What Our Channel Is All About

[@shanemaher5150]

I like this channel, you just fix stuff and not waffle on. I just watch yourself and “Northbridge Fix”. I have used your tear downs in the past, which have been good. Keep up the good work. :)

[@PowerbookMedic]

Shane Maher Thanks for the support! Happy to be able to help!

[@f1lab535]

Good channel! I'll be following you keep up! I would like to ask you a question since i found you while searching for a fix to the problem i actually have... Imac intel 21.5".. No back light is the second problem and the first problem is fan spinning at full speed.... Speaking about The back ligh problem, i have dome doubts : -Power supply is delivering 11,75v to the board and the back light wires, when it turns on the 11,75v drop to 10v is it normal? -backlight_en is 2.9v, and backlight_pwr is 2.9v, are those signals low? I tried using to powersupply to supply 3.3v on bkl_en but no results -i have image on the screen so its not the gpu i assume (or can it be fixed by reflowing the gpu?) -tried different screen.. Same What is troubling me is that i dont have another imac to test at the moment so i can't know if its a power supply broplem or inverter or gpu or motherboard problem, i have, is the voltage drop from 11.75v to 10v normal? I tried to use the psu to turn on the motherboard and my psu show 12v but when i test with multimeter i get 10-9v and my psu is good,.. Any idea is welcome...

[@PowerbookMedic]

adel saidi Thanks for the compliment! What year is your iMac?

[@f1lab535]

@@PowerbookMedic 2011

[@f1lab535]

@@PowerbookMedic well, i reflowed the GPU 2 times and no results, you know, first time i did not heat for long just to see if is will fix the problem, and second time i reflowed like i always do, but still picture but no backlight.

[@PowerbookMedic]

adel saidi I believe on that model there is a part called an inverted board that powers the backlight. It is separate from the power supply. You may want to check that out.

[@f1lab535]

@@PowerbookMedic the inverter is supplying 10v to the Backlight LEDs. The Backlight en signal is reaching the inverter 2.9v as well as 2.9v for bklt_pwr

[@philg6757]

Thanks mate, you`ve been helpful. Saved me close to $400 AUD on a repair I did myself for $10.

[@PowerbookMedic]

Phil G That’s awesome! Happy to help!

[@gauthamjay2849]

love your teardowns very helpful!

[@PowerbookMedic]

Gautham Jay Thank you! Happy to help!

[@Rock_Appreciator]

Wish we saw ya again! Hope you're doing well!

[@computerworksuk]

Great video thanks! Do you ever use an oscilloscope? I’m not sure if I’ll need one for these type of repairs?

[@PowerbookMedic]

Mario Yiannakou Thanks! No, I don’t use one. It can be useful but not a necessity to do the repairs.

[@computerworksuk]

Lovely. Thanks for answering

[@linksrepair2851]

hi,i love your channel and the job you do,im learning how to repair laptops and macbooks and also phones,your videos are simple and straight forward and i have learn alot from you,thanks and keep bringing the videos.

[@PowerbookMedic]

Links repair Thanks so much! Appreciate the support!

[@coolmodel]

Hi i have macbook pro 15" mid 2014 a1398 emc2881 the screen had green and magenda colors usually as a circle around the edge and later had also lines .. and not there is no display just back light .. whats the problem could be ? Thx

[@excitedaboutlearning1639]

I've been watching Louis Rossman and Jessa Jones for a while now, and I stumbled upon your video on reading MacBook Schematics. I'm trying to learn how to read schematics. It seemed so daunting at first, but I feel like I'm getting much of it already. The lines really confuse me. I was reading the iPhone 4S schematics, and there's so many lines. I know about the dot telling that two lines are connected. If there's no dot, then the lines are not connected. Can you please make a video on how to make sense of the zillions of lines in a single schematics. E.g. The sequence. P.S. You might've already made a video on lines, but I decided to leave the request, anyway. Thank you for making videos!

[@PowerbookMedic]

Excited About Learning Great idea! I will try and make a video to answer your question soon.

[@chainph0thi605]

good

[@j.lietka9406]

how & where is the 820 - xxxx number found on an macbook pro A1502? thanks

[@PowerbookMedic]

J. Lietka It is located close to the I/O flex connector on the board.

[@Kuwandi]

Great content - I want to resurrect my mbp 15” 2012 -apple had a recall, on them , sadly the guy at the Apple store playedcmumm ‘stupid when I brought the laptop to them , knowing what the problem was , he ran the time on me and I no longer qualify for the recall deal..but I want to fix it ** call it sentimental

[@4Da_Tech]

Louis Rosman wanna be here.. jk jk. Keep up the good work buddy. Life is tough for us tech guys..