Question about JVC AV-36230 36" TV

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No picture after tv warms up,the screen goes 90% black. if you give it a quick slap on the side, it comes back, but only for a while.

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There seems to be an intermittant solder connection inside the set somewhere on the printed circuit board. If you have any soldering or solid state repair experience, open the set while its one, BUT please be carefull, and probe around the high voltage flyback transformer with a wooden tool or rod( a wooded spoon works good). If you have not had any experience with printed circuit boards and or solid state electronics, please call out a pro to assist you as a TV set is no place to be experiementing around inside of. The longer you let this go, the more it will end up costing you. Good Luck PS please do not forget to rate this thread.

Posted on Dec 07, 2006

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Posted on Jan 02, 2017

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Get a can of compressed air OR acces to a compressor at your local garage Get them to fit the triggered air blower tool to it.

Blow around the lens in all the extension joins the firmly slap it in the palm of you hand with the side of the camera making contact with you palm. Do the procedure two or 3 times and inbetween the slaps turn it on to activate the lens mechanism. I have now fixed about 80 of these cameras with this method. I obtained the fix from Sony who charge $90 to do exactly the same. Keep at it as it will eventually work. One tip, make sure the battery is charged before you do this.

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You have actually diagnosed your own problem, Let me explain; the line "I can slap the left side of the tv and picture will almost always come back on" This indicate some form of poor connection (cold solder joint). If you have a soldering iron, solder (circuit type not pipe type), and a multimeter. Use the soldering iron and solder to redo the cold solder joints , and then test it (the connection) with the multimeter.

I hope this helps

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