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u7700 no voltage on pin 1+2 but 5v present on 5 18

nothing on pin 1.

Yes there is 5v at pins 28-30 on lcd connected.

Yes usb activity present. I have osx on external hdd via usb light flashes and drive spins up. Disconnected ssd. I will try another display but strange no external?

John there is no external could it have any problem with smc_lid? informaticos PM_SLP_Sx_L signals are all steady high. when i press power smc_onoff_l it doesnt pulse doesnt go low it just stay high. im sorry if i didnt understand you correctly. thanks for your replies.

Hey informaticos. please excuse me, i re-read your post again. I solder the wire smc_onoff_l and i touch to ground for 1 sec. i was holding for longer before with tweezers. so i get pulse on Pm_pwrbtn_l but NO pulse on: pm_slp_s5_l pm_slp_s4_l pm_slp_s4_btmux_l pm_slp_s3_r_l pm_slp_s3_l...

cpu is 1.9v all voltages present even s0 but without pressing power on? dont these models need to be power on for s0?

the only time they drop to zero is when i hot smc_onoff_l otherwise all are high including all_sys_pwrgd all_sys_pwrgd doesnt pulse always high.

Ok please be patient with me. I am new to oscilloscope. So basically when i test the Pm_slp lines i get two types of reading - one is just an instant voltage change - this is when voltage just goes from 3.3v to 0 when i press power OR second type of reading i get is the voltage goes up and down...

ok so its at 3.4v and when i short r5115 drops to .3v on PM_PWRBTN_L PM_SLP_S5_L pulse should i test all PM_slp_sx lines?

When u say check signals on pm_pwrbtn_l & pm_slp_sx_l signals - u mean on mutilmeter?

hey informaticos thank you for your reply. I am using original magsafe 2 60w charger. I have pm_batlow_l 3.3v smc_adapter_en 3.4v pm_slp_sus_l 3.35v s5_pwrgd 3.4v pm_dsw_pwrgd 3.4v pch_dswvrmen 3.25v pm_rsmrst_l 3.3v Im not sure how to do this informaticos. "Trigger SMC_ONOFF_L (R5115/16) and...

i forgot to try with lcd after u7701 replacement. i ultrasonic and test in machine its all good. everything working perfect. thanks so much informaticos

R7180 100k r7181 62.5k r7185 471k r7186 316.1k

does lcd connector must be connected for the right reading?

3.4v on smc_lid r7180 r7181 r7185 r7186 all good.

100% got image boot all the way to os. Chimes! D7701 no power on both ends i checked both traces from u7701 i also change u7701 just in case. no voltage on d7701 and bklt_en & bklt_pwm i forgot to mention this was also some waterdamage 3 area affected with visible corrosion: u5110 u7090 q7560...

hey all i have 3.3 coming to u7701 also 5v is there feedback line is good f7700 has 8.67v but nothing on lcd boost? please help.

also john yes activity present on usb :)

Hey informaticos pins for u7100 2- 16.77v 3- 3.99v 9- 0.02v 12- 3.45v 13- 3.13v 14- 3.13v 15- 0.04v 26- 14.37v also pp3v42g3h present when only power connected (no battery)