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Hi, I have an 3115 that had no green light, I replaced Q5490 as it was black and the board came back to life got a green light again and 12.6v on PPBUS.. After I ultrasonic-ed it the green light was going on/off all the time like 3 seconds off, 1 second on. SMC_RESET_L is pulsing between 0 and...

Hi guys I have an 820-00165 that was liquid damaged, replaced U5480 as there was the spil and ultrasoniced it board looks very clean overall. The Mac turns on and has all voltages, I can see the display turning on but no drive is recognized. External drive also does not work. Voltages I get on...

Replaced the I/O Board and working fine now, thanks so much guys!

Hi guys I have an air 2015 with a display that turns on/off all the time, or rather there is an image and then its gone after a while it flashes and comes back, and gone again. No liquid spills. Here's some info - Replace U7701 for good measure, I got 24v on LCD and backlight seems to work but...

Ok the second one i got works with a good working display. SO thats gonna be an easy one :). For the other one waiting for the U4700 and i will just try to swap it see if it makes a difference. I dont expect so, as there is no short there.

OK will try, the first one i got didnt work with a good known display, but now I just got another one in exactly the same issue. All voltages upto 1.05 sus are present but no display.

worth a try, all seems to be OK all voltage is there no shorts also not on U4700

Resistance to ground on PP3v42 = 2.586k ohm

Hi fellows, I have this 3437 that came in liquid damaged. It was quite dirty so I ultrasoniced it first. Now the mac chimes and boots showing the apple logo. Then a vertical short line appears in the bottom and the apple logo is gone. The mac is still running though, and the backlight is tumed...

I guess its time for another visit to store.rossmanngroup.com :)

Hi Guys I have a 2838 that was just dead. No signs of liquid spil. Replaced U7201 and now i got fanspin and orange light, however its not booting. CPU gets hot, I have 32clk on Y2810. CPU Vcore is 1V (should it be 1.25?). Will check now U6100 but cant find i.e. U1900/1950. Im not experience with...

I have an 3437 that actually has a spinning fan but no chime / display. Saw some corrosion under the JTAG and removed it. There is a hole in the board under pin 5 LPC_AD, could this be the issue or is this not important for booting?

Hi I have a Macbook 12 inch with no display external and internal also tried a good working display. The machine is turning on as all powerstates are there including S0 and cpu gets warm and has power. Display is missing backlight power as well as 5V, 3.3v is present. Q7706 has 8.6v on pin 3/4...

Found out the 5V was also missing, related to the C7555, the line to L4820 was broken, so I pulled a wire from L4820 to C7555 and working again, thanks for the help guys.

Yes I tried that, another cable. As for R4830, can we also make a jumper wire cause its 0 ohm?

Got a Mac air of which the trackpad is frozen. Keyboard works. I changed the trackpad, same result. Measuring pin 10 of the trackpad connector it showed 0.5-1V not 3.3. After removing the board and no trackpad connected, its 3.3v. R4830 os 0 ohms as it should be. Any ideas? On a sidenote, there...

For these 2016's I dont think we can change the cable its glued under the display, so a new display looks like the only solution. I know about the A1502's these LVDS Cables are easy to replace.

Hi Guys, I already have like 5 units with the same issue as described by my customer below: "I have a problem with my MacBook. The screen suddenly became black and now it's still black. The computer is fine to plug into external monitor so I think just the screen is the problem. Also the screen...

I replaced already 10 keyboards only, not too difficult but make sure to charge double the price compared to the A1502 just because as Duke says, it kinda sucks! And make sure to use the rightkey board as after installation you do not want to have to remove it again.....

Thanks for the replies guys much appreciated!