Wednesday, November 02, 2016

BlackBerry PlayBook – Disassembling procedure – 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 remove the Display 

BlackBerry PlayBook 

TECHNICAL SPECIFICATION 
7" Capacitive Touchscreen with Multitouch Support 1 GHz TI OMAP 4430 Dual Core Processor 1 GB RAM.
Dual HD Cameras (3MP and 5MP in the front and back, respectively),The PlayBook lacks support for mobile broadband.
DISASSEMBLING PROCEDURE 
Insert a plastic opening tool into the PlayBook's rim, and pray to the gods of electronics that the front panel doesn't shatter.
Upon releasing the clips surrounding the perimeter, the rear case can be removed.
Unlike other popular tablets, the PlayBook's guts are not housed within the back cover but are instead attached to the display assembly.
The PlayBook has a 20 watt-hour battery, which is a bit smaller than the iPad 2's 25 watt-hour and the Xoom's 24 watt-hour battery. Even though the battery in the
PlayBook has a smaller capacity, the battery life is rumored to be comparable to the iPad 2 and Xoom, although official numbers have not yet been released.
Now we can remove a pair of screws from the battery connector with a Phillips #00 screwdriver.
Next we pry off the battery connector to bring us one step closer to the goods.
Continue by prying off all the other connectors from the motherboard.
Next we remove a couple Phillips screws from the motherboard. In an array of light showering us from the BlackBerry heavens (not pictured), we remove the motherboard from the PlayBook.
Front view of the motherboard.
Elpida B8064B2PB-8D-F 1GB DRAM & the TI OMAP4430 1GHz dual-core processor.
SanDisk SDIN5C2-16G 16 GB NAND Flash.
Texas Instruments TWL6030 Power Management.
STMicroelectronics XTV0987 5 MP mobile imaging processor.
Wolfson WM8994E audio codec Texas Instruments WL1283 GPS/WLAN/Bluetooth/FM
TriQuint Semiconductor TQP6M9002 802.11a/b/g/n + BT front-end module.
And the rear view of the motherboard. 
Texas Instruments LMV339 Quad General Purpose Low-Voltage Comparators
Texas Instruments SN74AVCH4T245 4-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation and 3-State Outputs.
Bosch Sensortec BMA150 Digital 3- axis accelerometer Invensense MPU-3050 3 axis gyroscope.
Texas Instruments PS63020 High Efficiency Single Inductor Buck Boost Converter with 4A Switch.
Now turn attention back to the front panel assembly.
The right speaker is held in place by just two Phillips screws.
The speakers conveniently use pressure contacts to make an electrical connection to the motherboard.
Each speaker assembly houses two individual speakers, bringing the total speaker count to four.

The left speaker assembly lifts straight out of the steel mid-frame, while still connected to the battery.
The mid-frame is secured to the front panel assembly by a few screws.
Remove the mid-plane board, which houses the battery, left speaker, and antennas.
This design allows for quick-and-easy access to the front panel and LCD - the most commonly broken components on mobile devices.
The actual antennas in the PlayBook are built into the rear case and speaker modules, and are attached to the antenna cables via pressure contacts.
The camera assembly is easily removed from its recess.
The front camera, rear camera, and top control buttons are all attached as one assembly, making
the replacement of a broken power button or volume buttons very costly.
The headphone jack cable is held in place by a metal retainer.
The right microphone is also attached to this assembly.
Dual microphones presumably allow for noise cancelling to eliminate background noise.
We peel the left microphone off the front panel assembly.
Upon removing a rubber cover and dust grill, we can read: S233 7252
After removing a few retaining screws, the LCD can be lifted off the front panel assembly. This little 7" panel packs a 1024 x 600 resolution.
Upon closer inspection, we find that the frame around the front glass panel is made of magnesium, a strong yet light metal. Many devices are using magnesium for structural components due to its desirable qualities for mobile devices. The Cypress CY8CTMA3 Multi-Touch All-Point TrueTouch projected capacitive touchscreen controller is visible in the last picture. It is attached directly to the digitizer cable.

