Question about JVC AV-27730 27" TV

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I have no picture on my JVC AV-27730 tv. Where is the picture tube and can i replace it myself?

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Hello
Picture tubes are available at electronic spare part shops. You have to give them the number and type of the picture tube, to which your JVC TV has. Picture tube, along with its Yoke fittings are integrated, and you can replace it by yoursef at home. Be very carfull in handling the picture tube, as they are highly vacumed, and will explde by hard hits. There will be four seating screws on the four corners of the picture tube, and these slots will clearly alaign if the picture tube selected is orginal number. Diamentions of these holes will be different to spherical and flat picture tubes. So you must first aware of the type of picture tube, which the TV has fitted earlier. OK.

Posted on Mar 06, 2011

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How do you set up a remote on a jvc av-27730 tv


Check this site for more details. "Electro-help" is the site name. Search it by google search. You can locate it, either at the bottom of the first search page, or at the top of the second. It is an electronics equipments repair help site in English.

You can get all details here. Pull up older posts. Codes and setup proceedings are described in detail.

Jun 17, 2012 | JVC AV-27730 27" TV

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Here is the manual for the av 27730


http://tv.manualsonline.com/manuals/mfg/jvc/jvc_av_27330_av27330.html?idRes=720867

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civilman, the first set has either no high voltage or is collapsed vertically, until someone checks for high voltage there is no concrete answer, the AV27730 is vertical collapse from your description, either the voltage to the vertical IC is missing or the vertical IC has failed, not a big deal cost-wise, hope this answers your questions, if not e-mail me back, good luck, BMW Rider

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1 Answer

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1 Answer

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Andy, I'm thinking the buzz is from the deflection coil (yoke) on the neck of the tube or the power supply. Probably not the high voltage as you can hear the "buzz". If it's really that annoying, you can take a length of rubber tubing (no metal) and listen to the buzz coming from the chassis kind of like a stethoscope. STAY AWAY FROM THE HIGH VOLTAGE, please. The yellow picture sounds like a blue chroma failure. A tube can be rejuvinated if need be but that's a job for a pro. Hope this helps.

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4 Answers

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One thing you should not do with electronic devices which have a start up proceedure is to turn the power off, and then on again without a wait of about five minutes. Some equipment manuals warn you about this, and specify a longer period. The start-up has to have time to reset. It will be more likely to reset if you do not leave it on standby, and even unplug it. In your TVs case you need to describe the distorted picture as it may give a clue to a fault, or incorrect start-up. The horizontal line indicates the frame timebase had stopped working. No picture could be a fuse blown inside the set, or a timed cutout which may reset after a time. Try after several hours to see if it comes on. If it is just the frame timebase (vertical) it is worth repairing.

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