Saltar al contenido principal

Repara tus cosas

Derecho a reparar

Tienda

Ayuda

Versión actual por: oldturkey03 (detalles del voto) ,

Título:

No power on, no trickle voltage on logic board, blown Mosfet

Texto:

Hi all.

We have a suspected power surge on a late model iMac.

Logic board ID 820-3588 , power supply tested OK and swapped in known working power supply.

Symptoms;

1. No Trickle diag LED at all

2. No power on  , chime etc

Blown Q7610 dual N channel mosfet which is a FDMS3602s FET

http://www.mouser.com/ds/2/149/FDMS3602S-1007857.pdf

No other liquid or burn marks on board itself.

Mosfet appears to have shorted or had voltage applied beyond its limits.

Fet failed dramatically after a few power on attempts and was not blown initially on inspection.

Have replaced part with exact match , no power on yet fet is intact thus far.

Anyone else seen anything like this?

Dispositivo:

iMac Intel 21.5" EMC 2638

Estatus:

open

Respuesta Aceptada:

424146

Duplicado de:

424057

Editado por: markduff ,

Título:

No power on, no trickle voltage on logic board, blown Mosfet

Texto:

Hi all.

We have a suspected power surge on a late model iMac.

Logic board ID 820-3588 , power supply tested OK and swapped in known working power supply.

Symptoms;

1. No Trickle diag LED at all

2. No power on  , chime etc

Blown Q7610 dual N channel mosfet which is a FDMS3602s FET

http://www.mouser.com/ds/2/149/FDMS3602S-1007857.pdf

No other liquid or burn marks on board itself.

Mosfet appears to have shorted or had voltage applied beyond its limits.

Fet failed dramatically after a few power on attempts and was not blown initially on inspection.

Have replaced part with exact match , no power on yet fet is intact thus far.

Anyone else seen anything like this?

Dispositivo:

iMac Intel 21.5" EMC 2638

Estatus:

open

Duplicado de:

399362424057
399362424057

Editado por: mayer (detalles del voto) ,

Título:

No power on, no trickle voltage on logic board, blown Mosfet

Texto:

Hi all.

We have a suspected power surge on a late model iMac.

Logic board ID 820-3588 , power supply tested OK and swapped in known working power supply.

Symptoms;

1. No Trickle diag LED at all

2. No power on  , chime etc

Blown Q7610 dual N channel mosfet which is a FDMS3602s FET

http://www.mouser.com/ds/2/149/FDMS3602S-1007857.pdf

No other liquid or burn marks on board itself.

Mosfet appears to have shorted or had voltage applied beyond its limits.

Fet failed dramatically after a few power on attempts and was not blown initially on inspection.

Have replaced part with exact match , no power on yet fet is intact thus far.

Anyone else seen anything like this?

Dispositivo:

iMac Intel 21.5" EMC 2638

Estatus:

open

Duplicado de:

399362

Editado por: mayer ,

Título:

No power on, no trickle voltage on logic board, blown Mosfet

Texto:

Hi all.

We have a suspected power surge on a late model iMac.

Logic board ID 820-3588 , power supply tested OK and swapped in known working power supply.

Symptoms;

1. No Trickle diag LED at all

2. No power on  , chime etc

Blown Q7610 dual N channel mosfet which is a FDMS3602s FET

http://www.mouser.com/ds/2/149/FDMS3602S-1007857.pdf

No other liquid or burn marks on board itself.

Mosfet appears to have shorted or had voltage applied beyond its limits.

Fet failed dramatically after a few power on attempts and was not blown initially on inspection.

Have replaced part with exact match , no power on yet fet is intact thus far.

Anyone else seen anything like this?

Dispositivo:

iMac logic board 820-3588Intel 21.5" EMC 2638
iMac logic board 820-3588Intel 21.5" EMC 2638

Estatus:

open

Aporte original por: markduff ,

Título:

No power on, no trickle voltage on logic board, blown Mosfet

Texto:

Hi all.

We have a suspected power surge on a late model iMac.

Logic board ID 820-3588 , power supply tested OK and swapped in known working power supply.

Symptoms;

1. No Trickle diag LED at all

2. No power on  , chime etc

Blown Q7610 dual N channel mosfet which is a FDMS3602s FET

http://www.mouser.com/ds/2/149/FDMS3602S-1007857.pdf

No other liquid or burn marks on board itself.

Mosfet appears to have shorted or had voltage applied beyond its limits.

Fet failed dramatically after a few power on attempts and was not blown initially on inspection.

Have replaced part with exact match , no power on yet fet is intact thus far.

Anyone else seen anything like this?

Dispositivo:

iMac logic board 820-3588

Estatus:

open