You have sent the TV for repair and now three times, it blows something
the instant anything is connected to it in your house. Other A/V equipment
|NotTaR of Television Sets : TV blows fuses or trips breakers or wors..
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Assuming all the other stuff is plugged into the same outlet asn is 115 VAC
equipment and that thsi happens instantly when the TV is connected:
Next time they bring it back, measure the voltage between the A/V connector
shields and the shields on your cables - I wouldn't be surprised to find some
substantial fraction of 115 VAC between them. This would mean that there is
an internal short in the TV (their problem - any competent service center will
routinely check for signal-AC ground shorts) resulting in a connection between
the non-isolated AC ground and the signal ground. When you connect your
equipment, you complete a path which results in a short circuit. Depending
on the design of the TV and where the fault lies, much more than a simple
fuse may be destroyed. This is similar to connecting a scope probe ground
to a live chassis TV - see the section: Safety guidelines.