Sunday, July 31, 2016

Epson Multimedia Projector – EB-X14 – EB-S12B - EB-W12 – EB-X11 – How to replace the lamp – How to replace the air filter – Projector repair and service

Epson – EB-X14 – EB-S12B -  EB-W12 – EB-X11

Replacing the Lamp
Lamp replacement period
It is time to replace the lamp when:
The following message is displayed.
"Time to replace the lamp.”
How to replace the lamp
The lamp can be replaced even when the projector is suspended from a ceiling.
1.After you turn off the projector's power and the confirmation buzzer beeps twice, disconnect the power cable.
2.Wait until the lamp has sufficiently cooled down, and then remove the lamp cover at the top of the projector.
Loosen the Lamp cover fixing screw with the screwdriver supplied with the new lamp unit or a Phillips screwdriver. Then slide the lamp cover straight forward and lift it to remove.
3. Loosen the two lamp fixing screws.
4. Take out the old Lamp by pulling the handle
5. Install the new lamp.
Insert the new Lamp along the guide rail in the correct direction so that it fits in place, push in firmly, and once it is fully inserted tighten the two screws.
6. Replace the lamp cover.
Resetting the lamp hours
The projector records how long the lamp is turned on and a message and indicator notify you when it is time to replace the lamp. After replacing the lamp, make sure you reset the Lamp Hours from the Reset menu.
Replacing the Air Filter
Air filter replacement period
If the message is displayed frequently even though the air filter has been
cleaned, replace the air filter.
How to replace the air filter
The air filter can be replaced even when the projector is suspended from a ceiling.
1. After you turn off the projector's power and the confirmation buzzer beeps twice, disconnect the power cable.
2. Open the air filter cover
3. Remove the air filter.
Grip the air filter cover tab and pull it straight out.
4. Install the new air filter.
Slide the air filter from the outside and press in until it firmly clicks into place.
5. Close the air filter cover.

Troubleshooting Netflix Errors Samsung Televisions – Tech tips - Colored Vertical lines - Thin vertical line and bar - LED LCD TV repair and service

Category: LED LCD Television Repair and Service

Contents of this article 

  • Netfix troubleshooting 
  • Double image 
  • Colored vertical line and bars 

Samsung Televisions Netfix

TROUBLESHOOTING NETFIX ERRORS 
The Netflix application within Samsung’s Smart Hub platform requires a good network connection for video and movie streaming. If problem with the Netflix app, here’s some check points to help isolate the issue.
First it’s important to check the network’s physical environment. For example, make sure the router is within 52 feet of the TV. There could be other environmental or network issues, but this is a good first check.
After confirming the router’s position, perform a Network Test. To perform a Network Test, follow these steps:
1. In the TV’s menu, open Network.
2. Select Network Status.
3. Choose Wireless.
4. Select the access point. The TV will attempt to connect to the Network.
If the Network test fails, follow these steps:
1. Power-cycle the TV.
2. Disconnect all the network devices.
3. Plug in and then power on the modem. Wait about 2 minutes.
4. Plug in and then power on the wireless router. Wait 2 minutes.
5. Plug in and then power on the TV. Run the network test again.
If the Network Test is successful, but Netflix is still not working, you will have to set the DNS server settings manually. To set the DNS server settings manually, follow these steps:
1. Select IP Settings.
2. Select obtain info manually, and then choose enter manually.
3. Enter all network information, and then enter 8.8.8.8 in the DNS feld.
4. When done, try to launch Netflix again.
Finally, if Netflix still will not open or there is a connection error, check the ESN number. To check the
ESN number, follow these steps:
1. Open the Netflix application.
2. Press the arrow keys on the remote in this order: Up, Up, Down, Down, Lef, Right, Lef, Right, Up, Up, Up, Up. A pop up screen appears.
3. Check the ESN number. If the number is missing, replace the Main Board.
4. Afer replacing the board, try to launch Netflix again.
TECH TIPS 
Model: LN55C650
Symptom: Colored Vertical lines
Cure: Bring up the “Picture Test”. If the lines appear in the Picture Test, the cause is a bad panel. You’ll need to replace the panel. If the lines do not appear, disconnect all signal sources and check again. If the lines are still in the Picture Test, change the main board. If the lines are gone, then a signal source is causing the problem.
Model: UN46C6500
Symptom: There’s a thin vertical line and bar in the test menu
Cure: Bring up the “Picture Test”. If the bar and line appear in the Picture Test, the cause is a bad panel. You’ll need to replace the panel. If the bar and line does not appear, disconnect all signal sources and check again. If the bar and line are still in the Picture Test, change the main board. If the bar and line are gone, then a signal source is causing the problem.

