Hi folks.
I've got a Philips 50PF7320A/37, from 2005, and about three weeks ago it started having problems. The bottom left-hand corner gets a bit of a "white out" condition, depending on what else is on the screen. The upper left-hand corner has a little bit of a blue glow to it as well.
Pictures are here: http://imgur.com/a/KAdPt/noscript
The bottom area of the screen also now seems prone to after-images for high-contrast or light areas. For example, my kids were watching a DVD of a teacher doing a math problem in front of a green chalkboard. The camera didn't move, which gave the words written in white chalk a few seconds to burn in. When the teacher (wearing a light blue denim shirt) moved in front of the the words, the words "shown through", him. In a minute or two, the words fade out (replaced by whatever other white stuff appeared on screen).
The problem is not the inputs--it happens even when we go to the menu screen, which turns off all external inputs, and also when we view pictures via a USB flash drive plugged into the set.
I pulled the set down, and (as advised on this forum and elsewhere) checked the voltages. Vs, Vsc, Ve, Vset, and Vsc_b were pretty much all on spec, or within .1 volts. Va was .5V off, but I adjusted it, and now it's on spec. None of the caps appear to be bulging or distorted.
I suppose I could play around with those, but I'd rather know what I'm doing that blindly twist knobs, and break something.
Any suggestions as to how to proceed?
Thanks!
I've got a Philips 50PF7320A/37, from 2005, and about three weeks ago it started having problems. The bottom left-hand corner gets a bit of a "white out" condition, depending on what else is on the screen. The upper left-hand corner has a little bit of a blue glow to it as well.
Pictures are here: http://imgur.com/a/KAdPt/noscript
The bottom area of the screen also now seems prone to after-images for high-contrast or light areas. For example, my kids were watching a DVD of a teacher doing a math problem in front of a green chalkboard. The camera didn't move, which gave the words written in white chalk a few seconds to burn in. When the teacher (wearing a light blue denim shirt) moved in front of the the words, the words "shown through", him. In a minute or two, the words fade out (replaced by whatever other white stuff appeared on screen).
The problem is not the inputs--it happens even when we go to the menu screen, which turns off all external inputs, and also when we view pictures via a USB flash drive plugged into the set.
I pulled the set down, and (as advised on this forum and elsewhere) checked the voltages. Vs, Vsc, Ve, Vset, and Vsc_b were pretty much all on spec, or within .1 volts. Va was .5V off, but I adjusted it, and now it's on spec. None of the caps appear to be bulging or distorted.
I suppose I could play around with those, but I'd rather know what I'm doing that blindly twist knobs, and break something.
Any suggestions as to how to proceed?
Thanks!
