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Current version by: Pushpinder ,

Title:

Blown L9000 for LCD power connector

Text:

I have 27" iMac mid 2011 which required LCD replacement. I bought another dead iMac to pull lcd and Led inverter board. As soon as I plugged it and blew L9000. iMac stills boots with chime but no display(not surprised) with fans running full speed. Closely inspecting i saw broken data cable for new lcd. So my questions are:
 
1)Could the bad data connector have caused this?
 
2) Can bad LCD or LED backlit be cause of this, if yes how to test it?
 
3) Can I take this connector and take input from somewhere else example solder wires to to 12 v supply from power supply or use other backlight power?
 
6) Is there any schematic available for the graphics card connector and lcd connectors?
 
Picture of logic board, connector and potential connector attached. The one in picture is in bad shape, other logic board has only L9000 burned out. I will post pictures after cleaning it up.
 
[image|1476223]
 
[image|1476225]
 
[image|1476224]
 
[image|1476228]
 
UPDATED PICTURE
 
[image|1481365]
[image|1481365]
 
POTENTIAL DONOR
 
[image|1481420]

设备:

iMac Intel 27" EMC 2429

Status:

open

Accepted Answer:

492734

Edit by: Pushpinder ,

Title:

Blown L9000 for LCD power connector

Text:

I have 27" iMac mid 2011 which required LCD replacement. I bought another dead iMac to pull lcd and Led inverter board. As soon as I plugged it and blew L9000. iMac stills boots with chime but no display(not surprised) with fans running full speed. Closely inspecting i saw broken data cable for new lcd. So my questions are:
 
1)Could the bad data connector have caused this?
 
2) Can bad LCD or LED backlit be cause of this, if yes how to test it?
 
3) Can I take this connector and take input from somewhere else example solder wires to to 12 v supply from power supply or use other backlight power?
 
6) Is there any schematic available for the graphics card connector and lcd connectors?
 
Picture of logic board, connector and potential connector attached. The one in picture is in bad shape, other logic board has only L9000 burned out. I will post pictures after cleaning it up.
 
[image|1476223]
 
[image|1476225]
 
[image|1476224]
 
[image|1476228]
[image|1476228]
 
UPDATED PICTURE
[image|1481365
[image|1481365]

POTENTIAL DONOR
[image|1481420
]
[image|1481365
[image|1481365]

POTENTIAL DONOR
[image|1481420
]

设备:

iMac Intel 27" EMC 2429

Status:

open

Edit by: Pushpinder ,

Title:

Blown L9000 for LCD power connector

Text:

I have 27" iMac mid 2011 which required LCD replacement. I bought another dead iMac to pull lcd and Led inverter board. As soon as I plugged it and blew L9000. iMac stills boots with chime but no display(not surprised) with fans running full speed. Closely inspecting i saw broken data cable for new lcd. So my questions are:
 
1)Could the bad data connector have caused this?
 
2) Can bad LCD or LED backlit be cause of this, if yes how to test it?
 
 
3) Can I take this connector and take input from somewhere else example solder wires to to 12 v supply from power supply or use other backlight power?
 
 
6) Is there any schematic available for the graphics card connector and lcd connectors?
 
Picture of logic board, connector and potential connector attached. The one in picture is in bad shape, other logic board has only L9000 burned out. I will post pictures after cleaning it up.
 
[image|1476223]
 
[image|1476225]
 
[image|1476224]
 
[image|1476228]

UPDATED PICTURE
[image|1481365]
[image|1476228]

UPDATED PICTURE
[image|1481365]

设备:

iMac Intel 27" EMC 2429

Status:

open

Edit by: Pushpinder ,

Title:

Blown ICL9000 for LCD power connector and schematic
Blown ICL9000 for LCD power connector and schematic

Text:

I have 27" iMac mid 2011 which required LCD replacement. I bought another dead iMac to pull lcd and Led inverter board. As soon as I plugged it and blew IC components at 6 wire connector on logic board. iMac stillsL9000. iMac stills boots with chime but no display(not surprised) with fans running full speed. I looked at the dead iMac i bought, it also had blown chips as same location but is completely dead. Closely Closely inspecting i saw broken data cable for new lcd. So my questions are:
I have 27" iMac mid 2011 which required LCD replacement. I bought another dead iMac to pull lcd and Led inverter board. As soon as I plugged it and blew IC components at 6 wire connector on logic board. iMac stillsL9000. iMac stills boots with chime but no display(not surprised) with fans running full speed. I looked at the dead iMac i bought, it also had blown chips as same location but is completely dead. Closely Closely inspecting i saw broken data cable for new lcd. So my questions are:
 
1)Could the bad data connector have caused this?
 