Saturday, July 30, 2016

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

Category: Mobiles and Smartphones Repair and Service 

Contents of this article 

  • How to remove the case 
  • How to Disconnect battery
  • How to remove the battery 

Nexus 7 Smart phone

BATTERY REPLACEMENT PROCEDURE 
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.
Wedge the flat end of a spudger in between the battery and the front panel assembly.
Run the flat end of a spudger along the top edge of the battery to separate it from the adhesive securing it to the front panel assembly.
Do not excessively bend the battery connector board. Be especially careful when prying up around the top left edge of the battery.
Wedge the flat end of a spudger between the bottom right corner of the battery and the front panel assembly.
Carefully run the spudger along the bottom edge of the battery while slowly lifting the battery to completely separate it from the adhesive securing it to the front panel assembly.
Grasp the lower right corner of the battery and rotate it upwards to remove it from the front panel assembly.
If you encounter any resistance from the remaining adhesive, simply use the flat end of a spudger to remove the excess adhesive.

Sunday, July 17, 2016

How to replace the speakers - Samsung Galaxy Tab 10.1 4G – Tablets repair and service

Category: Tablets Repair and Service 

Contents of this article 

  • How to remove the case 
  • How to disconnect the battery 
  • How to remove the speakers 

Samsung Galaxy Tab 10.1 4G

Power off your tablet before you begin disassembly. Screen side facing you, rotate device 180 degrees.
Using the plastic opening tool, start in the center near the charge port and wedge the angled tip between the plastic back and the glass screen.
Create a wedge and apply pressure. Use the tool to separate the screen from the back until you hear an audible “pop."
Continue to wedge the tool about every inch along the current edge.
Once the bottom edge has been loosened, work towards a bottom corner from the other edge and continue to wedge gently until you can “pop” the corner out.
Continue this process on the other bottom corner until it can be popped out as well.
Place your hand between the device and the back panel. Then continue the wedging motion along the top edge of the device until the back panel comes loose.
Do not wedge the tool directly on top of the power buttons and headphone jack. Wedge nearby so that you don’t damage internal hardware.
Remove the back from the device. Excessive force shouldn't be necessary here. If the back panel is sticking, find the area of the edge closest to the sticking point and wedge the opening tool there until the back panel pops free.
When working with electronics, it's important to choose a tool that's ESD-safe to avoid accidental damage to the device. The regular black nylon spudger or a plastic opening tool should be used whenever possible.
The connection between the battery and motherboard is a group of four wires in black housing that can be found near the top middle of the device. Using a plastic spudger or a flat, slim tool, lift the black connector housing upwards to disconnect it.
Use a Phillips #00 screwdriver to remove all 4 black 2.5mm screws securing the silver SIM card reader to the motherboard.
Using a plastic spudger, gently pop the SIM card reader connection off the motherboard.
There are 5 connection points all in a row. The one you want to pull off is the one furthest to the left.
Lift up SIM card reader and remove it.
You should be able to just pick it up with your fingers. If the piece is hard to grasp, slide the metal spudger tool under the reader to lift it.
Lift the SIM card reader off the motherboard, and replace it with a new SIM card reader.
Be sure to retrieve your SIM card from the old reader.
Remove the small piece of tape covering the ribbon connector.
You don't need to save this piece of tape.
When reassembling your device, simply replace this tape with a piece of scotch tape.
Carefully slide a plastic spudger under the black strip of plastic on the far side of the ribbon connector housing.
When working with electronics, it's important to choose a tool that's ESD-safe to avoid accidental damage to the device. The regular black nylon spudger or a plastic opening tool should be used whenever possible.
Lift the black strip upwards. This will release the ribbon.
Slide the ribbon out of the connector.
Repeat this step to release the other two ribbons.
You will need to remove the tape from covering those connectors, too.
Use the Phillips #00 screwdriver to unscrew the 10 3mm screws holding the battery in place.
Lift the battery out of its housing to remove it.
Use the metal spudger to disconnect every housing highlighted. There are 14 total disconnections. There are 5 connections inside this box.
You've already taken care of several of these in previous steps, so check which ones you've already completed then proceed with the rest.
Lift the motherboard up and away from the device.
The motherboard will be easy to remove as long as all cables are disconnected. If you are having issues removing the motherboard, make sure there are no lingering connections.
Using the metal spudger, pry the left speaker off of the device frame.
The speaker is adhered to the device frame. You will encounter resistance, so don't be alarmed if you struggle to remove the speaker.
When you're removing the left speaker, note how the speaker piece fits into the device frame. When rebuilding, you need to slide the speaker under the black extrusion.
Also remember to keep the connectors above the speaker so that they can connect to the motherboard.
Using the metal spudger, pry the right speaker off of the device frame in the same way. The speaker is adhered to the device frame. You will encounter resistance, so don't be alarmed if you struggle to remove the speaker.

