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XBR-52HX905

 

 

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Use the following precautionary guidelines when replacing the Glass Assembly to avoid material degradation or screen coating degradation, 

and ensure that dust, dirt, or fingerprints are not left between the glass and the LCD panel.

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  Replace the Glass Assembly in a brightly lit and clean room.  

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  Place the replacement Glass Assembly on a dark cloth to make it easier to see dust and dirt particles. 

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  Wear anti static gloves to avoid leaving finger prints on the glass.

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  Use a dry, soft MicroFiber cloth, such as a lint free polishing cloth, to gently wipe the glass to remove any dust or dirt particles. 

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  If the glass needs additional cleaning, slightly moisten the cloth with a diluted mild soap or mild detergent solution, or use a compressed 

air duster (spray can type). 

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  After replacing the Glass Assembly, verify there are no dark spots or finger prints visible on the screen.

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Do Not

 use paper towels, any type of abrasive pad, rags, rubber or vinyl materials to clean the screen. Using these materials could easily 

scratch the screen which may result in permanent damage.

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Do  Not

  use  any  cleaning  product  containing  alkaline/acid  cleaner,  scouring  powder,  or  volatile  solvent,  such  as  alcohol,  ammonia, 

benzene, thinner or insecticide. Using any of these harsh cleaners may result in permanent damage to the screen.

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Do Not 

spray water or detergent directly onto the TV screen . If liquid drips into the bottom of the screen it may cause a failure.

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Use the following precautionary guidelines when handling the LCD Panel Assembly to avoid material degradation or screen coating 

degradation, and ensure that dust, dirt, or fingerprints are not left between the glass and the LCD Panel Assembly.

1.  After removing the boards and connectors, note where the frame is on the panel. (See Figure 1)
2.  Lift the LCD Panel Assembly by holding the top and bottom of the panel approximately 200mm from the edge with your palms on the 

back of the panel. (See Figure 2)

 

CAUTION: Lifting or holding the panel at the corners may damage the panel.

3.  Use the same method when taking the replacement panel out of the carton. (See Figure 3)

 

 

 

 

Figure 1 

Figure 2 

Figure 3

 

CAUTION:  DO  NOT  lift  the  LCD  Panel  by  holding  the  short  side  of  the  panel  or  by  placing  your  palms  on  the  front  glass. 

(See Figures 4 & 5)

 

    

 

 

Figure 4 

Figure 5

 

XBR-52HX905

 

 

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1)  Do not press on the panel or frame edge to avoid the risk of electric shock.
2)  Do not scratch or press on the panel with any sharp objects.
3)  Do not leave the module in high temperatures or in areas of high humidity for an extended period of time.
4)  Do not expose the LCD panel to direct sunlight.
5)  Avoid contact with water. It may cause a short circuit within the module.
6)  Disconnect the AC power when replacing the inverter circuit. 
 

(High voltage occurs at the inverter circuit at 650Vrms.)

7)  Always clean the LCD panel with a soft cloth material.
8)  Use care when handling the wires or connectors of the inverter circuit. Damaging the wires may cause a short.
9)  Protect the panel from ESD to avoid damaging the electronic circuit (C-MOS).
10)  During the repair, DO NOT leave the Power On for more than 1 hour while the TV is face down on a cloth.

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After correcting the original service problem, perform the following safety checks before releasing the set to the customer:

1.  Check the area of your repair for unsoldered or poorly soldered connections. 

Check the entire board surface for solder splashes and bridges.

2.  Check the interboard wiring to ensure that no wires are “pinched” or touching 

high-wattage resistors.

3.  Check that all control knobs, shields, covers, ground straps, and mounting 

hardware have been replaced. Be absolutely certain that you have replaced 

all the insulators.

4.  Look for unauthorized replacement parts, particularly transistors, that were 

installed  during  a  previous  repair.  Point  them  out  to  the  customer  and 

recommend their replacement.

5.  Look for parts which, though functioning, show obvious signs of deterioration. 

Point them out to the customer and recommend their replacement.

6.  Check the line cords for cracks and abrasion. Recommend the replacement 

of any such line cord to the customer.

7.   Check  the  antenna  terminals,  metal  trim,  “metallized”  knobs,  screws,  and 

all other exposed metal parts for AC leakage. Check leakage as described 

below.

Figure A. Using an AC voltmeter to check AC leakage.