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These can generate electrical charges sufficient to damage ES devices. Older monitors with long response times would create display motion blur around moving objects, making them unacceptable for rapidly moving images. Connect insulated gauge jumper wire from the lead of the nearest component on one side of the pattern break to the lead of the nearest component on the other side. As the frequency of the receiver is changed to scan sweep a desired frequency band, a display indicates the power of the signals received at each frequency. If only it was applied to well, you know Work quickly to avoid overheating the circuitboard printed foil.

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Be sure the insulated jumper wire is dressed so the it does not touch components or sharp edges. The physical dimensions of the allowable angle, hereinafter – the viewing angle, are determined by several factors, the main ones are the type of “liquid crystal” and cycles powering.

Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material. Use a grounded-tip, low-wattage soldering iron and appropriate tip size and shape that will maintain tip temperature within the range or ?

If unforeseen circumstances create flztron between the following servicing precautions and any of the safety precautions on page 3 of this publication, always follow the safety precautions. Converted power is provided for IC in the main board. Carefully remove the transistor from the heat sink of the circuit board.

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Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ES device. This part function is for transfer the input AC voltage to a DC voltage through a bridge rectifier and a bulk capacitor. It is not necessary to reapply acrylic coating to the areas.

Solder the overlapped area and clip off any excess jumper wire. Use flatroh an anti-static type solder removal device. This part function is to feed back the DC output changing status through a photo transistor to primary controller to achieve the stabilized DC output voltage.

LG L1752TQ L1952TQ CHASSIS LM57B.zip

The following guidelines and procedures should be followed whenever this condition is encountered. Clip each fuse or resistor lead at top of the circuit board hollow stake. Always unplug the receiver AC power cord from the AC power source before; a.

Discharging the picture tube anode. R, G, B Analog: As is known, LCD display with limited viewing angle. This technique involves the installation of a jumper wire on the component side of the circuit board. Quickly draw the melted solder with an anti-static, suction-type solder removal device or with solder braid. Do not connect the test fixture ground strap to any heat sink in this receiver.

Компьютерные мониторы LG – характеристики, продажа, описание, тесты, отзывы. страница 44

Connect insulated gauge jumper wire from the lead of the nearest component on one side of the pattern break to the lead of the nearest component on the other side.


Response time is the amount of time a pixel in a display takes to change. Reference the 2 3 After finished repair, necessarily push 4ea Latches to inside for restoration. Lf remove the damaged copper pattern with a sharp knife. Solder the IC connection. Do not use freon-propelled chemicals.

Allow the soldering iron tip to reach a normal temperature ? Also, 5V is converted 3. Thoroughly clean the flarton to be soldered. If they are not shiny, reheat them and if necessary, apply additional solder. The following techniques should be used to help reduce the incidence of component damage caused by static by static electricity. Use only a grounded-tip soldering iron to solder or unsolder ES devices.

Desolder and straighten each IC lead in one operation by gently prying up on the lead with the soldering iron tip as the solder melts. It is essential that these critical parts should be replaced with the manufacturer’s specified parts to prevent foatron shock, fire or other hazard.

This is implemented using a radio receiver having a tunable receiving frequency.