Repareer je spullen Gemeenschap Winkel

1.6 or 1.8 GHz dual-core processor, 2 GB or 4 GB of SDRAM, 64 GB or 128 GB SSD

192 Vragen Bekijk alle

Opties

MBA Won't turn on. Completely dead. See a resistor missing inside.

Hello,

Friend was about to toss a 2011 11” MBA because it was dead and they thought not worth repairing (won’t turn on and charger light also off when connected) . I opened it up and noticed there was residue on the logic board (see red square) and that this round item, which I’m guessing is a resistor, is missing (see red circle - 330). Comparing it to my MBA, which is nearly identical, I see no other missing pieces/differences.

Might anyone know what this part is/does and if replaced, could this potentially be the solution? Also, would replacing the logic board possibly get the laptop back up and running? Asking this second question because I’m wondering if I remove my logic board to test, would this be safe, or might I be risking my own as well (would only swap out to test this missing piece out).

Thoughts/suggestions/ideas?

Thanks!

Block Image

Block Image

Beantwoord! Bekijk het antwoord Dit probleem heb ik ook

Is dit een goede vraag?

Ja Nee
Score 1
Voeg een opmerking toe

2 Antwoorden

Filteren op:
Meest nuttige Nieuwste Oudste
Gekozen oplossing

Opties

@mba_fan

that is reference designator L6995 which is indeed a 33UH 20% 0.39A 0.43 Ohm fixed inductor (coil) Apple uses a Toko DP418C coil It is part of your 3.425V "G3Hot" Supply circuitry and as such a vital part for your MBA to start up. Yes, you can try your board but not sure what that is going to prove. You know your board is good. Replace the missing coil then re-evaluate the broken board.

Was dit antwoord nuttig?

Ja Nee
Score 1
Voeg een opmerking toe

Opties

The round part is an SMD choke coil inductance 330µH. If this is in the power path, without it, the path is interrupted and won’t work at all. Why this is missing is a mystery. Try replacing the part and testing.

Let us know the results.

Dan

Was dit antwoord nuttig?

Ja Nee
Score -1

2 opmerkingen:

@abrsvc again. The 330 on this inductor means 33µH The 0 (third number)is for how many trailing 0 there would be so a 331 would be 330µH

door

i thought I fixed that before submittion. Thanks for the catch.

door

Voeg een opmerking toe

Voeg je antwoord toe

S_G zal eeuwig dankbaar zijn.
Weergavestatistieken:

Afgelopen 24 uren: 0

Afgelopen 7 dagen: 0

Afgelopen 30 dagen: 1

Altijd: 202