1.1v , ppvcore_s0_axg=0v , pp1v05_s3_cpu_vccdq=1.5v , pp1v05_s0_cpu_vccpqe=1.05v , pp1v05_s0_cpu=0.8v

SMC_RESET_L stay at 3.0V , SMC chip was also replaced, problem persists. Green light is present

Hi guys, The board stuck in an SMC_RESET loop, keeps on restarting every 2 seconds. Power pads don't work (shutting it down I mean). Had water damage over the U5750, U7000 area. Both were replaced. Concerning voltage, everything seems to be right and present. A hint anyone? Thanks

Thank you. Diode mode on pin 17 and 19 of trackpad connector = 0.597V when Airport cable is disconnected. Also the Mac works perfectly fine like that. R5270 = 0.998 Kohm, R5271 = 0.952 Kohm. R5271 allows 5% deviation - right on the border. Could that be it or should I look elsewhere?

Yes , I've tried with various trackpads / trackpad cables, it seems this is not the cause of the problem. Any other directions?

No corrosion near the SMC nor around trackpad

Louis, thanks for your reply. Replaced the trackpad with the trackpad cable, the same problems above now apear randomly - after a few minutes, they come and go. ASD shows only the "SMC: SMC PID Sensor check - The SMC's PID Sensor check has been tripped" error. Hope it's not the SMC chip. In PBUS...

ASD shows the following problems: Temperture (Ts0P) - unable to read sensor SMC: SMC PID Sensor check - The SMC's PID Sensor check has been tripped Thanks for the help guys

Yes changed both, the screen comes on before it turns off

What do you guys recommend? on German ebay IR6500 seems to be very popular.