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Macbook Pro A1502 (820-4924-A) No power, has been to another repair centre. History { tried to replace clock IC u1900 , u7501 replaced 3.3v,5v regulator ,smc reballed ,c5649 and r5689 were missing and has been replaced but still same no power} I can see a little jumper from R5689 to C5689. any...

hi, I am afraid it was actually a bad LCD, even the spare I had.

it was a blown fuse and a bad backlight driver as mentioned in louis's post, sorted now Thanks for your help

its sorted, thanks for your help

Hi, macbook air A1466 820-00165-A failed backlight, the fuse was blown so I replaced it but no luck now I have 8.5v on backlight

hi yes the external video works only when the internal display is disconnected. no history of the fault available except it went for some other repair in a shop in Qatar, not working after that

Hi, I have a MacBook Air A1466 820-00165-A with weird colour lines on display, At first I thought its a broken LCD but it stays the same on another known good LCD and there's no display even on the HDMI ( the system seems to work fine as caps lock key lights up when pressed) any help would be...

I have Re Flashed the BIOS, it is still the same

CPU V core is 0v even on the other board (L7030 has 12.5V though)

what components do I check CPU core voltage on?

I have similar issue with another A1708 same board number, only one USB-C port was working, I replaced the port and now it does the same thing, Fan runs once when I reconnect the battery and the CPU and SSD warm up a bit but no display at all

yes its the same thing with everything disconnected

hi, the bios did not help its still the same, l7370 resistance is about 11+ohms now

resistance to ground at L7370 > 5.73-77 OHMS R7379 resistance>>11.3 Mili ohms, will try a known good bios and update you

Hi, these are the readings L7670-- 5.1V L7690--3.31V L8410--0V L7030--13.07V L7730--1.0V L7430--0V L7410--0V L7420--0V L7210--0V L7220--0V L7370--0V L8060--1V L7900--1V L7960--0.95V L8030--1.1V

hi @ 2informaticos no I have 0.250 on L7210

forgot to mention it pulls 19.83V and 0.265A with just the board connected to power supply and everything else disconnected and there is a tiny water damage sign like a little drop between R8401-R8402

Hello, I have a pro A1708 that's unresponsive, the fan spins for a few seconds if I disconnect and connect the battery and the Amp pull keeps going up gradually 0.8-3.0, it seems dead but the trackpad vibrates when touch, 13v present on L7030, both 'CD3215COO' as well as the SSD get warm after a...

Thanks @ 2informaticos, I am gonna try bypassing the SMC today