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Jvc iart AV-36DF74 problem

Juice going in...."on" light blue as usual.....nothing.....black screen, no sound. About 7 years old.....very light usage.

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Age and usage are tricky to determine the life of a set. Chemicals in the electrolytic caps can still age and degrade even tho there is no use. 
Your best bet would be to check with a local repair house to see if they have any experience resetting the set as it may have simply failed it power on test. 
If you are willing to perform some checks yourself, Which I would not advise unless you know what you are doing as the tube can retain lethal voltages for several months after power off. check some simple things that are required for the thing to pass a power on test. 
Check the de gausing coil around the set and make sure it gets power when forst powered up, check the de gausing cols thermal resistor and from there check the power supply voltages. 
If you have a scope check the signals to the tube itself with a high voltage lead..
if you dont have any of theese tools you may need to take it to a qualified repair center. I do know JVC has a very good repair shop here in chicago. but other large cities may be hit or miss.
Also for now, simply try and leave it unplugged for a while in hopes of resetting the internals.
You may also try and verify your inputs, like with the remote check that the input is set to what you need. 

Posted on May 01, 2008

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