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Hi I purchased a board off eBay and I repaired the water damaged areas. but it has no bios chip I’d like to do a clean ME and switch serial# from a donor chip. I searched on this forum but all the “clean” or “test” bios say “in owners trash” or just don’t download. I wanted to use ME injector...

Hi I have a board that I purchased it wasn’t turning on it had r5281, r5280 that where 2k each I replaced them with 1k and now I get a orange light. I also replaced c9560 as usual and I get a fan spin but no chime or video. When I remove the ram it does beep. With The usb mouse flashes about...

Hi I got yet another board that does 3 beeps I missing u7300 missing 19&20 But it seems I have all other signals. with ram installed Smbus is good I have 1 beep with ram removed. All measurements with ram installed 12800& 10666 tested with both 1-DDRREG_VTTSNS=.75 2-PP1v5_S3=1.5v...

Hi I have 4 820-2850 that had 1/4 fan spin I’ve done some work on and 1 actually booted and died after with 3 beeps the other 2 820-2850’s start to boot but hang 1.04v on cpuvcore. My magesafe power supply says it starts drawing 1.23amps and when fans spins high it draws 1.43amps from MagSafe...

Hi i have this board and I replaced a isl6259 which had a low PPBUS now I have 12.56v I found the I was missing PP1v05_S5 so I check u7600 area and all measurements where spot on I replaced u7600 and now the fan spins for 10-15 secs I went over the rails in diode mode and none are shorted :/...

Hi I have a question. I’m getting a fan spin for about 4 seconds I test PPBUS_G3H 12.55 PP5V_S5=5v PP3v3_S5 = 3.3v PP3v3_S3= pulses 0-3.3v PP5v_S3=pulses 0-5v PP5VS3_ENTRIP = pulsing 0-5v PP5VS3_EN= 0-5v U7000 Pins 28,27 = 20.4 ohms Pins 17,18 = 3.2ohms RTC PCH_CLK32K_RTCX1 =0v...

Hi I would like to know what would hold a board from dropping from 1.15v to .959v I have one board that just hangs at 1.15v and second that goes from 1.15 to .685v Neither of these two boot. I have a booting board that works and it starts at 1.15v and then settles at around .950 forgive me if...

Hi I was working on a water damaged board and I relplaced a few items on 5v/3v rail. It chimes now and I have CPU activity mouse flashing. but no display I’m missing J9000 ( pin 3 0v, pin 4 3.3v) LCD_PWR_EN 0v at U9000 and SMC_LID is 3.4v L9080, r9008, r9009, L9004 all measure good so I’m...

Hi I received a board and it had 1/4 fan spin Replaced c7721 it was Still shorted then replaced u7720 and got the board working Chime, booting, activity on screen but no backlight. After using dosdude gmux I still had no backlight replaced lp8550 and fuse :( now the board is dead again I...

Hi I recieved this board it had a few issues I replaced isl6259 and tps51125 And a few resistors. Now I have PPBUSS_G3H =12.5v PP5V_S5=5v PP3v3_S5=3.3v SMC_ONOFF_L =3.42v SMC_RESET_L =3.42v U5010 PIN 1 PP3V42_G3H_SMC_CLK_F =3.42v PIN 7 SMC_CLK_R =1.49v ?? Pin 12 PP3V42_G3H_SMC_CLK_F = 3.42v...

Hi I know I posted this earlier last month but now I have two with the same issue :/ Camera not recognized. I just finished testing 2 -820-3437 and the FaceTime works fine :/ I tried PRAM and installed a new OS X on my test drive Both 820-00165 where water damaged but no where near Anything...

Hi I got this board and it has no green light PP3V42 .9v I found a cap C5002 shorted and removed it :/ I didn’t find corrosion around smc. It looks like it’s been tossed around parts are knocked off and u2940 is cracked. I don’t have this size caps or a donor board yet i need to order one is the...

first I’m not sure this goes in this section of the forum. but what are you thoughts on using hwsensor? Is it good? What about the plugin FakeSMC? Is it worth the trouble installing ? Or is there something better? thank you for your time

Hi, I received this laptop with a couple of issues the webcam won’t work. I’ve looked around and can see any damage On cable what so ever Al the way up to hinge and where it disappeared into the screen. How can I test the camera itself? Oh also the ssd set screw is broken inside should I glue...

I’m ordering 2 donor boards for this board that just arrived I tested cpu and It seems normal Reading .15v to ground as I remember from a previous board this should be ok. I uploaded the areas that have corrosion I will replace everything around cpu, rtc and smc. What would advice be as to what...

Hi I have a board missing PM_SLP_S4_L Cpu prerequisites: ppvrtc_reset_L=3.3v Pch_srtcrst_L=3.32v Pch_intvrmen_L=3.24v Pch_dswvrmen_L=.489mv Sysclk_clk32k_rtcx1=.489mv PP3v3_s5=3.3v Pp3v3_sus=2.7v Pm_batlow_L=3.3v Pm_rsmrst_L= 3.4mv Pm_pwrbtn_L=3.45v I also have power u6100 on pins 8,5 but not...

Hi I received a board with liquid damage in 2 areas 1st Area: u7400 in area CPUIMVP_TONB (R7403,C7441) AND CPUIMVP_ISNS1_P (R7406,R7466) the resistors #’s are just to pin point area of corrosion 2nd area: Q5300 and R5314 I get a green light and quickly the light goes out in a split second...

Hi, First I wanna apologize as I don’t know if this is the right place for this question. I have a few boards a1466 from ranging from 2013-2015 I’m looking to buy a test enclosure I found a few 2013 and A few 2015 Enclosures Both seem pretty similar. Are all these board compatible with either...

Hi I have a board that doesn’t chime. Audio circuit is fine. all my voltages are present and have fan spin. But, no mouse activity. The mouse blinks only once in start up. I checked for cpuvcore voltage it’s 12.5 and resistor R7402 is 90.7k I guess my question is that On pin 1 of R7402 what is...

At u7201 Ppbus_g3h=12.56v Pp5v_s5 =5v Pp3v3_s5 =3.3v pp3v3s5_entrip1=800mv Pp5vs3_entrip2=800mv 5vp3v3_reg_en=3.3v Pp5vs3_vbst_r=5v Pp5vs3_LL=0v I’m seeing that both entrip signals are low so both s5 and s3 should be up. If I’m reading the schematic correctly. I have no short on s3 line...