Tuesday, 5 February 2019

HP ENVY 8 Note 5000 Tablet – Disassembling procedure


HP ENVY 8 Note 5000 Tablet – Disassembling procedure – How to remove the back cover – how to remove the battery – How to remove the frame
How to remove White back cover
Before removing the white back cover, follow these steps:
1. Turn off the tablet. If you are unsure whether the tablet is off, turn the tablet on, and then shut it down through the operating system.
2. Disconnect the power from the tablet by unplugging the power adapter cord from the tablet.
3. Disconnect all external devices from the tablet.
Remove the white back cover:
1. Place the tablet on a flat surface, display panel side down.
2. Insert a thin tool (2) at the bottom right edge of the white cover, and use the tool to release the cover from the clips and adhesive holding it to the tablet.
3. Lift the cover (3) away from the tablet.
How to remove Black back cover
Before removing the black back cover, follow these steps:
1. Turn off the tablet. If you are unsure whether the tablet is off turn the tablet on, and then shut it down through the operating system.
2. Disconnect the power from the tablet by unplugging the power adapter cord from the tablet.
3. Disconnect all external devices from the tablet.
4. Remove the white back cover
Remove the black back cover:
1. Place the tablet on a flat surface, display panel side down
2. Using a heat gun, gently heat a small portion the black back cover to loosen the adhesive. Keep the heat away from the camera.
3. Insert a thin tool (1) at the inside edge of the black cover.
4. Lift the cover (2) and peel to remove.
How to remove Middle frame
Before removing the middle frame, follow these steps
1. Turn off the tablet. If you are unsure whether the tablet is off  turn the tablet on, and then shut it down through the operating system.
2. Disconnect the power from the tablet by unplugging the power adapter cord from the tablet.
3. Disconnect all external devices from the tablet.
4. Remove the following components:
a. Micro SIM/microSD card tray
b. White back cover
c. Black back cover
Remove the middle frame:
1. Place the tablet on a flat surface, display panel side down.
2. Remove the 4 larger 4 mm P0 Phillips head screws from the middle frame.
3. Remove the remaining fourteen 2 mm P0 Phillips head screws that secure the middle frame to the tablet.
4. Insert a thin tool (1) where the display is connected to the frame, and then slide the tool around the frame to separate the frame from the display.
5. Remove the frame (2).
How to remove Side key buttons
Before removing the side key buttons, follow these steps:
1. Turn off the tablet. If you are unsure whether the tablet is off turn the tablet on, and then shut it down through the operating system.
2. Disconnect the power from the tablet by unplugging the power adapter cord from the tablet.
3. Disconnect all external devices from the tablet.
4. Remove the following components:
a. Micro SIM/microSD card tray
b. White back cover
c. Black back cover
d. Middle frame
Remove the side key buttons:
1. Place the tablet on a flat surface, display panel side down.
2. Push in on the side key buttons, and then remove the button tray up away from the tablet.
How to remove Battery
Before removing the battery, follow these steps:
1. Turn off  the tablet. If you are unsure whether the tablet is off turn the tablet on, and then shut it down through the operating system.
2. Disconnect the power from the tablet by unplugging the power adapter cord from the tablet.
3. Disconnect all external devices from the tablet.
4. Remove the following components:
a. Micro SIM/microSD card tray
b. White back cover
c. Black back cover
d. Middle frame
Remove the battery:
1. Lift the black plastic thermal pad (1) up and away from the battery.
2. Disconnect the battery cable (2) from the system board.
3. Grasp the pull-tab on one of the 3 strips of tape and then carefully and slowly pull straight away, parallel with the tablet, until the entire strip has been removed. After releasing the 3 stretch-release tapes, carefully remove the battery (3) from the tablet.