LG Mobile Phone - LG Xenon – 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 rear case
  • How to remove the mother board 
  • How to remove the LCD screen 

LG Xenon

Turn the phone over so the back side is facing you.
Placing your thumb on the bottom of the phone, apply pressure to the small ridge in the middle of the phone and push upward towards the camera.
The back casing should slide off.
Using your index finger, pull the top of the battery out first. Place your finger at the top center of the battery in the gap that is provided. Then pull the battery towards yourself.
The battery should easily fall out after the top of the battery has been pulled out.
Unscrew the six 2.4mm Phillips #00 screws (three on the left and three on the right of the phone) to remove the inner back case.
Once all six screws are removed, use the plastic opening tool to carefully pry apart the inner back case. Push the plastic tool underneath the case. Carefully push upward, with the tool, while moving it around the case.
Remove the camera, lock, and volume buttons from the side of the phone.
Carefully remove the two 3mm Phillips #00 screws (one on the top and one on the bottom) that are attaching the motherboard to the phone.
For this next step, carefully lift and remove the motherboard.
A connector cable will still be connected to the motherboard upon removing it.
Damage to the connector cable will permanently disable phone.
Carefully unclip the silver metallic tab from the motherboard.
Once the cable is removed, you have successfully disassembled the motherboard of your phone.
Turn the motherboard over and carefully remove the keypad from the motherboard.
The keyboard may be sitting loosely in the case (not attached to the motherboard). Carefully remove keyboard from case.
After removing the motherboard and keyboard, unscrew eight 1.6mm Phillips #00 screws in the middle of the phone.
Remove slider piece.
Pay close attention that you don’t lose the spring.
Carefully remove the spring.
Remove six 2.25mm Phillips #00 screws along the outside of the case.
Using the plastic opening tool, carefully open and remove the case. Slide the tool along the edge and pry upwards to open.
Remove the black electrical tape holding the LCD to the screen.
Un-clasp the small tab in the top right corner.
Unhook the LCD from tabs on the bottom using the plastic opening tool.
Remove the LCD. Be careful, the LCD screen is fragile.

Tuesday, November 01, 2016

Sony tablet - Sony Reader Touch Edition PRS-600 – Disassembling procedure - How to replace battery – How to replace the screen – Tablets repair and service

Category: Tablets Repair and Service 

Contents of this article 

  • How to remove the back cover
  • How to remove the battery 
  • How to remove the LCD screen  

Sony Reader Touch Edition PRS-600

DISASSEMBLING PROCEDURE 
Using the Phillips head screwdriver PH000, remove the two 1.4 mm screws that are located on the backside of the device.
Slide the back cover off by pushing it to the left, away from the side that held the screws. Remove the cover.
This is what the device should look like once the back cover panel has been removed.
Once the back cover has been removed locate the battery in the bottom right corner of the device.
Using the pointed end of the spudger, push out the white plug that is connected to the battery from its beige base.
Use the flat end of the spudger to pry the battery out of its holder.
There may be glue holding it in place.
Remove the stylus from the device.
Using the Phillips screwdriver remove the 1.4 mm screw from the top panel.
Using the same screwdriver, remove the 1.4 mm screw from the back of the device.
Pry apart off the top panel of the device.
Using a Phillips head screwdriver, remove the two 1.4 mm screws from the bottom panel of the device.
Using the same screwdriver, remove the 1.4 mm screw that is located on the back of the device.
Pull the panel away from the device. You may have to use the flat end of the spudger to remove the side portion of the panel because it will be glued in place.
Using a screwdriver remove the four 1.4 mm screws that are holding the black plastic casing in place.
Pry open the black casing to access the screw that is holding down the battery holder.
Remove the one 1.4 mm screw that is holding down the battery holder located under black casing.
Lift the black inner casing and the battery holder out of the device.
The battery holder and the black inner casing are connected by a thin strip of copper. There may be glue holding the black inner casing in place.
Using a Phillips head screwdriver, remove the one 1.4 mm screw holding in the motherboard.
Using the flat end of the spudger, flip up the 4 latches holding down the thin, orange strips that connect the motherboard to the screen, audio/AC adapter/micro USB ports, and SD card/PRODuo ports.
To disconnect the the screen, audio/AC adapter/micro USB ports, and SD card/PRODuo ports pull each orange slip away from their corresponding latch.
Lift the end of the motherboard closest to the memory cards and pull out.
Using a Phillips head screwdriver, remove the three 1.4 mm screws located on the SD/memory card holder.
Remove the SD/memory card holder from the device.
Using the Phillips head screwdriver, remove the two 1.4 mm screws in the screen at the bottom of the device that are usually covered by the power switch panel.
Using the same screwdriver, remove the 1.4 mm screw at the bottom of the device that is usually covered by the bottom and side panel.
Remove the four 1.4 mm screws that are located on the side of the device that are usually covered by the bottom and side panel.
Be sure to lift the thin, orange strip that is attached to the audio/AC/mini
USB ports out of the way, before removing the screen.
Lift the end of screen opposite the red edge and pull it out of the casing.