Friday, July 15, 2016

Samsung washing machine - WF331ANW - WF331ANR– Service mode – EEPROM check – Error codes causes and solution – Home appliances repair and solutions

Category: Home Appliances Repair and Service 

Contents of this article 

  • How to access service mode 
  • Quick test mode 
  • Error code cause and solution 

Samsung WF331ANW - WF331ANR

Quick Test Mode:
To enter press Soil, Signal, & Power simultaneously with the power off.
1. All LED’s light up and the washer beeps as it enters the Quick Test Mode.
2. The unit displays the software version.
3. After the displaying the software version, turn Jog dial CCW until version disappears.
Press Spin to test Door Lock/Unlock circuit.
Press Temp Key (with door locked) to cycle through the Water Valves circuit test in this order: Pre, Bleach, Cold Main, Hot, Steam then off.
Press Soil Key to test the Heater
Press Signal Key to test the Pump
Spin Only option:
Power on, Press and hold Spin until display changes.
Press Spin to select spin time.
Press Start/Pause to start cycle, Normal Cycle 10/12 minutes, Heavy Duty Cycle 11/13 minutes, Delicate Cycle 8 minute. Spin speed varies with cycle.
EEPROM Clear Check
Power off, Press Delay Start, Signal and Power Key at the same time. Good = Good Fail = FAIL All memory will be cleared, including Fault Codes This should be done when a new Main PCB is installed
Fabric Softener Dispenser Test:
Start Rinse and Spin Cycle. After fill is completed remove detergent drawer, place towel below opening and within 3 minutes the dispenser will activate
Service Mode:
This mode allows more detailed operation tests and troubleshooting, to enter press Signal & Delay Start simultaneously with the power on.
While in Service Mode (the Service Mode can be entered while the unit is in a wash cycle) the following tests can be performed:
Quick Spin Test = Delay Start & Pre Wash: This accelerates the drum motor from 0 to maximum RPM over a few minutes.
 Press the Start/Pause button during the test to hold its spinning speed up to 10 min. before going back to Quick Spin Test Mode, return to spin with Delay Start & Pre Wash.
Cycle Count = Press the Signal button to see how many times the unit was used
Soft Ware # = Press the Soil Level button to see the software version information
Fault Code Test = Press the Pure Cycle button to view the stored fault codes – then turn Dial to view error codes (Push Start/Pause while the code is displayed to view the number of cycles since the error occurred, push Start/Pause again to get back to faults)
Peripheral (Main PCB) input Tests, enter Service Mode & press Spin key. 
1. Turn the Dial so that the Steam LED is turned on. Next, press the Start/Pause
Key. Temperature will be displayed in Fahrenheit .
2. Turn the Dial so that the Cold/Cold LED is turned on. Next, press the Start/Pause Key. The door switch status will be displayed (CL if Closed, OP if Open).
3. Turn the Dial so that the No Spin LED is turned on. Next, press the Start/Pause Key. The door lock Switch status will be displayed (UL if unlocked, LO if locked).
4. Turn the Dial so that the Light LED is turned on. Next, press the Start/Pause Key. The
Water Frequency will be displayed.
ERROR CODES CAUSES AND SOLUTION
Water Level Sensor   LE 8   
Check for water to the valves, clogged valve screens, defective valve