Sunday, 13 January 2019

HP Chromebook 14 – Disassembling procedure


Disassembling procedure – How to remove the key board – How to remove the Battery – How to detach the display unit - HP Chromebook 14
HP Chromebook 14: disassembling procedure 
How to remove Keyboard/top cover
Before removing the disassembling the computer, follow these steps:
1. Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
Remove the keyboard/top cover:
1. Close the computer.
2. Turn the computer upside down, with the front toward you.
3. Remove the thirteen Phillips PM2.5×6.5 screws that secure the keyboard/top cover to
the computer.
4. Lift the front end of the keyboard/top cover (1) and swing it up and back until the left and right edges detach from the base enclosure.
5. Lift the keyboard/top cover (2) until the back edge detaches from the base enclosure.
6. Slide the keyboard/top cover (3) forward until the keyboard and TouchPad ribbon cables
are accessible
7. Release the zero insertion force (ZIF) connector (1) to which the keyboard cable is attached, and then disconnect the keyboard cable (2) from the system board.
8. Release the ZIF connector (3) to which the TouchPad cable is attached, and then disconnect the TouchPad cable (4) from the system board.
How to remove Battery
Before removing the battery, follow these steps:
1. Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the keyboard/top cover
5. Remove the speakers
Remove the battery:
1. Disconnect the battery cable from the system board.
2. Remove the Phillips PM2.5×4.5 screw (1) that secures the battery to the base enclosure.
3. Lift the left side of the battery (2) until the battery is clear of the alignment post (3) in the middle of the battery.
4. Release the battery (4) by sliding it to the left.
5. Remove the battery (5) by sliding it forward.
How to remove Display assembly
Before removing the display assembly, follow these steps:
1. Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the keyboard/top cover
5. Disconnect the battery cable from the system board
Remove the display assembly:
1. Disconnect the display panel cable (1) from the system board.
2. Disconnect the WLAN antenna cables (2) from the terminals on the WLAN module.
3. Release the WLAN antenna cables from the routing channel (3) built into the base enclosure.
4. Disconnect the WWAN antenna cables (4) from the terminals on the WWAN module.
5. Release the WWAN antenna cables from the routing channel (5) built into the base enclosure.
6. Remove the two Phillips PM2.5×5.5 screws (1) that secure the display assembly to the
base enclosure.
7. Remove the display assembly (2).

Thursday, 10 January 2019

Apple iPhone speaker replacement procedure – Apple iPhone 6 Earpiece Speaker removal and replacement Apple iPhone 6


Disassembling procedure 
Power off your iPhone before beginning disassembly. Remove the two 3.6 mm Pentalobe screws next to the Lightning connector.
The next three steps demonstrate using the iSclack, a great tool for safely opening the iPhone 6 that we recommend for anyone doing more than one repair. If you aren't using the iSclack, skip to Step 5. If the plastic depth gauge is attached at the center of the iSclack, remove it now it's not needed for larger phones like the iPhone 6. Close the handle on the iSclack, opening the suction-cup jaws.
Place the bottom of your iPhone in between the suction cups. Position the iSclack's upper suction cup against the display, just above (but not covering) the home button.
Open the handles to close the jaws of the iSclack. Center the suction cups and press them firmly onto the top and bottom of the iPhone
Hold onto your iPhone securely and close the handle of the iSclack to separate the suction cups, pulling the front panel up from the rear case. The iSclack is designed to safely open your iPhone just enough to separate the pieces, but not enough to damage the display cables. Peel the two suction cups off your iPhone.
If you don't have an iSclack, use a single suction cup to lift the front panel: Press a suction cup onto the screen, just above the home button.
Be sure the cup is pressed securely onto the screen to get a tight seal.
While holding the iPhone down with one hand, pull up on the suction cup to slightly separate the front panel assembly from the rear case. Take your time and apply firm, constant force. The display assembly is a much tighter fit than most devices.
Using a plastic opening tool, begin to gently pry the rear case down, away from the display assembly, while continuing to pull up with the suction cup. There are several clips holding the front panel assembly to the rear case, so you may need to use a combination of the suction cup and plastic opening tool to free the front panel assembly.
Pull the plastic nub to release the vacuum seal on the suction cup. Remove the suction cup from the display assembly.
Pull the home button end of the front panel assembly away from the rear case, using the top of the phone as a hinge.
Keep the front panel supported at a 90ยบ angle in relation to the rear case until you remove it allowing it to fall flat will strain the display cables and their connections on the logic board
Several clips along the top edge of the front panel form a partial hinge, allowing the front panel assembly to swing open like a book. During reassembly, align the clips just below the top edge of the rear case. Then, slide the ront panel upward until its top edge is flush with that of the rear case.
Remove the following five Phillips screws securing the front panel assembly cable bracket:
Three 1.2 mm screws
 One 1.7 mm screw
One 3.1 mm screw
Remove the front panel assembly cable bracket from the logic board.
In the next four steps, take care to pry up only on the cable connectors, and not on their sockets on the logic board. Use the flat end of a spudger to disconnect the front-facing camera and sensor cable connector.
Use the flat end of a spudger to disconnect the home button cable connector.
Use the flat end of a spudger to disconnect the display data cable connector. When reassembling your phone, the display data cable may pop off its connector. This can result in white lines or a blank screen when powering your phone back on. If that happens, simply reconnect the cable and power cycle your phone. The best way to power cycle your phone is to disconnect and reconnect the battery connector.
Use the flat end of a spudger to disconnect the digitizer cable connector.
Remove the front panel assembly from the rear case.
Remove the following Phillips #00 screws from the earpiece speaker/front-facing camera bracket:
One 2.3 mm screw
One 3.0 mm screw
One 2.2 mm screw
Remove the earpiece speaker/front-facing camera bracket from the front panel.
Lift the front-facing camera out of its recess in the front panel.
Holding the front-facing camera out of the way, remove the earpiece speaker from the front panel. Be careful not to touch any of the contacts on the speaker or the cable, oils can damage them and interrupt the connection.

