Question about Sony FD Trinitron WEGA KV-36FV27 36" TV

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Sony with diagonal lines

My sony has diagonal lines accross the television on the input #4, which is where cable is. There is no adjustment in the menu that corrects this. I have turned it off and unplugged it several times and this continues. It does not appear on other video areas where the dvd player is working etc.

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Plug your DVD player into input 4 to diagnose if the problem is with the TV input or the source. If the DVD player works fine in the #4 input the TV is fine. Now plug the cable box into the input where the DVD was plugged in and known to function well. It the problem now exists on that input you know it is either the cable box or the cable itself that is bad. A bad cable will cause diagonal lines. Try replacing the cable with the good one from the DVD player. If it is the cable simply replace the cable with a high quality cable. Cheap cables are the cause of these problems 95 percent of the time due to poor sheilding in the cable allows transient signals to pass to the input causing the diagonal lines. This should help you fix your problem. If toy need more help feel free to contact me.
George

Posted on Aug 05, 2008

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?My sony has diagonal lines accross the television on the input #4, which is where cable is. There is no adjustment in the menu that corrects this. I have turned it off and unplugged it several times and this continues. It does not appear on other video areas where the dvd player is working etc.? It is happen right away when you firth turn it on or after 5, 10 minutes? Look like the tuner or PLL module are bad ground on some coil (L). Try to re-solder the entire coil inside Tuner module and PLL control module. Warning: If you not sure what are you doing then hire a qualify technician.

Posted on Oct 18, 2006

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Is it a composite(yellow plug)video input? an HDMI input? What if you switch the output of the cable box to another input, Make sure its not the cable box first. If it happens on another input then the cable box or the connection wire to the tv from the cable box is bad.Good Luck Ps Please rate this thread

Posted on Oct 18, 2006

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This sound from your description like the `line hold' is not locking on from the synchronising signal. The synch pulse, which is at the start of every line scan, is generated by your cable company/box or your DVD player, or whatever input device you have chosen. It is possible to loose this signal from certain video inputs due to the level/amplitude being too large or too small. Try a 50 ohm in-line attenuator of 6dB or 3dB or 10dB (can be made up of resistors) in the input cable. If you have a friend with an oscilloscope he will look at the synch pulse for you.(on the attenuator).

Posted on Oct 19, 2006

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SOURCE: Connect Apple TV to Sony 27FS100

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SOURCE: My Sony Trinitron TV does not respond to remote control commands

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SOURCE: My sony trinitrion always displays the video

Using the TV's remote and having the TV on,
hold down the "reset" button and manually turn off the TV directly from the unit.(not the remote)
Release the "reset" button.
Turn the TV back on-directly from the unit.(not the remote)
A dialog box will appear on your screen.
Choose "Auto" by pushing the + on Channel Selection button on the unit (not the remote).
Use the TV/DVD selection to return to your cable input.

Posted on Aug 02, 2010

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