Samsung Galaxy tab 7 Battery replacement, disassembley

How to replace the battery of Samsung galaxy tab 7

Use the flat end of a metal Spurger to pry the two plastic tabs near the dock connector off the rear case. Remove the two 4.1 mm Tri-Wing screws near the adjacent edges of the dock connector.

The following steps will require you to disengage several clips (highlighted in red) around the perimeter of the rear case. The clips are delicate and fragile; proceed with caution.

Disclaimer: The Galaxy Tab we acquired already had a shattered front glass panel. However, the procedure outlined in this guide is identical for both intact/shattered front panels. nsert a plastic opening tool near the bottom left edge of the rear case. Use your plastic opening tool to gently create a small gap between the front panel and the ear panel near the bottom left edge. Run the plastic opening tool along the left side of the perimeter to create a bigger gap between the front panel and the rear panel. Insert two guitar picks into the small gap created by the plastic opening tool.

Insert the plastic opening tool into the dock connector and wedge it underneath the front panel/motherboard assembly. Thrust the plastic opening tool downwards to create a gap near the lower left corner of the front panel assembly. Insert a guitar pick into the newly created gap near the lower left edge of the Galaxy Tab.

Be careful when approaching the top left corner of the Galaxy Tab. Be sure to follow the next step carefully. When separating the front panel from the top left corner of the Galaxy Tab, be careful not to rip the microphone ribbon cable (highlighted in red in the first picture). It is extremely thin and easy to tear. Insert a plastic opening tool into the gap next to the left side of the guitar pick. Make sure to wedge it underneath the inner framework to gain the most leverage when releasing the clips. Simultaneously lift upwards and run the plastic opening tool along the top left corner of the Galaxy Tab to free the Front Panel Assembly from the retaining clips.

Slightly lift the left side of the front panel assembly to separate it from its housing within the rear panel. Do not completely lift the front panel assembly, as it is still restrained to the rear panel by clips around the top, bottom, and right sides. Doing so may cause severe damage.

Wedge the flat edge of an opening tool between the front panel and rear panel near the dock connector. Use a plastic opening tool to pry the bottom right corner out of its housing in the rear panel.

Lift and remove the front panel assembly from the rear panel.

Remove the single Phillips screw securing the battery to the motherboard.

Use the edge of a plastic opening tool to pry the battery connector straight up off its socket on the motherboard.

Lenovo ideapad 300 – How to disassemble – How to test the charger – How to Remove the keyboard – how to remove the HDD

Lenovo ideapad 300 Disassemble procedure

To verify a symptom, follow the steps below:
1. Turn off the computer.
2. Remove the battery pack.
3. Connect the AC adapter.
4. Make sure that power is supplied when you turn on the computer.
5. Turn off the computer.
6. Disconnect the AC adapter and install the charged battery pack.
7. Make sure that the battery pack supplies power when you turn on the computer.
If you suspect a power problem, see the appropriate one of the following power supply checkouts:
“Checking the AC adapter”
“Checking operational charging”
“Checking the battery pack”
Checking the AC adapter
You are here because the computer fails only when the AC adapter is used.
 If the power-on indicator does not turn on, check the power cord of the AC adapter for correct continuity and installation.
To check the AC adapter, follow the steps below:
1. Unplug the AC adapter cable from the computer.
2. Measure the output voltage at the plug of the AC adapter cable. See the
following figure:

Note: Output voltage for the AC adapter pin No. 2 may differ from the one you are servicing.

3. If the voltage is not correct, replace the AC adapter.
4. If the voltage is acceptable, do the following:
Replace the system board.
Note: Noise from the AC adapter does not always indicate a defect.

Checking operational charging
To check whether the battery charges properly during operation, use a discharged battery pack or a battery pack that has less than 50% of the total power remaining when installed in the computer. Perform operational charging. If the battery status indicator or icon does not light on, remove the battery pack and let it return to room temperature. Reinstall the battery pack. If the charge indicator or icon is still off, replace the battery pack.
If the charge indicator still does not light on, replace the system board. Then reinstall the battery pack. If it is still not charged, go to the next section.
Checking the battery pack
Battery charging does not start until the Power Meter shows that less than 95% of the total power remains; under this condition the battery pack can charge to 100% of its capacity. This protects the battery pack from being overcharged or from having a shortened life.
To check your battery, move your cursor to the Power Meter icon in the icon tray of the Windows taskbar and wait for a moment (but do not click it), and the percentage of battery power remaining is displayed. To get detailed information about the battery, double-click the Power Meter icon.
Note: If the battery pack becomes hot, it may not be able to be charged. Remove it from the computer and leave it at room temperature for a while. After it cools down, reinstall and recharge it.

Disassembling procedure 

Hard disk drive(HDD)
Loosen the screws 1 that secure the compartment cover. Remove the compartment cover 2.

Remove the frame fixing screws 3 .

Detach the hard disk drive connector shown by arrows 2 and 3 .

Take out the hard disk drive secured in a metal frame in the direction shown by arrow 4 .

Keyboard

Remove the screws 1.

Pull to unsnap the keyboard in the direction as shown by the arrows 2 , and then lift it up in the direction shown by arrow 3.

Pull the keyboard connector slot cover upward as shown by arrow 4, detach the keyboard cable from the keyboard connector in the direction shown by arrow 5.