Saturday, 5 January 2019

How to replace the display of Sony Xperia Z - How to replace the display of Sony Xperia Z3


Sony Xperia display replacement procedure –Sony Xperia Z Display replacement procedure 
Warm the Battery cover before disassemble it.
Carefully' warm the battery and remove it. Be sure not to overheat the battery
Unscrew 4x screws and disconnect 3x flex cables in case to free the mother board.
Remove the mother board
Remove main Camera, front Camera and antenna wire Flex cable.
Remove The Headphone connector and the Ringer / Cover / Signal Antenna module.
Disconnect the LCD light flex cable by lifting up the black plastic and removing the flex
cable from the right side and we are ready to go.
Remove the touch panel . Warm the Touch screen before you start to disassemble it.
Sony Xperia Z3 Display replacement procedure 
Remove back cover. Slightly warm up the cover before removal
Then remove the back frame
Release LCD screen connector.
Remove the Digitizer and display after  Slightly warming up 
Heat up for 3 minutes, cut the sticker with much more effort and take the screen with earpiece on carefully
Remove the earpiece from screen. And need to put it back when place the new screen.

Monday, 31 December 2018

HP ENVY Sleekbook 6 – Disassembling procedure – How to remove the keyboard – How to remove the top cover – How to replace the battery


HP ENVY Sleekbook 6: disassembling procedure 
How to remove Base enclosure
Before disassembling the computer, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adaptor from the computer.
Remove the base enclosure:
1. Turn the computer face down, and then remove the 12 Phillips PM 7.5 millimeter long screws.
2. Remove the bottom enclosure.
How to remove Battery
Before removing the battery, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adaptor from the computer.
4. Remove the base enclosure 
Remove the battery:
1. Turn the computer right-side up, with the front toward you.
2. Disconnect the battery cable.
3. Move the battery cable to the side (1), and then remove the 6 Phillips PM 2.5×4.2 screws (2) that secure the battery to the computer.
4. Remove the battery from the computer (3).
How to remove Hard drive
Before removing the hard drive or SSD, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
4. Remove the base enclosure
5. Disconnect the battery cable
Remove the hard drive:
1. Disconnect the hard drive cable from the system board (1), and then remove the 4 screws (2) securing the hard drive to the top cover.
2. Remove the hard drive (3).
How to remove RTC battery
Before removing the RTC battery, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
4. Remove the base enclosure
5. Disconnect the battery cable 
Remove the RTC battery:
1. Use a thin, non-conductive tool to remove the RTC battery from the socket on the system board.
2. Hold down the media card reader board (2), and remove the RTC battery (3). (The RTC battery is also attached to the system board by foam material rather than double-sided adhesive.)
How to remove TouchPad module
Before removing the TouchPad button board, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
4. Remove the base enclosure
Remove the TouchPad button board and cable:
1. Turn the top cover upside down, with the back edge toward you.
2. Disconnect the cable (1) that secures the TouchPad cable to the system board.
3. Remove the 4 Phillips PM 2.5×3.0 black screws (2) that secure the TouchPad button board to the top cover.
4. Remove the 2 Phillips PM 2.5x3.0 silver screws, and then remove the TouchPad bracket (3).
5. Lift up on the rear edge, slide backwards, and then remove the TouchPad button board and cable (4).
How to remove rhe  Keyboard
Before removing the keyboard, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
4. Remove the base enclosure 
Remove the keyboard:
1. Turn the computer right-side up with the front facing you.
2. Remove the 16 Phillips PM 2x3 screws.
3. Remove the single screw (1), and then release the keyboard and keyboard bracket from the top cover (2).
4. Remove the 1 Phillips PM 2.5x3 screw securing the keyboard to the bracket (1), disconnect the keyboard cable (2) (pushing it through the bracket), and then remove the keyboard from the bracket (3)
How to remove Top cover
Before removing the top cover, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
4. Remove the base enclosure
5. Disconnect the battery cable
Remove the top cover:
1. Turn the computer right-side up, with the front toward you.
2. Open the computer.
3. Remove the 3 screws from each hinge on the top cover (1), and then remove the top cover (2).

Monday, 24 December 2018

Color TV circuit diagram for 14 inch, 21 inch and 20 inch - LC8635XXX, LV1116, LA72700


Used ICs: LC8635XXX, LV1116, LA72700, HCF4053BE,  AT28C08, AT24C08, LA76818A, LA7642, LA78040, CD5265 and transistorized SMPS.


