Tuesday, June 28, 2016

Lenovo G5080 – Laptop Disassembling procedure – How to test the battery pack – How to test the AC adapter voltage – How to remove and replace the Keyboard – How to remove the battery – how to remove the HDD and optical drive – Laptop repair and service

Category: Laptop Repair and Service 

Contents of this article 

  • How to check the battery 
  • How to check the AC adapter 
  • How to disassemble the Laptop 

Lenovo G5080

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.
To check the battery pack, follow the steps below:
1. Turn off the computer.
2. Remove the battery pack and measure the voltage between battery terminals
1 (+) and 7 (-). See the following figure:
3. If the voltage is less than +11.0 V DC, the battery pack has been discharged.
Note: Recharging will be continued for at least 3 hours, even though the indicator does not light on.
If the voltage is still less than +11.0 V DC after recharging, replace the battery.
4. If the voltage is more than +11.0 V DC, measure the resistance between battery terminals 5 and 7. The resistance must be 4 to 30 K
W
. If the resistance is not correct, replace the battery pack. If the resistance is correct, replace the system board.

Monday, June 27, 2016

Kurio Xtreme – How to replace the power button – Tablets repair and service

Category: Tablets Repair and Service 

Contents of this article 

  • How to remove the case 
  • How to Remove the mother board 
  • How to replace the power button 

Kurio Xtreme Tablet 

Remove the rubber case by beginning to peel from one of the top corners and continue peeling until the cover is completely removed.
Unscrew the four 4 mm black screws using a Phillips #000 screw driver.
There are two screws on each side of the device (four total).
Insert the plastic opening tool in between the edges of the blue front casing and black back casing.
Slide the plastic opening tool around the perimeter of the device. This may require that you repeatedly run the opening tool up and down the edges of the device.
Be sure not to break any of the plastic clamps along the edges of the device when removing the back cover.
Carefully lift the back panel off of the rest of the device
Remove the three 4 mm screws on the motherboard with a Phillips #000 screwdriver.
Remove the orange data display ribbon wire above the battery by prying open the ZIF connector with the plastic opening tool.
Remove the orange data display ribbon wire to the left of the battery by prying open the ZIF connector with the plastic opening tool.
Remove the speakers out of the plastic molds by lifting up the black and red wires. Be careful not to disconnect the black and red wires from the motherboard.
Remove the motherboard by lifting it out of the casing. Set it upside down below the casing.
The motherboard will still be connected to the battery and the speakers.
Remove the volume buttons and/or power button by soldering them at their bases.
Volume down
Volume up
Power

Lenovo - M491 – Disassembling procedure – How to test the battery pack - How to test the charger – How to remove the bottom case – Laptop repair and service

Category: Laptop Repair and Service 

Contents of this article 

  • How to remove the battery 
  • How to test the battery pack
  • How to test the AC adapter 

Lenovo M491

Power system checkout
To verify a power symptom, do the following:
1. Turn off the computer.
2. Remove the battery pack.
3. Connect the ac power adapter.
4. Check that power is supplied when you turn on the computer.
5. Turn off the computer.
6. Disconnect the ac power adapter and install the charged battery pack.
7. Check that the battery pack supplies power when you turn on the computer.
If you suspect a power problem, refer to the following topics for a checkout:
“Checking the ac power adapter”
“Checking operational charging”
“Checking the battery pack”
Checking the ac power adapter
If the computer fails only when the ac power adapter is used, refer to the information in this topic to check the ac power adapter.
If the power-on indicator does not turn on, check the power cord of the ac power adapter for correct continuity and installation.
To check the ac power adapter, do the following:
1. Unplug the ac power adapter cable from the computer.
2. Measure the output voltage across the plug of the ac power adapter cable. The correct voltages are shown in the following table
Note: The output voltage across pin 2 might differ from the voltage that you measure.
3. Depending on the voltage that you measure, do one of the following:
If the voltage is not correct, replace the ac power adapter
If the voltage is acceptable, do the following:
a. Replace the system board.
Note: Noise from the ac power adapter does not always indicate a defect.
Checking operational charging To check whether the battery pack charges properly during operation, do the following:
Note: Before you begin, install a discharged battery pack or a battery pack that has less than 50% of the total power remaining in the computer.
1. If the battery status indicator does not turn on, remove the battery pack and let it return to room temperature.
2. Reinstall the battery pack.
3. If the indicator still does not turn on, replace the battery pack.
Checking the battery pack
To check detailed battery status information on the operating systems, do the following:
7: Launch the Power Manager program and click the Battery tab.
8: Do one of the following:
Click Start > Solution Center > System > Battery.
Launch the Settings program from the Start screen, and then click Power.
To check the battery pack, do the following:
1. Turn off the computer and disconnect the ac power adapter.
2. Remove the battery pack and measure the voltage between battery terminals 1 (+) and 7 (-). The correct voltages are shown in the following table.
3. Measure the resistance between battery terminals 5 and 7. The resistance should be 4 to 30 KΩ. If the resistance is not correct, replace the battery pack.
4. Depending on the voltage that you measure, do one of the following:
If the voltage is less than +12.0 V dc, recharge the battery pack. If the voltage still is less than +12.0 V dc after recharging, replace the battery pack.
If the voltage is more than +12.0 V dc, discharge the battery pack until the voltage becomes less than +12.0 V dc and then recharge the battery pack. If the voltage still is less than +12.0 V dc after recharging, replace the battery pack.
Note: Recharging will take at least three hours, even if the battery status indicator does not turn on.
5. Replace the system board if the new battery pack is not charged.
DISASSEMBLING PROCEDURE 
How to remove Battery pack
Unlock the battery lock 1. Hold the battery latch in the unlocked position, and then remove the battery pack 2.
How to remove Bottom slot cover
Remove the screws 1, and then remove the bottom slot cover 2.
How to remove Base cover
Remove the screws 1 and 2.
Remove the base cover.

