Question about Televison & Video
The most common reason for the problem you are describing are failed capacitors.
These sets are assembled using the wave soldering process they are known for having cold solder connections. This model of TV has over 2,000 parts, which includes millions of transistors inside the integrated circuits. The capacitors will change value, leak and become defective. Resistors will change value and burn. Diodes and IC can go bad.
This may have a domino effect and cause other parts to fail. Replacing one defective part may make the TV operate for a short time but the part will fail again if the parts that caused the failure to begin with are not replaced.
The only way to know for sure which parts that are no longer within factory specs and for a proper repair all the electronics must be diagnosed by someone with the correct electronic test equipment specifically designed for TV service and the skills to use the test equipment.
Try checking the replaced parts once again and check for the worn capacitors in the power supply, This could also lead to damage to all other parts
Please leave comment,if you need further assistance
Posted on Sep 29, 2009
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Posted on Jan 02, 2017
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