When ever I'm watching the TV I get these vertical lines. At first they are very light you almost can't see them. After 15 minutes sometime an hour they start to get very thick and you can baely see the picture.
They also seem to flicker. I had the TV repaired twice before I got this problem. 1st - lamp was changed, 2nd - powersupply was replaced.
about a year later I get this problem. I was going to replace the lamp but I want to make sure that this problem has something to do with the lamp.
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Hi , it seems you are experimenting a light engine problem.Here's how your tv works: http://www.youtube.com/watch?v=ZLLHnQ4y-wo Basically there's 3 LCD chips that create the colors and image by blending together.When these chips start to melt you will get those blue spots, pixilation even vertical lines.You will need to replace the light engine. Have a blessed one!
Hi , it seems you are experimenting a light engine problem.Here's how your tv works: http://www.youtube.com/watch?v=ZLLHnQ4y-wo Basically there's 3 LCD chips that create the colors and image by blending together.When these chips start to melt you will get those blue spots, pixilation even vertical lines.You will need to replace the light engine.You can find it here: http://www.discount-merchant.com/PANASONIC-521A2C52-p/1177904.htm Have a blessed one!
Exact same thing happened to me last night. The TV only received High Def chanles. When switched to reg. chanels, there are green vertical lines. Light is definitely on and visible in the back. Now goes out after abut 30 sec. Misery loves company. Will watch the site for a solution. 4yrs. old just went off extended warranty 45 days ago. damn
The vertical deflection output chip or associated cirutry including the coupling cap and controls. Some units have vertical output transistors which can short and open the B+ resistor feeding the transistors.
Sound like you lost Vertical Deflection.Youshould not have a line across the screen because this could destroy the threeCRT Red, Green, and Blue (Picture tubes) if left on to long.There is a protection circuit built in to protect your CRT’s.Check on the PCB-SIGNALboard (Tuner located on this board) transistors Q-206 Collector should be around 1 Volt Base and Emitter 0V. If the voltage atthis point is greater then 5 Volts the Vertical output IC-401 (Mounted on heat sink 7 pin inline IC) is bad, Part # LA7845. Pin Voltages should be PIN 1= 0V, 2= 34V, 3= 32V, 4= 3V, 5= 3V, 6= 33v, 7= -6V. Data sheet located at http://pdf1.alldatasheet.com/datasheet-pdf/view/40357/SANYO/LA7845.html
Bad capacitors on the FMT there are 3 1000uf 16v capacitors that will cause that symptom. Your onscreen menu is unaffected right? If you need more info or a link to the service manual for thet model you can get the service manual at this link. http://servicemanuals.vstore.ca/