solenoid coils. Check the water level / pressure sensor Check for 120VAC to the valve. Motor Drive Error or
Hall Sensor error   3E bE 25 E3
Check the motor drive connector, it may be loose. The hall sensor may be disconnected, loose or damaged . Check for a foreign object inside the motor or motor damage. The stator might be loose or damaged. The drum might be overloaded from too many clothes or the relay or PCB might be defective
Water Supply Error nF 3   
Check the water valve wiring harness.
Check whether the water supply valve is clogged with foreign material and whether water is supplied properly.
Check for reversed fill hoses
Check water temperature, if sensed as higher than 50 ˚C in the Wool or Lingerie cycle it will create error.
Check the relays, if they operate correctly replace the Main PCB.
Fill Hoses Reversed nF1 
Correct Hot/Cold hose connections
Drain Error nd        
Check for Foreign material entering the pump or hoses.
Check to make sure the wiring harness is connected properly.
Check the water pump terminal .
Check for freezing.
The water level fails to drop below the Reset Water Level within 30 minutes.
Power Error 2E
Make sure to check the operating voltage. (An error occurs when under or over voltage is supplied.) Check whether a plug receptacle is used. When the connecting wires are too small (extension cord use), a momentary low voltage may drop up to 10 V Main PBA fault (sometimes)
Door Error ds(Before operation)
Check the door switch and latch alignment . 
Check the latch for damage
Check the wiring harness to the latch.
Check the door switch. Replace if faulty.
Check the main PBA door sensing circuit. Replace if faulty.
Finally verify the operation of the Main PCB

Tuesday, July 12, 2016

Sony PlayStation Vita 3G – Disassembling procedure – How to replace the antenna Cable – Laptop repair and service


Category: Laptop Repair and Service 

Contents of this article 

  • How to remove the case 
  • How to remove the connections 
  • How to remove the antenna cable

Sony PlayStation Vita 3

ANTENNA CABLE REPLACEMENT PROCEDURE 
Power off and remove the memory card.
Using a Phillips #00 screwdriver, remove the four 6.4mm screws on the back casing
Using your fingernail or a spudger, pry open the accessory port cover on the top of the device.
Using a Phillips #00 screwdriver, remove the two 5.4mm screws hidden beneath the accessory port cover.
Remove the two 5.4mm Phillips #00 screws on the bottom of the device near the charging port.
Beginning at the sides of the device, use a plastic opening tool to separate the front and rear cases.
Continue working your way around the device gently prying it open.
There are still wires holding the front and rear cases together. You may damage the connections if you yank the cases completely apart.
Gently separate the two cases, minding the battery and the touch screen controller connectors holding the two cases together.
Using a spudger, free the touch screen controller flex cable by gently prying up the connection.
Free the battery cable by gently prying up on the connection with a spudger.
Separate the front and rear cases.
Using the pointy end of a spudger, gently pry the 3G antenna cable off of the wireless card.
Using the pointy end of a spudger, gently pry the 3G antenna cable off the right button board.
Deroute the 3G antenna cable out of the casing and remove it.

