Hello friends please help remove the lock to this 2009 imac firmware, copy original BIOS.
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Hi everyone,
I am trying to repair my iMac A1312 late 2009 intel i5.
First of all it was booting but no screen on internal lcd but working with external one,
I tried:
- another screen and led power board (booting no screen - same as before)
- another mxm graphic card (not booting missing 3rd led)
* screen and mxm gpu tested are 100% working on another A1312 iMac.
I putted back the original mxm graphic card and what a surprise, now it's not booting anymore even with the stock parts.
The main... -
Bought an iMac 27inch 2009 core 2 duo version. Cannot power on when I first got it. So I dismantled it and check. Switch on the mains and the led 1 lights up, tried to power on, doesn't respond. So I was checking things out seeing if the connectors are in place. found the ODD fan wires loose, so I took it out and clean it up. Forgot to plug it back in and turn on the iMac. Saw the MOSFET D5600 smoking. Would like to seek for expert's help here, what could have caused the MOSFET to burn. What component should I buy to replace. Please refer to the attached picture....01-03-2022, 07:39 PM -
Problem
This is an LG edge LED lit LCD Display. The LEDs are on the bottom edge of the display. There are 2 bars (left and right) Each bar has many LEDs and a 6 pin connector. Each pin drive several LEDs thus is the highest current flow / heat junction. The weak lead free solder gradually fails with thermal expansion/contraction cycling and increases resistance. PSU will compensate up to a point, then when the current is too high, PSU just shut down the backlight causing a dark display. I have even seen one which the connector just fell off as solder points became completely detached.... -
Apple iMac 27" A1312 820-2901-A Board View...10-03-2024, 10:00 AM
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Hi guys. Hope you are having a great day. This imac iMac A1312 2011 27" with this logic board 820 - 2828. Came to the shop becouse it doesnt boot.I started the apple diagnostic and got 4mem error. I disassembled it, cleaned it and replaced the ram. For a little while it worked normally. But after a while it got to the same state. I tried changing all the ram with a good known working ones. Nothing, i tried a different drive to boot from, nothing. I tried to not boot from sata but i disconnected drive and connected only via usb. nothing. I tried to change the graphic card nothing. I dont have...