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For LED backlight board implemented on iMac 27” mid 2011 model, I found there are at least two designs Apple uses, 612-0084 and 612-0094, they look totally different with different connection type on the board, etc. Does anyone know the difference between these two types? And are they switchable? Thanks,
From TheBookYard 4-Pin iMac 27" LED Backlight Board V1 (4-Pin) This is the first revision of the backlight board. To differentiate between the two versions, you will need to confirm how many pins the V-Sync socket has on your current board, as the backlight board needs to match your LCD version. (unfortunately, apple use the same part number for both, so they cannot be differentiated in any other way) This version of the backlight board has a 4-pin V-Sync socket.The EEE codes that match this version are as follows:LCD EEE: DJ4KBacklight Board EEE: HQH, HQG(to identify the EEE code, please look at the serial number of the part itself, not of the machines serial number. it will be as follows XXXXXXXXEEEX) 8-Pin iMac 27" LED Backlight Board V2 (8-Pin) This is the second revision of the backlight board. To differentiate between the two versions, you will need to confirm how many pins the V-Sync socket has on your current board, as the backlight board needs to match your LCD version. (unfortunately, apple use the same part number for both, so they cannot be differentiated in any other way) This version of the backlight board has a 8-pin V-Sync socket.The EEE codes that match this version are as follows:LCD EEE: DL1MBacklight Board EEE: DDHQ, DJ5T(to identify the EEE code, please look at the serial number of the part itself, not of the machines serial number. it will be as follows XXXXXXXXXXXXEEEEX)