Motorola Droid RAZR – How to replace the headphone jack and antenna – 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 headphone jack
  • How to remove the antenna  

Motorola Droid RAZR 

Insert a plastic opening tool between the back cover and rear case at the lower left edge of the back cover.
Pry the back cover up with the plastic opening tool to free the plastic clips.
Continue prying along the left edge of the back cover towards the top of the phone.
Work the plastic opening tool across the top of the back case to free the plastic clips.
The top edge of the back case is very thin. Pry carefully to avoid cracking or snapping it.
Continue prying down the right side of the back cover to free the remaining clips.
Pull the back cover away from the phone to remove it.
The back cover is attached to the battery with a generous amount of adhesive, so you may
have to use quite a bit of force to separate the two pieces.

The battery must remain in the phone and not come off with the back cover or you will break the power lead.
Since the back cover is made of Kevlar, it can handle a fair amount of twisting and tugging without breaking
Use the tip of a spudger to lift up the red silicone cover over the battery terminal screws
and remove it.
Remove the two 3.3 mm T5 Torx battery terminal screws.
Grab the blue battery removal tab and lift the battery out to remove it.
There is quite a bit of adhesive securing the battery to the motherboard. Work slowly to avoid deforming the battery.
Your phone will have a number of metal EMI shields on the motherboard, rather than the bare ICs seen here
Use a heat gun or hair dryer to soften the adhesive underneath the camera cover.
The following steps were performed without the use of a heat gun. Notice that the camera cover cracks very easily if you do not heat the adhesive that holds it in place.
Gently pry up the bottom edge of the camera cover with a plastic opening tool.
Carefully slide the plastic opening tool across the bottom edge to free it from the adhesive.
Continue to use the heat gun as needed to soften the adhesive as you remove the camera cover.
Insert the plastic opening tool underneath the top edge of the camera cover.
Gently pry the camera cover up as you slide the plastic opening tool across the top edge to free it from the adhesive.
Remove the camera cover.
Remove the six screws securing the rear case to the rest of the phone: three 6.7 mm silver T3 Torx screws at the top, four 4.0 mm gold T3 Torx screws in the middle, and three 4.5 mm black T5 Torx screws at the bottom.
Insert a plastic opening tool between the rear case and the motherboard assembly.
Work your way down the side of the phone and gently pry the rear case up.
Separate the rear case from the motherboard assembly.
Remove the three 2.5 mm T3 Torx screws securing the metal chassis to the motherboard.
Remove the metal chassis from the motherboard assembly.
Use the flat end of a spudger to remove the two red silicone microphone covers at the top and bottom of the motherboard.
There is a small metal shield that covers the display assembly cable connectors on the motherboard. This shield is held in place by a few small clips that attach to the surrounding
EMI shields.
Use the tip of a spudger to gently bend the clips out of shape and remove the shield.
Use the flat end of a spudger to pry the three display cable connectors off their sockets on the motherboard.
There are a number of small black plastic clips on the display assembly that hold the motherboard in place.
Release the securing clips with a plastic opening tool.
Use a heat gun or hair dryer to soften the adhesive strip around the perimeter of the motherboard.
Pry the edges of the motherboard up from the display assembly with a plastic opening tool.
Remove the motherboard assembly.
Lift up the anti-static tape covering the camera and earpiece ZIF connectors with the tip of a spudger.
Peel back the tape and remove it.
Unless you have spare ESD-safe tape lying around, you may consider keeping this piece somewhere safe to be reused at reassembly.
Use a plastic opening tool or your fingernail to lift up the tab on the rear-facing camera ribbon cable ZIF connector.
Make sure you're prying on the tab and not the connector itself.
Push the rear-facing camera through its hole in the grey antenna and remove it.
Use a plastic opening tool or your fingernail to lift up the tab on the front-facing camera ribbon cable ZIF connector.
Make sure you're prying on the tab and not the connector itself.
Lift the front-facing camera out of the antenna with the plastic opening tool and remove it.
Insert a plastic opening tool between the antenna and motherboard near the micro USB and micro HDMI ports and pry the antenna free.
Remove the antenna from the motherboard.