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Aktuelle Version von: mayer ,

Titel:

short circuit on logic board, only two diagnostic lights now

Text:

i've got this late 2015 21.5" 4K iMac on my bench.  I had it open and was doing some work, and my son knocked my SPI programmer and a bunch of test leads onto the powered up logic board.

there was a brief crackle and a little wisp of smoke.

i had the iMac powered on, with three of the four diag lights on.  i expected the fourth off as i had the LCD panel removed.  now i'm only getting two green lights, and no display either with the LCD panel back on or via external monitor.

i have attempted SMC reset.

where can i start?

Gerät:

late 2015 iMaciMac Intel 21.5" Retina 4K Display
late 2015 iMaciMac Intel 21.5" Retina 4K Display

Status:

open

Ursprünglicher Beitrag von: Ronnoc Nailli ,

Titel:

short circuit on logic board, only two diagnostic lights now

Text:

i've got this late 2015 21.5" 4K iMac on my bench.  I had it open and was doing some work, and my son knocked my SPI programmer and a bunch of test leads onto the powered up logic board.

there was a brief crackle and a little wisp of smoke.

i had the iMac powered on, with three of the four diag lights on.  i expected the fourth off as i had the LCD panel removed.  now i'm only getting two green lights, and no display either with the LCD panel back on or via external monitor.

i have attempted SMC reset.

where can i start?

Gerät:

late 2015 iMac 21.5" 4K

Status:

open