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Ola 2Informaticos, Im using a DC power supply with original 85W cable because of the tip, as you know it contains a chip that is talking with the machine with the one wire protocol. Regarding the chip , I've just replaced the bios chip from a donor board, of course I did all the...

already dumped, cleaned (ME, Pram and SSN area) with the medusa and restored it back without success but i can try another chip you're right ...

yes : full fan speed in loop like quarter fan spin but at max speed

re assemble everything and still the same problem, except that its reseting the SMC when shorting ( just a short contact not 5 sec ) the debupg power pads and not turning off. When I press on the power botton of the keyboard it goes from 3.3V to 0.5V not less.

PM_DSW_PWRGD: 3.428V U1800 PCH an d SMC reflowed still quarter fan in loop Any suggestion?

I did a Last reflow at 500°C and 120L/m and apparently it's working properly now : recovered 3,3v at smc_onoff_l and turning off when shorting power pads. I left it on my desktop and will re assemble it later.

Ola 2Informaticos, I've reballed the SMC, and it's still the same situation like before: Marchine turning ON, fans slowly runs to max speed, and no way to turn it OFF by shorting the power pads or from the keyboard. So I've attempted a reflow again and the machine is acting the same except now...

I'm back with that board: After I've put it back in the mbp, I had no bcklight ( fixed) and once ON it doesn't power OFF. Tried to short the debug power pads ( R5015 R5016 ) still the same also with the keyboard connected I've pressed the power buton and mesured WS_KBD_ONOFF_L: this one passes...

replaced also R7978 because I've lost it. Machine fixed: Fans spins So the issue was U9410 "shorting" PM_SLP_S3_R_L rail to gnd. Don't think I'll put a new U9400, I will leave it without it which means no thunderbolt port A

I've reflowed the SMC and now Ihave the S5 state back :p also with U9410 removed , PM_SLP_S3_L is 3.331V ;)

BIG Sorry PP3V3_S5 is 0V I was mesuring PP3V3_S5_AVREF_SMC because of OPENBOARD View pointing me at it...... which means NO S5 State at all

PM_SLP_S3_R_L resistance to gnd: 2.8 Ohms If R7978 is removed PM_SLP_S3_L mesures 3.4V Tracked all PM_SLP_S3_R_L rails and removed and mesured all resistances (R7981 , R7985, R7986, R7987, R7988 ) to make sure no short to gnd Then checked and removed all components after those rails that may be...

After UC Cleaning Still the same situation: PM_SLP_S3_L: 2.318V diode mode with red probe to gnd: PM_SLP_S3_L: 0.088V

Small Water damage PPBUS_G3H: 12.57V PP3V42_G3H: 3.405V PPVRTC_G3H: 3.343V PP5V_S5: 5.053V PP5V_SUS: 5.053V PP3V3_S5: 3.343V PP5V_S4: 5.054V PP3V3_S4: 3.343V PP5V_S3: 5.054V PP3V3_S3: 3.346V PP3V3_SUS: 3.342V PP1V5R1V35_S3: 1.354V No S0 State No SMC Bypass mode PM_SLP_S3_L: 2.327V diode...

I've reballed the original SMC and resoldered it : I'm back at the exact same point like at the begning: No S5 state Which means ( I think ) the SMC is bad and have to be replaced by one from the same exact motherboard.

Very good suggestion Alan, this is exactly what I've got: both TL866 + Medusa 2

Honnestly as 2Informaticos said higher in the Post : buy a Medusa 2 box from Harald (http://www.cmizapper.com/products/medusa-2.html). you'll see it worth it: it will save you a lot of time and do many tasks easily

ok mañana gracia.....

Already tried at the begining and no sign of life Also removed both Q7840 and U7801 and checked but i'ts still pulsing

5V_SUS also pulses, Removed R5805, 5V_S5 still pulsing very light pulses at L7260 from 0V to max 0.04V Also my DC power supply is "tic-ing" in loop but doesn't go in protection mode (CC)