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Hi folks, Got a board here that is immaculate but *every* solder joint and every cap/resistor on the board is discolored. So this was liquid damaged and cleaned after. Been out of the game for a while and I primarily work on older machines so no idea where to start on this one. Unit draws...

Howdy, I know of the 15" 2010 model that has a simple fix replacing C9560 but now I have a 17" 2010 model with kernel panics. C9560 on the 17" is not 330µF so can't try to replace that one but before I start looking for a good replacement cap to try out (if not C9560 then whatever the 17"...

G'day folks, Repaired a 3115 with liquid damage and got it working by cleaning up a few small spots of corrosion and replacing U6990. As long as I leave the Wi-Fi and bluetooth disconnected (J3501) the machine runs great and passes all AHT and ASD tests, boots to a flash drive etc. With the...

hey folks, Got a 820 3437 that came in for no backlight. Replaced the backlight driver and now the backlight works for a second after the chime, then turns off. Any ideas on where I should start looking for the issue here? The driver works, backlight works but something is turning it off. This...

I've got an 820-00923 with no Wi-Fi. AHT confirms the no Wi-Fi but this machine is newer than what I typically work on so I'm not sure where to start. No liquid damage, no other damage. Machine works great except Wi-Fi. Any pointers? :) Looking at the schematic there is a lot more involved with...

This machine came in as "no power", history unknown. Connected to the PSU it drew a charge, fan would spin and CPU got warm. No POST or boot. Took it apart and found corrosion on C0890 and C089, small spot. Cleaned it up and found one of the caps shorted to ground. Replaced both caps and unit...

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G'day folks, Got a 2015 13" Retina here that doesn't recognize SSD's. Visually there is nothing wrong with the board that would point to a cause for this issue. Tested several SSD's all have the same issue. Techtool pro DOES show the SSD under SMART check but can't run the test. AHT shows the...

Hi folks, I need some backlight drivers but rossmanngroup is sold out (I typically order from there). So I look for LP8550 on mouser and find 3 results, all of which appear identical in their datasheets. https://www.mouser.com/Search/Refine.aspx?Keyword=LP8550 Can I get a pointer as to which...

Hi folks, I just got an ultrasonic cleaner. Crest P1200D-45. Included instructions are limited to the operation of the hardware so I'm wondering if someone here can give me a few good starting points. I got Branson EC, distilled water, ready to mix 5 parts cleaner to 100 parts water and operate...

This 820-3115 came in with no power, history unknown. No liquid damage. or any other kind of damage I can spot. Initially found the PPDCIN to fluctuate slightly. Traced this back to starting point at Q7080. Replaced Q7080 and the fluctuation was gone. Now PPBUS was low at 4volts. Replaced...

Issue: Mac runs very slow. No drop or liquid damage I'm aware of, board has normal dust but overall looks good. ASD continually fails the palmrest temp sensor test and the CPU thermal test. Fans spin up shortly after boot and stay on high. Tested with different KG trackpads (and their...

- No liquid damage - No drop damage - Minor dust on board - No solderballs found around RAM or other components I can't find any visual issues on this board. U8900 was resoldered as I do out of habit/precaution with these boards. The machine experiences random shutdowns. Powers on fine, POSTs...

History unknown but no signs of liquid damage or drop damage to the case. 3 beeps on boot and fan goes 100% within 20 sec. No solder balls around RAM area or CPU area. From another post I read "I just know that 3 beep boards when L7330 has 1.5V are a nightmare." I get 1.5V on L7330... smiba...

Took a while but got my first retina board with a RAM issue. A visual inspection showed L7710 with half of the top missing (can see inside the coil) and a few solder balls on/stuck to C7714 and C7715. No other visual cues and as far as I know, these backlight parts have nothing to do with the...

Liquid damaged board, replaced U7200 and surrounding components. All measurements as they should be. Checked unwire circuit and PP3V42, SMC_BC_AOK are present. Power draw on PSU 0.019 - 0.025. PPBUS_G3H = 12.6V PPBUS_S5_HS_COMPUTING_ISNS = 12.6V PPBUS_S5_HS_OTHER_ISNS = 12.6V PPDCIN_G3H = 16.09...

Hi folks, Can someone point me to a site/service where I can find this part? Searched on eBay etc but can't find the connector. Taking from a donor board is not an option as it it either melts or never comes off and I'm done wrecking boards for connectors I destroy anyway. Any help appreciated!

820-4924 that had no power and no light on the MagSafe. Replaced Q7180 and U7100. Magsafe LED now works but PPBUS_G3H is only 1V. Same after Q7130 was replaced. Power draw on PSU is 0.017 amps. History unknown, no liquid damage spotted. The schematic I have is password protected so can't...

A 820-3476 with no visible liquid damage but liquid damage is suspected (fan is gross but board is immaculate...). When powered on the fan spins, screen turns on and you can hear the chime. A few seconds after the chime you hear the chime again and before the chime can fully play, it chimes...

820-3476 came in as "powers on but no boot or video" but I get no power. PSU draws 0.109amps and SSD gets warm, without SSD the draw is just 0.030amps. Light on MagSafe is orange, no fan spin. Checked all the rails and PPBUS_G3H (12.6V) - PP3V3_S5 (3.3V) all check out. PP3V3_S4 is 0.445V but...