HTC Desire 620 - Motherboard

Guide with all the steps necessary to change the HTC Desire 620 motherboard yourself.

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Tutorial: Step by step

Step 1 HTC Desire 620

Characteristics:
Dimensions: 150.1 x 72.7 x 9.6 mm.
Weight: 145 g.
Display: Super LCD capacitive touchscreen, 16M colors, 720 x 1280 pixels, 5.0 inches.
Memory: 8GB internal storage, 1GB RAM, microSD up to 128GB.
Processor: Qualcomm Snapdragon 410 quad-core 1.2GHz processor, Adreno 306 GPU.
Rear camera : 8MP with AutoFocus and 1080p video.
Front camera : 5MP.
Battery: Standard, Li-Po 2100 mAh.
Operating system: Android OS, v4.4.4 KitKat.

Step 2 Back case

As usual, we will start by removing the back cover. Using a plastic opening tool, we will disengage the screen from the notches that hold it by making lever movements.

Step 3 Remove battery

After removing the back cover, we have access to the battery, which we will remove by using the opening tool.

Step 4 Sim and microSD cards

To remove the SIM and microSD cards we can help with the opening tool or simply by pulling them.

Step 5 Intermediate housing screws

In order to remove the intermediate casing we will have to first remove the twelve Phillips screws (PH # 00) that fasten it to the chassis.

Step 6 Unhook intermediate housing

We will start unhooking the notch that is next to the battery connectors so that we do not forget later.

Now, with the opening tool or another plastic tool, we will unhook the housing from the notches in the chassis.

Step 7 Disconnect components

In this step we disconnect the flex from the display, the coaxial cable and remove the screws that hold the plate.

Step 8 Removing the motherboard

We will leverage with some plastic tool to disengage the screen.

Step 9 Undo vibrator

To leave the motherboard without more components we will have to desolder the vibrator. We will finish using desoldering mesh to clean the contacts (in case the plate still works).

Step 10 Remove components

With the vibrator already desoldado we can take it off. Now we will disconnect the proximity sensor and the front camera.

Step 11 Motherboard

Finally, we disconnected the rear camera from the motherboard.

Video Tutorial summary

In this video you can watch a quick summary of the tutorial, but we recommend to follow the complete tutorial, with its explanations and detailed images.
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