Sony 3D DLP projector – Sony VPL-HW30ES - HW30AES – How to replace the projector lamp – How to remove and clean the airlifter - How to rest the lamp hour – Projector repair and service

Sony VPL-HW30ES - HW30AES 

How to replace the Lamp
1. Turn off the projector and unplug the AC power cord.
2. When setting the projector on a flat surface such as a desk etc., put a cloth to prevent the surface from being scratched. Reverse the projector as illustrated, then place it on the cloth.
3. Loosen the screw on the lamp cover with a Philips screwdriver, and then open the lamp cover.
4. Loosen the 3 screws on the lamp with the Phillips screwdriver. Hold up the handle, then pull the lamp straight out.
5. Hold the handle of the new lamp and push it in securely until it reaches the end, and then tighten the 3 screws.
6. Close the lamp cover, then tighten the screws.
Air Filter Cleaning 
1. Remove the filter holder.
2. Remove the air filter.
3. Attach the new air filter so that it fits into the each claws (10 positions) on the filter holder.
Attach the air filter aligning it with the shape of the filter holder. Also, do not touch the fan after removing the air filter that is set deep inside the projector.
4. Attach the filter holder.
The projector will not turn on unless the filter holder is securely closed.
5. Wipe dust off the ventilation holes (intake) with a soft cloth.
6. Place the project back on its original position.
7. Turn on the projector, then select the desired setting item on the Setup menu. The menu screen will  appeared.
8. Select “Yes”.
Do not put your hands into the lamp replacement slot, and do not allow any liquid or other objects into the slot to avoid electrical shock or fire.

Sunday, June 26, 2016

Nexus 7 – How to replace the Microphone – Mobiles and smartphones repair and service

Category: Tablets Repair and Service

Contents of this article

  • How to remove the case 
  • How to remove the battery 
  • How to replace the microphone

Nexus 7 Tablet

Gently insert a plastic opening tool near the top of the Nexus 7 between the rear panel and the front panel assembly.
Carefully run the plastic opening tool along the top edge to pry the rear panel away from the front panel assembly of the Nexus 7.
Insert the plastic opening tool between the rear panel and the front panel assembly near the power button and pry up at several points along the right edge of the Nexus 7.

