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Hi Guys. I have an A2142 (820-01700) board here for data recovery. It's pulling 5V and auto detects in DFU mode. The board was previously in at another shop, there was flux around the T2 Chip, ISL9240 and PMIC. I changed ISL9240 - it appears prior shop attempted reflow on these components...

820-00165-A Board no Light on Magsafe, does have light sometimes but most of the time does not. Everything else on machine works perfectly fine, using known good charger. Any idea?

How do you diagnose a board that has intermittent power problems? Boots normally then dies randomly at different times, then does not boot at all for some time then randomly starts working again. Wondering what the first steps are in diagnosing something like this.

820-3437 Board Originally No Power - was Missing PP5V_S4RS3. Replaced U7501. Now have PP5V_S4RS3 measuring normal 5V with fan spin, then after couple seconds fan stops& voltage drops to zero . Machine keeps trying to start like this and fails. Fas spins for few seconds then turns off. Keeps...

We are currently using iQMetrix RQ but it has been giving us issues. We would like to switch to RepairDesk or RepairShopr but cannot decide which one. Any recommendations out there? Thank you in advance.

Machine gets orange light, no fan spin. Found it was missing PP3V3_S4SW_SNS. I tracked this back to U8050 and found that U8050 was not getting SMC_SENSOR_PWR_EN. I found that the SMC Creates the SMC_SENSOR_PWR_EN signal. I changed this SMC and still have the exact same issue, nothing has...

A1990 MacBook Pro 2018 - Strange Issues - Intermittent No Back light , Wont Boot Normally Machine boots to password reset screen but only sometimes with back light working, 70 percent of the time no back light. This happened following a force shutdown by the user. Tried SMC Reset, battery...

A1466 Doesn't Boot - Stuck Apple Logo Cant get into recovery, bootable drives don't work , Tried multiple known good SSD's Any idea?

A1466 Charging , Orange Light, But doesn't show its charging in macOS Percentage just continues to rise , is this just a software error?

Initially wouldn't turn on , Ran through ultrasonic cleaner now I am here. No more visible liquid or corrosion on board. Current issues - Loud Fan Spin + Slow / Laggy Operation Everything Else Works Fine. From what I can tell I need to run an "MRI" test as ASD is not available for the 2015...

820-3115-B not charging battery ​​​​​​Irregular readings I noticed: ​​​​​​PPBUS_G3H = 12.3V SDA Battery Data Line = 3.2V SMC Reset is Good Is this a bad SMC?

820-3115-B No Battery Detection I have noticed: R5280 has a resistance of 1.5 instead of 2 , resistor itself is fine Testting at R5280 seems to be where the problem lies if I am not mistaken. PP3V42_GH3 = 3.4V SMBUS_SMC_5_G3_SDA = 2.6V What controls R5280? I am relatively new, I apologize...

CHGR_BGATE to Q7055 12v insteadof 5v Q7055 Output (Pin 5) 11.29V Everything works on machine, just does not recognize or charge battery Should I Replace U7000 or should I check other things first?

Power rails measure normal, am getting .46 V on PPVCC_S0_CPU No visible corrosion but signs of water damage. Not sure how to diagnose low voltage on this line, how should I proceed? Thankyou!

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Hello, I have an A1466 that had water damage - cleaned it out and everythings good - comes on normally. After 30 - 45 seconds complete freezes and have to force shut down. Tried recovery mode, alternate OS, etc all same so it points to hardware. What would main causes of this be , so I know...

Hello everyone, I am somewhat new to board repair. I can diagnose and repair certain power / back light issues on macbooks, ipads, iphones etc. but am still learning how to use schematics and multi-meter to efficiently diagnose and repair less common problems. I have this 820-3115 board here...