Recent content by Shredplayer

As i was testing S5_PWRGD which is 3.3v i notice the cpu is warm so put back the lcd and it booted but after i shut it down and turn it back on, no boot and display, a loose component maybe? reflow?

Pardon me if i post it here since i can't find an imac section, iMac 820-3302-A works but no backlight F9700 = 12v pin 1 & 2 R9712 = 12v pin 1 & 2 FB9708 = 12v pin 1 & 2 P MOSFET Q9702 Pins 1,2,3 = 12v Pin 4 = 11.75 Pin 5 = 0v Replaced Q9702 still no backlight pin 5 = 0v R9721 pin 1 = 12v...

PM_RSMRST_L = 0v PM_PWRBTN_L = 0v PM_BATLOW_L = 0v PM_DSW_PWRGD = 1.2v SMC_ONOFF_L = 3.3v PPVRTC_G3H = 3.09v SYSCLK_CLK32K_PCH = 0.5v PCH_SRTCRST_L = 3.09v PCH_RTCRST_L = 3.09v PCH_INTRUDER_L = 2.78v

PM_SLP_SUS_L = 0v RTC Signals = 3v

PPDCIN_G3H = 14.8v PPBUS_G3H = 8.7v PP3V3_S5 = 3.3v PP3V3_SUS = 0v

Changed u3100 now boots, damn you guys are good!

820-00244 Not powering on and i found out C3101 is shorted to ground so i replaced it and got a faint light on D6900 but still no boot no display and cpu not getting warm, i then tested PPBUS_LIO and got 14v and as far as i know this suppose to be a 20v, replace U3100 or Q3100?

U3200 Pin 2 PP1V8_UPC_XB_LDOD = 1.8v Pin 10 PPDCIN_G3H = 5v Pin 11 PP5V_S4 = 0v Pin 12 PP3V3_UPC_XB_LDO = 3.3v Pin 35 PP1V1_UPC_XB_LDO_BMC = 0v Pin 70 PP20V_USBC_XB_VBUS = 5v Pin 75 PP1V8_UPC_XB_LDOA = 0v U3100 Pin 2 PP1V8_UPC_XB_LDOD = 0v (still 0v even when i change the charger usb port)...

My apologies, actually i don't know where to start, these USB power issues are pain in the butt, ok ill check power pins of u3200 and u3100

ppdcin_g3h = 5v

Which component creates PPBUS_G3H? will replacing both CD3215 will fix PPBUS_G3H?

Actually when started working on it, PPBUS_G3H is fine using the charger but yesterday it went kaput

I have a 820-00840-A board not powering up, F4800 got got 12v on both sides, PP5V_S4 = 0V , whats next? PPBUS_G3H = 12v on battery but 0v when using USB C adaptor (ggod adaptor) No history of liquid damage

Cut the trace before the pin 4? will that disable also USB_PWR_EN on J9500 pin 3?

Just to make sure before i do that, u4600 removed then R8117 pin 1 = 2.3v and pin 2 = 0.80v, i then removed R8117 and i then checked PM_SLP_S4_L on R8117 pin 1 pad is measured 3.3v, does it confirm there's a leakage on R8117 pin 2 pad to u4600 pin 4? with R8117 abd u4600 removed here are the...