Search results

Hi all, got a no power 820-00840. history is that it just stopped working, no signs of any liquid, Board is perfect. I get 20v on the charger so 3V3 is OK but 0 amps being drawn and 0v on PPBUS_G3H. i removed the fuse and get a 3.3ohm short to ground on pin 2. looking around the only...

Hi all, Does anyone know of a good supplier for genuine Apple parts supply in the UK? I currently use The BookYard but they have been troublesome recently so wondered if anyone has any other tried and tested suppliers? Maybe I?ll have to stick to China ????? Thanks

Hi all, got a strange 12inch MacBook here. Original issue was that it booted but to a flashing question mark. Narrowed this down to the Audio cable. now it boots to the volume but slowly and then shows the prohibitory sign. The IPD cable is also shorting US_G3H_TPAD_F to ground on F4800 and...

Hi all, I have a 2014 MBP with no backlight, image is present with torch under screen. Backlight Output = 12v KG Display has been tested. I'll be honest with no backlight, I generally replace most common component failures instead of testing as it's just quicker. But this one doesn't want to...

Hi all, I have a nightmare board - quite literally was destroyed by another company. History is liquid damage and some poor rework. Current symptoms: Green light and draws 0.26 amps (CPU/GPU are warm) I have replaced the SMC twice now as I thought the above was caused by that and most of the...

Hi all, This board had a small liquid spill close to battery connector. - symptoms are that it can see the battery but displays replace now and will not charge. Data lines are okay i assume as it can see the battery. Battery is a KG OEM. I've replaced the following: ISL All caps and resistors...

Hi all, History of this board is liquid i believe but someone has cleaned and messed with U7200. Anyway it's dead - when connected to PSU it draws 1.4 amps and then straight back down to 0.02. All the rails are present when it's first connected and sometimes it stays on and cpu/gpu get hot...

Hi all, I have an 820-3476 that had no power missing pm_slp_s4_l. Traced that back to a corroded U8020. Now it spins and draws 0.14 amps. I have no vcore and cpu is cold. On Q8150 i have all the inputs around 0.7v but All_sys_pwrgd is 0.2v (i think this should be 3.3v?) I replaced Q8150...

Hi i have an 820-3115 that was liquid damaged - mainly to backlight, firewire and tbt circuits. It powered on and PPBUS was at 12.56. Fixed all areas then after ultrasonic it now won't boot and no green light PPBUS is 12.2v PP3v42 is present SMC BCACOK is present SMC_Reset_L is 3.4v ISL...

Hi all, I have a 820-3115 that I have replaced the lcd connector on and now I get no image but I have backlight. I tried another connector but same symptoms, any ideas? Thanks

Hi all, I have a 820-3115 that has 0 volts on PPVOUT_SW_LCDBKLT . I have 5 volts into U9701 (i have replaced this but no change) I also have pubs voltage at Q9706 but 0 volts coming out. On pin 3 of Q9706 for LCDBKLT_EN_DIV i have 12.20v. Any ideas what's going on? Thanks

Hi all, I have an 820-3115 that is completely dead. This is the history so far: - No green light and 9 volts on pubs_g3h - Replaced ISL6259 because it looked like it had a hole in it - Green light restored - Powered up normally. I then plugged it back into the power supply and Q7085...

Hi there, I've just had a board in thats had a lot of work done to it :-( So symptoms are: Fan spins for about 5 seconds when connected to power then stops. Then it starts again and stays on - fan goes high. I have gone through all the power rails - all present including vcore at 1.8v. Does...

Hi there, I have a 820-4924 with no backlight. I have 50 volts on PPVOUT_S0_LCDBKLT i've tested pretty much all of the backlight circuit and it seems fine. U7700 seems to have everything too. any ideas where to go next? thanks

Hi everyone, i have a strange board in at the minute which ive never experienced before. When a magsafe adapter is connected it ends up burning out the two end pins on the MagSafe board and kills the charger. a little reluctant to plug in my charger as they are so bloody expensive! The...

Hi, I get no green light on 820-4924. ISL area looks perfect for ref. On D7005 i get 0.02v on pin 1 which should be 16v+ Likewise for pin 2 its 0v. On Q7010 i do get voltage on pin 1 at 16v but I'm confused what the DCIN ISOL area is for and whether this is causing the issue? Any ideas? Thanks

Hi there, New to this so bear with me... I have a board that has no green light and will not power. It also makes a ticking noise. I have put a new ISL on so far and tried a different magsafe board. on PP3V42 i have = 3.481v which i assume is okay... PPBUS_G3H is = 12.27v On U6900 pin 1...