Sunday, November 13, 2016

HTC Wildfire S – Disassembling procedure – How to replace the LCD Display – Mobiles and Smartphones Repair and Service

Category: Mobiles and Smartphones Repair and Service 

Contents of this article 

  • How to remove the back cover
  • How to remove the mother board 
  • How to replace the LCD display 

HTC Wildfire S

First remove the rear case/battery cover
Remove the battery.
Remove the two T5 Torx screws.
Prise off the lower casing towards the right in the picture, taking care not to break the two tabs
Remove the two further T5 torx screws
Remove the three Phillips #00 screws.
Now carefully prise off the case all round and it will detach completely
Prise up this connector
And this one
Lift up the retainer using a plastic opening tool.
And carefully pull out the tab connector.
NOW PAUSE WITHOUT MOVING ANYTHING.
NOTE THIS FLEXIBLE RIBBON
Carefully lift up the board from the left-hand side allowing it to 'hinge' on the metallic ribbon connector you have just noted and allow it to lay flat
The freed connector for the screen should have unfolded
Now the screen can be pried from the outer case, but take care as you do so not to tear the metallic ribbon between the two casings
To detach the screen it can help to use a pry tool to push the screen from behind through the slot
The screen is detached and the connector can be wiggled out through the slot
Remove the old screen and connector altogether
The connector for the new screen now has to be wiggled back through the slot
Once the connecter is pushed through the slot, you should now stick the new screen into place using suitable adhesive strip.
Fold down the ribbon connector from the screen and carefully fold the two casing halves together again, making sure that the two connectors are sticking out of the side.
Reconnect the two connectors on the right hand side by pressing down
Reinsert the ribbon connector on the left hand side and push down the retaining catch.
Clip the rear casing back on to the body
Put the bottom cover back in place and then replace all the screws

Saturday, November 12, 2016

Lenovo YOGA 710-14ISK - YOGA 710-15ISK – How to check the ace adapter – Disassembling procedure – How to replace the battery - Laptop repaired and service

Lenovo YOGA 710-14ISK - YOGA 710-15ISK

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.
If the computer does not charge during operation, go to “Checking operational charging”.
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 fgure:
Note: Output voltage for the AC adapter pin No. 5 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 is not lit, 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 is still not lit, replace the system board.
Restore of factory default
The Lenovo YOGA 710-14ISK/Lenovo YOGA 710-15ISK/Lenovo YOGA 710-14IKB/ Lenovo YOGA 710-15IKB computer comes with pre-installed OneKey Recovery System.In order to save application fles and the initial backed up fles of the system, the hard disk in a Lenovo computer includes a hidden partition when it is shipped.
If you need to restore the system to the point of your frst boot up, just enter Lenovo OneKey Recovery System and run System Recovery. For details of OneKey Recovery System, see the User Guide for Lenovo OneKey Recovery system.
DISASSEMBLING PROCEDURE 
Base cover
Remove the screws 1 and 2
Insert a prying tool (Disassembling blade) between the base cover and C cover and slide it in the direction shown by arrows 3 to separate the base cover from C cover.
Remove the base cover 4.
Battery pack
Unplug the battery connector 1 and remove the screws 2. Then remove the battery pack 3.
Solid state disk
Remove the screw 1
Remove the solid state disk in the direction shown by arrow 2.

Friday, November 11, 2016

ZTE mobiles - ZTE Axon – Disassembling procedure – 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 NFC sensor
  • How to remove the mother board

ZTE mobiles ZTE Axon

DISASSEMBLING PROCEDURE 
The back covers and screw locations.
Remove the screws securing the back housing assembly.
Open the back housing assembly.
Remove the back housing assembly.
Remove the fingerprint sensor and flash sub-board.
Remove the NFC sensor.
Remove the speaker box.
Free the front camera and disconnect the connectors.
Free the RF cable and remove the screws securing the mainboard.
Remove the mainboard. The CPU, RAM and ROM of AXON.
Remove the earpiece speaker, back camera and vibrator unit.
Remove the battery.
The heat pipe radiator. Remove the sub-board.

