Question about LG RZ-20LA70 20 in. LCD Television

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LG RZ32LZ55 32 Inch LCD, lost picture in 14 months. Fault - No picture. Lost all picture. Sound works. Don't know how to spot a backlight, but there is no light at the back. Cost wise - Is it worth repairing? Please help. Thanks.

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After switching on with the remote I lost the picture, sound was ok. I checked the power supply for leaking condensators none of those. As none of the backlights was working I looked for a failed component in the common part for all inverter circuits.I found a blown SMD fuse F1 1.0A/67V on the inverter board near the connectors to the power supply. Soldered PCB type fuse on top of the SMD one. TV-worked.again.

Posted on Oct 27, 2011

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There could be two possible failures:
1. The backlights are defective (not a common failure for a 14 months old LCD) or the backlights driver/inverter is defective.
2. Power supply failure(very common failure on LCDs) will cause the symptoms you described.

Posted on May 22, 2008

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