Pry up the rear panel along the left edge using the method described in previous steps.
Gently lift and remove the rear panel up off the front panel assembly.
Using the tip of a spudger, push first on one side then the other to "walk" the battery cable straight out of its socket on the motherboard.
Peel back the copper ESD shielding covering the bottom of the motherboard.
Do not try to remove the copper shielding, as it is still attached underneath the battery.
If you're just replacing the micro usb charge port, there is no need to peel back the copper heatsink like in the photo, the speaker assembly can simply be moved out of the way once unscrewed. If the speakers are to be replaced simply peel back the bottom corner to expose the speaker connection. Leave the rest of the heatsink shield alone.
Using the tip of a spudger, push the speaker cable straight out of its socket on the motherboard.
Peel back the label covering the power and volume button ZIF connector.
Use the tip of a spudger to carefully flip up the retaining flap on the power and volume button ribbon cable ZIF socket.
Make sure you are flipping up the retaining flap, not the socket itself.
Use the tip of a spudger to pull the power and volume button ribbon cable straight out of its socket.
Carefully peel back the adhesive tape covering the I/O board ribbon cable socket on the motherboard.
Use the tip of a spudger to carefully flip up the retaining flap on the I/O data ribbon cable ZIF socket.
Make sure you are flipping up the retaining flap, not the socket itself.
Use the tip of a spudger to pull the I/O data ribbon cable straight out of its socket.
Peel back the adhesive tape covering the display and digitizer cable sockets.
It is not necessary to completely remove the adhesive, but it is helpful to fold it back on itself to get it out of the way.
Use the flat end of a spudger to pry the display data cable straight up off its socket on the motherboard.
Use the flat end of a spudger to carefully flip up the retaining flaps on the digitizer ribbon cable ZIF sockets.
Make sure you are flipping up the retaining flaps, not the sockets themselves.
Use the tip of a spudger to pull the digitizer ribbon cable straight out of its socket.
Use the tip of a spudger to remove the warranty seal stickers.
Remove the following screws securing the motherboard to the metal frame:
Six 3.25 mm silver Phillips screws
One 2.23 mm black Phillips screw
Carefully lift the motherboard assembly out of the Nexus 7, minding any cables that may get caught.
Gently pull the upper microphone straight up off its socket located on the back of the motherboard.

HTC Desire 510 – Disassembling procedure – How to remove the case – How to remove the earpiece – Mobiles and smartphones repair and service

Category: Mobiles and Smartphones Repair and Service 

Contents of this article 

  • How to remove the case
  • How to remove the mother board 
  • How to replace the Earpiece 

HTC Desire 510 

DISASSEMBLING PROCEDURE 
Switch off the phone, remove the battery and any installed SIM and memory cards. Remove 7x Torx T5 screws.
Use a plastic tool to remove the rear bezel. The loudspeaker is on the inner side of the rear bezel.
Disconnect the touch screen flex cable. Disconnect the light sensor flex cable. Unstuck the vibra-motor from the middle frame. Remove the coaxial antenna cable from the middle frame. The LCD display flex cable is connected to the bottom side of the board.
At the upper left side, the board is held by a plastic locking clip. Use a plastic tool and start the separating from here. Gently disconnect the LCD display flex cable. Now remove the logic board.
Front and Main Cameras
Main / Rear camera.
EARPIECE
The earpiece is in the upper part of the middle panel.


Toshiba Satellite Laptop – E205 - Disassembling - How to remove the keyboard How to replace the Optical drive – Laptop repair and service

Category: Laptop Repair and Service 

Contents of this article 

  • How to remove the keyboard 
  • How to remove the case 
  • How to remove the CD Drive 

Toshiba Satellite E205

OPTICAL DRIVE REPLACEMENT PROCEDURE 
With the battery away from you, slide the locking clips out.
The left clip stays, the right clip is spring loaded. Slide the battery away from you.
Use a spudger to carefully pry up the keyboard screw cover.
Remove the two screws securing the keyboard to the chassis.
Carefully tilt the keyboard towards you and release the ribbon cables.
Use a spudger if needed to release the latch. The latch slides out. The keyboard is now free and can be set aside.
Remove the five black screws
Remove the one silver screw
Flip the laptop over so the bottom is facing up.
Using a spudger, remove the seven rubber inserts.
The feet only go in one location on the bottom of the laptop, so save yourself some time and track where they go.
Remove the six silver screws.
Remove the one black screw.
Stand the laptop up on end.
Remove the two rubber inserts from the back of the laptop. One insert is on each side of the laptop.
Remove the two screews.
Carefully work a spudger in the crack at the back of the laptop and separate the small rubberized section from the bottom of the laptop.
Remove the four screws.
Disconnect the black wireless antenna lead.
The bottom of the laptop is now ready to lift off.
Carefully work a spudger around the seam of the laptop separating the bottom from the rest of the laptop.
There is a data connection at the front of the laptop that needs to be disconnected.
Use a spuder to carefully disconnect the wire from the motherboard. Once this is free the bottom will come off.
Locate optical drive
Remove the three screws securing the optical drive.
Slide the optical drive away from the motherboard, and carefully lift up.