HTC One X – Disassembling procedure – How to replace the mother board – 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 antenna
  • How to Replace the mother board 

HTC One X 

DISASSEMBLING PROCEDURE 
Insert a safety pin, or other small  object in the small opening next to the Sim card slot to remove the SIM card.
The Sim Card Slot is located at the top of the rear panel.
Using a plastic opening tool, carefully separate the display screen from the rear panel.
The display assembly is a tight fit therefore the removal must be carried out carefully with firm, constant force being applied around the bottom corners and sides of the panel. Note that the top of the phone is underneath the panel, and will not come out.
If  your display is cracked, take extra caution when separating the display from the rear panel to prevent further breakage.
Set aside the rear panel.
Remove the five screws at the top of the panel using a Phillips head screwdriver.
Two 2.05mm Philips head screws
Three 2.44mm Philips head screws
Also remove the screws with the warranty stickers.
Once the screws are removed, gently remove the plastic cover using a plastic opening tool to  detach the edges from the front panel.
Once you have disassembled your device, your warranty will no longer be valid
Remove the two screws at the bottom right corner of the front panel using a Phillips head  screwdriver, as shown in the image.
Two 3.35mm Philips head screws
Use tweezers to disconnect the antenna from the logic board to the PCB board.
Remove the tape connected to the motherboard.
Remove the tape holding the battery in place.
Gently lift the battery from the bottom using a plastic opening tool.
You may have to apply heat to melt the glue holding the battery in place.
Do not completely remove the battery yet
You can now disconnect the flex cable holding the PCB board place. Gently open the gates using tweezers or a plastic opening tool and use tweezers to slide the flex cable out.
Now that it's separated, remove and set aside the PCB board.
Place the battery back into its original position once the PCB board has been removed
Use tweezers to disconnect the power button flex cables.
Disconnect the volume flex cable by opening the gate and then sliding the cable out using tweezers.

Disconnect the touchscreen flex cable
Disconnect the remaining two flex cables in a similar manner before completely removing the logic board.
You may now remove the board safely

Thursday, November 10, 2016

Bose SoundTouch 20 – Disassembling procedure – How to replace the spacers – How to remove the amplifier – Audio system repair and service

Category: Audio System Repair and Servcie 

Contents of this article 

  • How to remove the case
  • How to replace the speakers 
  • How to remove the Amplifier 

Bose SoundTouch 20 

Bottom Cover Removal
Remove the 6 screws indicated
Lift off the bottom cover.
I/O PCB RemovalRemove the FFC from connector J606.
Remove the four screws securing the I/O PCB.
Lift up the I/O PCB and disconnect the cable harness from J610. Figure 
Disconnect the FFC from J607.
Press on J605’s two connector release tabs and carefully pull out the FFC.
Side Panel RemovalGrasp the side panel and slide it upward to remove the side panel from the enclosure.
Grille and Top Cover Removal
Remove the two screws securing the grille assembly to the bottom of the matrix.
Remove the two screws, on either side, securing the grille assembly to the side of the matrix.
With the unit on its back, lift up on the lower part of the grille and rotate it backward until grille and top cover are disengaged.
Remove the FFC from the button and display PCB.
Important Note: Take ESD precautions when disconnecting the OLED display.
Button PCB Removal
Remove the four screws securing the button PCB to the top cap. Slightly lift up the foam to expose to the two screws furthest from the grille.
Remove the six screws securing the display assembly to the grille. Lift out the display assembly.
Important Note: Take ESD precautions when connecting or disconnecting the OLED display.
Important Note: The display assembly must be replaced with the display assembly listed in the main part list. There are different OLEDs that need to match the display PCB. The display assembly listed in the main part list uses a matched OLED and display PCB.
Wi-Fi Module RemovalRemove the FFC from J902 and J802.
Remove the two screws securing the WiFi Module to the matrix and lift out the Wi-Fi Module.
Remove the FFC from J901. Press on J801’s two connector release tabs and carefully pull out the FFC.
Baffle and Driver Removal
Remove the 16 screws securing the baffle to the matrix.
The baffle gasket might cause it to stick to the matrix. Using a flat tool, slightly pry up on the top edges. Lift up the top edge of the baffle.
Note: If the baffle gasket peels away from the baffle, a new baffle with gasket should be used to prevent air leaks.
Disconnect the amp/power supply harness J200. Disconnect the driver harness connectors J302 and J303.
Remove the drivers from the enclosure. Lift out the baffle with amp/power supply PCB connected.
Amp/Power Supply PCB RemovalRemove the four screws securing the amp/ power supply shield.
Remove the two screws securing the amp/ power supply to the baffle. Lift out the amp/ power supply PCB.