Wednesday, 19 December 2018

How to replace the display of HTC Evo 4G - Mobile phone

HTC display replacement procedure – How to replace the display of  HTC Evo 4G
Gently insert an iPod opening tool between the rear panel and the inner rear frame near the headphone jack. Use your iPod opening tool to pry up the rear case around the perimeter of the Evo.
Lift the rear panel off of the inner rear frame.
Using the tip of your finger, lift the battery from the end closest to the camera. Remove the battery from the rear inner frame.
Use the flat end of a spudger to pry up the red MicroSD retainer attached o the inner frame. The retainer will move about 1 mm and stop. Do not attempt to completely remove the MicroSD card retainer.
Use a pair of tweezers to carefully pull the MicroSD card out of its slot in the inner rear frame.
Remove six T5 Torx screws securing the rear inner frame to the inner case.
Gently insert an iPod opening tool between the rear inner frame and its plastic surround near the Micro HDMI port. Carefully pry the top edge of the rear inner frame away from the front surround of the Evo.
Insert the iPod opening tool between the rear inner frame and its plastic surround and pry up at several points along the left edge of the Evo.
Continue the prying procedure, now focusing on detaching the plastic surround from the bottom of the Evo. Pry up the rear inner frame along the right edge using the method described in previous steps. Eventually work around the entire perimeter of the rear inner frame until it is lifted slightly from the inner case.
Remove the rear inner frame from the rest of the Evo.
Remove the single Phillips screw securing the logic board to the inner case near the headphone jack.
Use the flat end of a spudger to pry the logic board off the posts securing it to the metal display tray. Do not try to completely remove the logic board just yet. It is still attached by three ribbon cables.
Carefully peel the device information sticker off the left edge of the logic board and EMI shield to reveal three connectors covered with tape. It is not necessary to peel the entire device information sticker off the EMI shield.
Fold the device information sticker up against the top of the logic board to keep it out of the way while you work. Remove the pieces of tape covering the following ribbon cables:
Front-facing camera
Front panel ribbon cable
Display ribbon cable
Using the tip of an iPod opening tool, flip up the front-facing camera ribbon cable retaining flap. Be very careful and gentle with these flaps. They are very easy to break or dislodge and equally difficult to reinstall. Use a pair of tweezers to pull the front-facing camera ribbon cable straight out of its socket.
Using the tip of an iPod opening tool, flip up the front panel ribbon cable retaining flap. Use a pair of tweezers to pull the front panel ribbon cable straight out of its socket.
Using the tip of an iPod opening tool, flip up the display ribbon cable retaining flap. Grasp the display ribbon cable with a pair of tweezers and pull it straight out of its socket.
Carefully lift the logic board out of the inner case, minding any cables that may get caught. Be mindful of the top power button and side rocker switch, which may fall out of the front case when the board is removed. Gently lift the front-facing camera out of its recess in the inner case and remove it from the Evo.
In the following steps, you will use a heat gun to soften the adhesive securing the outer black border around the underside of the front glass panel to the inner case.
