My 57" sony has a bout 20-25 thin red lines in the shape of an hourglass (half circle down, half circle up) that become ver apparent when the screen fades to black/ darker scenes. I have turned up the brightness quite a bit to compensate but now all i have is terrible contrast!!
Any advice is appreciated.
There's a lot of talk in the internet that the pots in the front of the tv will take these (horizontal?) lines out . i have the kp-57hw40, and there is a web site with pictures on making the adjustment. i believe the bottom 3 pots are blue, green, red going from left to right. mark the pots first so you know where you started, and they say it takes just a hair adjustment counter clockwise to remove the lines. Only go to the point the lines disappear. web site shows how to get front cover off via two screws hidden in bottom and then take off the cardboard cover to get at pots. Not to be smart, but don't be careless, keep hands out since there are high voltage circuits just inside there. . . .
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Try changing the input device to something you are sure, works such as a DVD player. Switch off TV manually, switch off power, remove plug and retry after 48 hours. If problem persists, please refer it to a qualified service technician.
there seems to be a problem in the horizontal circuit...there is a control on the flyback transformer that is labeled "screen". (you'll have to take the back off) The flyback is the component that looks sort of round with the red high voltage lead coming out the top and connecting to the top of the picture tube.On the back of the flyback there will be 2 or 3 controls if 2 there will be 1 focus and 1 screen, if 3 there are 2 focus and 1 screen..using an insulated flat blade screwdriver, slowly turn the screen control counterclockwise to see if this will make the lines go away...if not then there is a horizontal cicuit fault and quit possibly a pincushion problem(hourglass effect)..these will need to be checked by a service shop
I have the same issue. Bought the TV 1/08 and it started showing those exact symptoms about 3-4 months ago. It generally progresses and gets worse. You can try to fix it as it's some kind of TAB connector issue, or keep calling Sony so that the 52" owners of the XBR4 and 5 series get the extended warranty just like the 46" owners received for the same series. If enough of us keep calling, they'll have to act.
I assume that when you get the line you lose the picture, if so, you have vertical collapse, either a dry joint in the vertical section or capacitors or vertical I.C., I would doubt that the scan coil would be O/C as that is rare. if you can't do it yourself I suggest taking it to a repairer, as it should be an easy fix...Hope that helps...Phil
Your format is wrong. Make sure that your tv is in full mode and your direct tv is in 1080i stretch mode. This should correct the problem. Also, WB is having problems. This is common on their channel. If it is happening on any other channel, try the above. Hope this helps. JOHN
on the tv remote:
external entry is highlight (yellow)
right press on the outer circle
then scroll down to video 4 (satellite entry)
(it could be on video 3 depending of the satellite assignment entry)
when video 4 is highlight (yellow)
right press on the outer circle
on the screen you will see 1080i
if settle on an HD channel
hope it will fix your Sony Bravia..