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General information

 

Job Number

 

0106-24

 

 

 

 

Equipment type

 

Television 14 inch

 

 

 

Maker + Model #

 

Daewoo Model DMQ-14A2

 

 

 

Made in

 

France

 

 

 

 

Comments

 

 

 

 

 

 Symptoms observed

 

 

BAD

1

When activated from standby, the TV shuts off

 

 

 

 

 

 

GOOD

1

Powers up to Stand-By mode

 

 

 

 

 

 

  Repair notes

 

Full repair description and observations

 

1

When the TV was flippedon the side and turned on, the raster with grains appeared

 

 

2

On inspecting the circuit board, cracks were found around the LOPT,and the track sending the input pulses to the transformer was open.

 

 

3

The track was closed back with wire and the TV fault was fixed

 

 

4

About one month later, the client reported the same fault and it was noted that there was another open track dur to cracks in the PCB.

 

 

5

These open tracks were closed again with soldering wire from end to end aver the crack. Other tracks which were suspect of forming future tracks were treated similarly. 4 tracks were closed, all of which were inputs / outputs of the LOPTX.

 

 

Repair summary

Cracks and dry joints at the Line Output transformer input

 

 

Precautions, fouls and advises

 

1

Note cracks and dry joints more carefully to prevent further same faults in the future.

 

 

 

 




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