Apple Technician Guide Imac (27-inch, Mid 2010) -

AMD Radeon HD 5670 (512MB) or HD 5750 (1GB GDDR5). Display: 27-inch LED-backlit IPS, 2560x1440 resolution. Essential Technician Tools Suction Cups: For safely lifting the front glass panel.

When replacing the HDD with an SSD, you must use a specific thermal sensor cable or third-party software (like Macs Fan Control ) to prevent the internal fans from running at maximum speed. Apple Technician Guide iMac (27-inch, Mid 2010)

Use a soft, non-abrasive surface to protect the glass and display when removed. Key Disassembly Steps AMD Radeon HD 5670 (512MB) or HD 5750 (1GB GDDR5)

Standard first steps for boot or power issues. Official Documentation & Manuals Apple Support: Official Manuals and Downloads . When replacing the HDD with an SSD, you

Place cups only in the upper corners of the glass to avoid damaging metal tabs along the bottom edge during removal.

Up to 3.6 GHz Intel Core i3 or i5 (Dual-Core); up to 2.93 GHz Intel Core i7 (Quad-Core).

A black display does not always mean a bad LCD or GPU; a broken video signal connector on the LCD can prevent the backlight from turning on entirely.