With the heat gun set to low, start by heating the outer black border near the upper left corner of the glass panel. Try not to excessively heat the outer plastic edge of the Evo. Due to the heat applied, it is normal for a layer of condensation to develop on the inside of the glass panel and/or the outside of the LCD. It can be removed with glass cleaner once the glass is separated from the display.
Gently insert an iPod opening tool between the glass front panel and its plastic surround near the upper top left corner of the Evo. Carefully pry up the glass, being careful not to bend it excessively. The key is to work slowly and gently to avoid breaking internal components.
Use a heat gun to soften the adhesive along the left side of the front glass panel.
Insert the iPod opening tool between the front panel and its plastic surround and pry up a several points along the left edge of the Evo.
Continue the heating and prying procedure, now focusing on detaching the bottom of the front panel from the plastic surround. Pry along the bottom edge of the Evo to further separate the front panel from the rest of the device.
Use a heat gun to soften the adhesive along the right side of the front glass panel.
Pry up the front panel along the right edge using the method described in previous steps. Eventually work around the entire perimeter of the front panel until it is lifted slightly from the inner case. Don't try to completely remove the front panel just yet. Its ribbon cable is still attached to the inner case.
Peel the front panel ribbon cable off the adhesive securing it to the metal underside of the inner case.
Lift the front panel out of the inner case, minding the cable still routed through the bottom of the Evo. Carefully de-route the front panel ribbon cable through the slot in the inner case. Remove the front panel. Notice the four (4) clear plastic hooks that are adhered behind the menu buttons. Look closely. Each one is shaped differently and in a particular orientation. If the replacement front panel does not have these installed already, carefully remove and transfer them from the old panel to the replacement.
Peel the piece of tape connecting the underside of the LCD metal tray to the bottom of the inner case.
In the following steps, you will use a heat gun to soften the adhesive securing the underside of the LCD panel to the inner case. The area the adhesive is applied to is shown in red in the second picture (with the LCD removed). Use your heat gun to soften the adhesive under the LCD panel along its left edge.
To gain enough clearance to insert an iPod opening tool, it is necessary to simultaneously push the LCD panel outwards while prying along the edges. It is recommended to push through the opening located near the bottom left corner of the Evo. Insert an iPod opening tool with the edge angled up toward the underside of the display between the backlight and the metal shield beneath it.
Gently insert an iPod opening tool between the LCD panel and its plastic surround near the top left corner of the Evo. Use the iPod opening tool as a lever to pry the LCD panel away from its plastic surround.
Use your heat gun to soften the adhesive under the LCD panel along its right edge.
To gain enough clearance to insert an iPod opening tool along the bottom of the LCD panel, it is necessary to simultaneously push the LCD panel outwards while prying along the edges. It is recommended to push through the opening near the bottom right corner of the Evo. Insert an iPod opening tool between the LCD panel and its plastic surround and pry up at several points along the right edge of the Evo.
Lift the LCD panel assembly out of the inner case.

LG 52LG50FD, 52LG50FD-SA-Service adjustments-service mode entry-white balance adjustment-ADC component 1 RGB adjustment and more

  These adjustments are similar to 42LB7DF Because this is not a hot chassis, it is not necessary to use an isolation transformer. However...