iMac display not working

Question

iMac Intel 21.5" EMC 2389

Model A1311 / Mid 2010 / 3.06 & 3.2 GHz Core i3 or 3.6 GHz Core i5 Processor

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Shailender Rachamalla @shool_cool

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发帖于: 2015年12月21日

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iMac display not working

I have an iMac 2010, 21,5" which has hardrive problem and replaced it. While connecting its LCD with display connector cable, the cable got damaged at one end. I got new display-port connector cable, but still display is not working.

When I connected with external monitor, its working fine.

I asked at a local repair store they told me that it was either the LCD panel, or the SATA/Board (Logic board?) which would even be more expensive.

I thought its a LCD problem, got LCD from ebay but still the display is not working.

I did a SMC/PVRAM Reset, but this did not solve the problem.

I used flashlight and cant see anything on the internal screen.

My question is whether it's possible to determine if it is the logic board, cable connection, the Backlight controller or the LCD-Panel.

Thanks for your answers,

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Fans running at full speed too?

由 mayer 完成的 2015年12月21日

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score 1 · Answer 1 · 2015-12-21T19:02:51-07:00

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Alex @alexfixtech

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iSmartRepair - Smart devices & board repair

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You should try the diag leds first to see if its the lcd. They are just above the mic connector on the logic board. The #4 led is green if the lcd is making connection with the motherboard. If the #4 led is green, maybe the motherboard defective because you changed the lcd and the lcd cable allready.

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I did check the LED, #1 LED green, #2 LED green, #3 LED green but #4 LED is off.

由 Shailender Rachamalla 完成的 2015年12月22日

If you allready changed the lcd and the lcd cable i am thinking about the motherboard connector. Try to change the lcd temp cable the thin one.

由 Alex 完成的 2015年12月22日

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