2) Could there have been a back feed fromCan bad LCD that may have caused this(short circuit from led inverter)or LED backlit be cause of this, if yes how to test it?
2) Could there have been a back feed fromCan bad LCD that may have caused this(short circuit from led inverter)or LED backlit be cause of this, if yes how to test it?
 
3) What does this connector feed in the monitor, is it 12 V supply (3 wire for positive and 3 for negative or ground)?
 
43) Can I take this connector and take input from somewhere else example solder wires to to 12 v supply from power supply or use other backlight power( hoping data side on logic board is still fine)power?
43) Can I take this connector and take input from somewhere else example solder wires to to 12 v supply from power supply or use other backlight power( hoping data side on logic board is still fine)power?
 
5) Do you guys think LCD is bad, if thats the case then is it advisable to fix this iMac ?
 
6) Is there any schematic available for the graphics card connector and lcd connectors?
 
Picture of logic board, connector and potential connector attached. The one in picture is in bad shape, other logic board has only L9000 burned out. I will post pictures after cleaning it up.
Picture of logic board, connector and potential connector attached. The one in picture is in bad shape, other logic board has only L9000 burned out. I will post pictures after cleaning it up.
 
[image|1476223]
 
[image|1476225]
 
[image|1476224]
 
[image|1476228]

设备:

iMac Intel 27" EMC 2429

Status:

open

Edit by: Pushpinder ,

Title:

Blown IC for LCD power connector and schematic
Blown IC for LCD power connector and schematic

Text:

I have 27" iMac mid 2011 which required LCD replacement. I bought another dead iMac to pull lcd and Led inverter board. As soon as I plugged it and blew IC components at 6 wire connector on logic board. iMac stills boots with chime but no display(not surprised) with fans running full speed. I looked at the dead iMac i bought, it also had blown chips as same location but is completely dead. Closely inspecting i saw broken data cable for new lcd. So my questions are:
 
1)Could the bad data connector have caused this?
 
2) Could there have been a back feed from LCD that may have caused this(short circuit from led inverter)?
 
3) What does this connector feed in the monitor, is it 12 V supply (3 wire for positive and 3 for negative or ground)?
 
4) Can I take this connector and take input from somewhere else example solder wires to to 12 v supply from power supply or use other backlight power( hoping data side on logic board is still fine)?
 
5) Do you guys think LCD is bad, if thats the case then is it advisable to fix this iMac ?
 
6) Is there any schematic available for the graphics card connector and lcd connectors?
 
Picture of logic board, connector and potential connector attached.
 
[image|1476223]
 
[image|1476225]
 
[image|1476224]
 
[image|1476228]

设备:

iMac Intel 27" EMC 2429

Status:

open

Original post by: Pushpinder ,

Title:

Blown IC for LCD power connector

Text:

I have 27" iMac mid 2011 which required LCD replacement. I bought another dead iMac to pull lcd and Led inverter board. As soon as I plugged it and blew IC components at 6 wire connector on logic board.  iMac stills boots with chime but no display(not surprised) with fans running full speed. I looked at the dead iMac i bought, it also had blown chips as same location but is completely dead. Closely inspecting i saw broken data cable for new lcd. So my questions are:

1)Could the bad data connector have caused this?

2) Could  there have been  a back feed from LCD that may have caused this(short circuit from led inverter)?

3) What does this connector feed in the monitor, is it 12 V supply (3 wire for positive and 3 for negative or ground)?

4) Can I take this connector and  take input from somewhere else example solder wires to to 12 v supply from power supply or use other backlight power( hoping data side on logic board is still fine)?

5) Do you guys think LCD is bad, if thats the case then is it advisable to fix this iMac ?

Picture of logic board, connector and potential connector attached.

[image|1476223]

[image|1476225]

[image|1476224]

[image|1476228]

设备:

iMac Intel 27" EMC 2429

Status:

open