Recently this problem occurred;switch on unit -fine,however after a few minutes a 50 mm blue band appears vertically from top to bottom of screen about 1/4 way in on left hand side.unit is @ 2 1/2 years old.Is this fixable or is it terminal?
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1. Unplug unit from wall for 3 minutes; 2. Press & hold Power button for 1 minute; 3. Plug in unit. OR: 1. Unplug for 3 minutes. 2. Plug in unit. 3. HOLD Power Button as unit starts ... hold until the unit flickers on then off twice.
This effectively returns the components to factory specs, much like resetting a computer. It offers a *temporary* fix, lasting 45 minutes to hours. All depends on the unit.
Mom has an Insignia 32" with the same color separation problem, which worsens as the day progresses. Best results achieved while television is cold.
Dust in the unit could contribute to the problem ... try to keep the unit dust free as possible.
Fixed mine, myself! Black 3 inch vertical band (stripe) appeared after a cros country move on our PC-T50G10. Occasionally we would see white band with multicolored pixel width stripes. Took the risk of taking off the back to see if I could see anything. Found places on sides and bottoms where plastic like 2" flat cables could be seen. Guesstimated where the band was and found that I could flip down a black cover on one end of the cable. Tried to pull it, gently. Mistake. Realized it wouldn't one out like computer hard drive cables, so I took out the screws holding the plate on the other end (it's only an inch long). That allowed me remove the cable. Took it out, cleared away dust, put t back and closed the black over. It worked! Put the screws back in, back on and... we are happy (although I do have four extra screws!). Just be gentle.
The printer has a plastic band that runs from one side to the other. The print head has a sensor that passes over it each time it moves. The band is a little transparent and appears to have vertical lines in it. That needs to be cleaned.
Remove power from the printer,
Wipe it clean,
Move the head manually to other side to clean the other areas.
the vertical blue lines indicate some interference from other electronic gadgets near your tv. it started showing up on my sony grand wega when i installed my wireless modem. i almost ordered a new rear projection lamp costing over $100 but decided to experiment. i first moved my desk computer farther away from the tv then isolated the wireless modem router by placing it inside a small glass - the vertical blue lines became lighter in color so i dedided to find another small glass that fit inside the first glass container then put the router in the double glass - no more blue lines and my wireless modem router still works.
do some deductive thinking to figure out what's messing up your tv and isolate the interference.
I've refilled the toner cartridges a few times now and never had a problem with vertical streaks until recently. I refilled both the cyan and magenta and when I ran the test page I had dark vertical streaks on both sides. I fiddled around cleaning things, running cleaning paper through, changing reset resistors but to no avail so eventually decided to buy a replacement refurbished cyan cartridge since the streaks looked mainly blue and bingo... well almost now I just have very light magenta streaks. The issue is obvious when I compared the old and new cartridge, the replacement toner is a much duller cyan and is of the wrong consistency since once it's been in the printer everything gets covered in it which is why I think it causes the banding to occur. I'm just trying to work out now whether to try refilling the magenta again (v. messy) or just go for another refurbished cartridge (£34).