根据网上进行reset pram, smc, 都无法恢复

请教各位

⟐ Answered 八月 18, 2025 at 9:57 GMT-7

⟐ Answered 九月 24, 2024 at 20:24 GMT-7

我只用了一年多

⟐ Answer accepted 七月 28, 2026 at 7:50 GMT-7

I have everything you need (or so I think) to use my imac lcd panel (panel LM240WU2 ( SL) ( B4 ) ) as a monitor for other pc

http://i62.tinypic.com/112e876.jpg

http://i61.tinypic.com/2mwxct2.jpg

also I connect the cable from the inverter to the lcd

this http://i59.tinypic.com/f10dts.jpg to http://i57.tinypic.com/f2itxd.jpg

Connect the power cord from the iMac ( white ) energy to the panel. and I connect the power adapter to the board vga 12V 2A

but does not work , connect via a PC to give vga video signal and does not work

do I wrong ?

Help please :(

⟐ Answer edited 七月 25, 2026 at 5:17 GMT-7

⟐ Commented 七月 24, 2026 at 12:23 GMT-7

I have now created a flash drive with Mac OS El Capitan on it, but when I start the machine and hold down Alt on my keyboard, it boots straight into Mint and does not let me select the installer USB.

Any idea what's going on?

⟐ Answered 七月 24, 2026 at 10:34 GMT-7

⟐ Answered 七月 20, 2026 at 16:54 GMT-7

It’s not the display or the cable as I’ve tried both on another iMac 5K.

I’ve seen this (the logic board connector) referred to as a LVDS or a special eDP connector.

*Where can I buy this? And can I find someone to solder/replace it for me?

I’ve also tried reseating the cables with no luck. Is there something else I could try?

It’s one of the i7 models with m395x. I’d hate to junk it.

⟐ Commented 七月 13, 2026 at 11:39 GMT-7

⟐ Commented 七月 09, 2026 at 11:04 GMT-7

⟐ Answer edited 七月 05, 2026 at 3:18 GMT-7

I have an iMac 2009, 21,5" which has been working well until last week. First there was some flickering and sometimes a black display. Since yesterday the display seems not to work anymore.

I have found the apple technicians guide for this iMac online and tried some of the solutions described there. I did a SMC/PVRAM Reset, but this did not solve the problem.

To determine if it's the gpu I connected an external monitor -> everyhing working fine on the external monitor.

It seems that the LED backlight isn't working anymore, because if you use a flashlight you can see everything on the internal screen.

I asked at a local repair store but they told me (without looking at the device...) that it was either the LCD panel, which would cost almost 500€/650$ to replace or the SATA/Board (Logic board?) which would even be more expensive.

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

Thanks fpr your answers,

Max

⟐ Commented 六月 27, 2026 at 12:28 GMT-7

I deconstructed my iMac and made it into a functioning external monitor after it broke.

I want to re use the iSense camera by making it a USB device. I have heard of people soldering the cables onto a USB for use. The issue is, there is 7 wires and I am not sure which wires to attach to the USB as they only have 4 connections. I have attached an image.

Thanks in advance

⟐ Commented 六月 22, 2026 at 8:01 GMT-7

But what I don't know is if I can only upgrade to a low power chip (S suffix) or if I can upgrade to a full power desktop chip (no suffix). I've seen people upgrade their i5 2400S 27" iMacs to i7 2600, but I've never seen anyone tried a CPU upgrade on a 21.5" imac before let alone the highest end CPU offering from Apple on the 21.5" Mid-2011 iMac is only an i7 2600S.

Now the performance difference between the i7 2600S and i7 2600 is negligible for me, but the problem is I can't souce any i7 2600S but I can fine loads of people selling their i7 2600.

So if anyone can answer, please do as I will apreciate it greatly and if anyone is selling or knows someone who sells an i7 2600S that can ship to Indonesia please answer too. :) Thanks in advance.

⟐ Commented 六月 14, 2026 at 2:13 GMT-7

Turns out iFixit sent me one too many adhesive stripes of the same type and left the other one out. Iam missing the 02 adhesive strip and have the 01 adhesive strip two times.

I have now cut it in proper form and was wondering if I would have to redo this job once ifixit will provide replacement.

I couldnt leave it open and the glass laying around as I got a little kid at home.

here are some Images:

looking forward to your replies. I really dont want to do this again. It seems like it would only be 2/3% of the adhesive strip missing, I personally think its fine as it will stand on a desk and be rarely touched.

Thanks in advance!

⟐ Commented 六月 09, 2026 at 1:56 GMT-7

⟐ Edited by author 六月 05, 2026 at 18:46 GMT-7

⟐ Answered 五月 27, 2026 at 6:05 GMT-7

⟐ Commented 五月 11, 2026 at 7:45 GMT-7