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Re: green dots on screen
Green dots on a LCD screen are burnt out pixels and unfortunately are incurable other than having the TV serviced at a high price. One of the reasons it is a good idea to get a warranty on these types of TVs is primarily due to this very problem....burnt out pixels.
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Problem sounds like ignition noise. Depending on the condition of applainces and electrical distribtion box (Fused/circuit breakers) on the premises. Could also be entering through outside source. The best way to find out if this actually causing your problem is to take a portable radio and tune around 550mhz on the AM band. If you hear a buzz or crackle tune radio to the loudest hum or buzz, then walk around aiming towards the more signal or louder it gets until you find the source. Hope this helps.
Well i really do not know what that is but i do have a thought it could be a bad connector and if you want i have the same tv for sale for $300 shipped just for parts the problem with my pt501 was the screen turned colors but the lamp is in excellent shape and so is the lcos screen the ownly thing that does not work is the main board (ciruit board) i will send you the hole thing for just 300$ shipped if you'd like email me back email@example.com
finally a consumer that gives us plenty of info :)
sounds like an overdriven green tube, the only thing you can try is to find the G2/Focus block assembly, either behind front speaker grill or remove back of set and look for a black box approximately 5"X5" , this box will have 6 philips type adjustment screws(plastic) 3 are for focus, do NOT adjust these,
the other 3 are marked "screen" the center screen adjustment screw is for green, turn it VERY slowly counterclockwise while the set is running and pray that your problem dis-appears, be advised that this is a HIGH VOLTAGE device so one hand in your back pocket the other hand turns the screwdriver, if the problem does not go away you have a poor green tube, good luck, sorry I can`t give you the exact location of the G2/Focus block, manufacturers move them to different places every year.
It sounds like you have a warped shadow mask in your picture tube if your set uses a picture tube.
A shadow mask is like a screen wire that lets the three color guns shoot electrons to their respective phosphor dot on the screen to produce the three primary colors which are mixed properly to produce the scene that is being shown.
In other words you have a bad picture tube.
Hi, J !
You didn't say how old you set is, but to me it sounds like you may have a warped shadow mask in you picture tube.
A shadow mask could be compared to a piece of screen wire. It's function is to make the electron "beams" from the three electron guns strike the proper phosphor dot to produce the proper color- red-green-or blue.
If this is the case the picture tube would requie replacement.