Question about JVC AV-27530 27" TV
I was given a nice JVC TV (tube) with no remote. It does not receive a signal from the cable. The cable and DVR have been proved working. I get only a blue screen. Paging through the menu has given me no answers.
To select the source you must have its remote control. There is no TV/AV source select button at the front panel of this TV.
Posted on Jan 05, 2013
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Posted on Jan 02, 2017
You are seeing vertical retrace lines. This faut is due to the vertical output section inside your TV. To rectify this fault, you must open your Tv. Just open it after unpluging it from the wall power socket. Locate the vertical output section on the printed circuit board.
It is easy to locate. You can see four wires goes from the deflection yoke; the coil fitted around the neck of the picture tube. Out of which two of them will be thick, usually red and blue coloured, and the other two will be thin. These two thin wires are for vertcal scanning. Just follow these two thin wires, and you will reach a point where these four wires are pluged onto the main circuit board, very near to the LOT. Upside down the printed circuit board, and follow the print of that two thin wires, and you will reach to the vertical output section of your Tv.
Before doing anything, just look for any loose soldering or bad solderings there. It is very difficult to find out loose solderings, as thay will be microscopic, I advice you to resolder most of the soldering points there by applying a little more solder; without making any solder short. Resolder all the pins of the vertical output IC, and see the effect.
If this does not help, replace the two or three electrolytic capacitors, at about 1000MF to 2200MFD there, with same capacity and voltage ratings. Make sure about their polarity, as electrolytic capacitors have both positive and negative terminals like torch cells. Note the polarity when resoldering them out of the board. This must solve ypur problem.
If you need anymore asistance, feel free to contact me through Fixya. OK
Wish you sucess.
Posted on Dec 11, 2010
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