For $29/mo, we provide access to advanced level technicians who will answer your questions on any Macbook board related matter to the best of their knowledge promptly & walk you through how to solve your problem so you can deliver a working board to your customer.
A2992 stuck on restore exclamation mark after liquid damage
Lots of damage, mainly in 2 areas.
around U6070 and on the other side of U7700
Also U5000 (Juno - Secure Element) which concerns me most. I took it off, cleaned and reballed it.
Am I correct with guessing this is critical and...
A2992 - liquid damage - PP1V2_S2 2.6ohm short.
Booting motehrboard has 3-4kOhms resistance on this line
Damaged areas were kb backlight, speaker aplifier chips and vicinity of U8100 PMIC. U8100 was replaced after I discovered it was shorted.
5V 0amp - motherboard out of the assembly
5V 0.4 amp...
A2337 - looping from 5V to 20V
Was connected over Belkin or some other adapters via HDMI, to a projector that has failed.
It started with power cycling on both ports, when it gets to 19-20V power meter shuts down and goes from 5 to 20V again
I was hoping for an easy win and just replaced...
Device was liquid damaged
Unfortunately it supposedly was in 2 repair shops prior and has signs of a diy attempt.
Nothing too serious though.
It was probably "tested" and supplied power while missing 3 bigger and 1 small caps on PPVIN_P3V8AON_ISNS line, in Q5800 and Q5820 vicinity
After...
A2485 820-02100
Never liquid damaged, never dropped, never opened before
No image on the screen 90% of the time.
Basing on observation of backlight intensity:
- ALS works
- backlight works
- I can adjust backlight via backlight keys
Macbook worked fine with external via thunderbolt. Got...
I have A1990 that died randomly during use, customer says image on the screen dissapeared when the device was on.
Board is in pristine condition, never dropped, no dust, zero signs of corrosion anywhere.
Trackpad clicks, its powering on and battery is charging. Both cpu and gpu getting warm...
A2442 02098
Liquid damage, data recovery is a priority
Lots of damage everywhere, I replaced and reworked 70-80% of stuff that I thought is critical
When I start diagnostics - 5V 0amp on cable, out of the chasis
After PMIC U8100 replacement I'm getting 5V 0.25-0.3 amp
Nothing is getting warm...
820-00850 board, zero signs of corrosion or any damage
Without the battery:
20V 0.135A - slowly rising to 225-230mA as the fans spin faster
Nothing heating up, CPU not even warm
T2 doesnt warm up
PPBUS_G3H 12.58V
PPVDDCPU_AWAKE goes as follows when plugging in power:
0.75V --> 0.51V -->...
Hey guys
Sorry but I have to ask for help, I’m stuck.
A1990 01041 liquid damage
55V on backlight - PPVOUT_S0_LCDBKLT
I have image and backlight on a screen from A2141.
Two known working A1990 screens give no backlight and no image with 55V on backlight
Touchbar works, keyboard backlight...
Hello
I've got A2141 2019 16 inch macbook pro touch bar, 01700.
Liquid damaged. backlight was shorted on the connector, I replaced following:
- display connectors and flex
- burned components and a connector around touchbar area
- mux chip
- display tcon board(corrosion)
Laptop boots normally...
Hello
I replaced a mux chip on a A2141,image on external but no image on the MacBook lcd
Is it possible for mux to be bad or badly soldered and have image on external?
Hey guys
Got A1534(820-00244) that is power cycling.
Takes 19-20V from the charger but cycles between 0A -> 240mA -> 415mA -> 0A
Bought it as broken, for parts. Someone took it apart before, stripped screws, stripped screw holes and metal shavings on the board.
Nosigns of any rework done on...
Hello
I am trying to find a tcon board for macbook pro A2141. Tried to look everywhere, does anyone has one and is willing to sell it to me? Or maybe someone knows where can I get those?