How to Replace the OBDSTAR Classic G3 Board for Repair

OBDSTAR X300 Classic G3 expands on the features and functionality of the OBDstar X300 DP Plus key programming series and will have the ability to add the functionality of the OBDstar Odomaster mileage correction, P50 airbag reset, MT series test platform and DC706 ECU ECM TCM BCM BSI cloning tool.

But if the tablet is broken need to repair or exchange PCB, how to solve this ?

Here we share steps.

First Step:Disassembly

Step 1:
a. Remove the rubber case.

b. Use a screwdriver to loosen and remove the hex socket screws

Step 2: Open the back cover and press down on the battery connector clip with your hand, then pull out the battery connector.

Step 3: Remove the antenna marked by the arrow. Use a screwdriver to loosen the screws securing the Android board and remove the Android board.

Step 4: Peel off the acetate tape at the screen flex cable connection. Remove the LCD screen and TP (touch panel) cable, and unplug the speaker cable. Use a screwdriver to loosen the screws securing the mainboard and the coil, then remove the mainboard and the coil.

Step 5:
a. Set the soldering iron temperature to 350 ± 10°C and desolder the coil to remove it.

b. Unplug the camera flex cable and use a screwdriver to loosen the screws securing the
camera, then remove the camera.

c. Peel off the adhesive at the bottom of the conductive foam and remove it. (If the new
mainboard comes with conductive foam already attached, this step is not necessary. Be
careful when peeling off the conductive foam as it can easily be damaged.) Disassembly
is complete.

Second Step: Installation
Step 1:
a. Take the new mainboard, install the camera, secure it with screws, and connect the camera flex cable.

b. Attach the conductive foam.

c. Insert the Android board and secure it with screws.

Step 2:
a. Set the soldering iron temperature to 350 ± 10°C and solder the coil.

b. Keep the screen flex cable clear of the area where the main board will be installed. Align
the mainboard with the housing connectors, and ensure the coil is installed before fully
securing the mainboard to avoid pulling the wires and causing damage. Then, install the
mainboard.

Step 3:
a. Use a screwdriver to secure the mainboard with screws.

b. Secure the coil bracket with screws. c. Connect the LCD screen flex cable and the TP flex cable (with the white line facing up). After connecting, apply acetate tape to both the connector and the flex cable. d. Connect the speaker cable and secure the antenna.

Step 4: Insert the battery connector, reassemble the back cover, and press the power button to turn on the device. If it starts up normally, the replacement is successful.