Q. I bought a used LCD monitor at a computer show, it worked fine there. I brought it home, and layed it on it's screen to connect the cables... now there are some permanent dark spots on the front. The monitor has no warranty, is there anyway I can fix these spots?
A. If they're not dirt, it sounds like the LCD sandwich has failed at particular points. LCD screens work by sandwiching the LCD material between two panes of specially prepared glass. The glass has circuitry on it (TFT = thin film transistor), and when the transsistor changes voltage (at a pixle point) the LCD material physically twists or untwists and becomes transparent of opaque. Lights (cold flourescent bulbs) either shine through or not.
The LCD material is extremely thin, and point pressure on the sandwich may squash the sandwich enough at that point to disturb the LCD material enough to cause it to fail.
Repair of LCD panels is nearly impossible in the real world of after sale repair, as opening the sandwich will alomst always cause enough contamination to ruin the entire display. The usual rememdy is to replace the LCD sandwich panel, but this is quite expensive. since new LCD monitors cost as little as US$169, it's generally not worth even attempting a repair to the LCD panel. A broken connector or a switch perhaps, but not the LCD panel.
The LCD material is extremely thin, and point pressure on the sandwich may squash the sandwich enough at that point to disturb the LCD material enough to cause it to fail.
Repair of LCD panels is nearly impossible in the real world of after sale repair, as opening the sandwich will alomst always cause enough contamination to ruin the entire display. The usual rememdy is to replace the LCD sandwich panel, but this is quite expensive. since new LCD monitors cost as little as US$169, it's generally not worth even attempting a repair to the LCD panel. A broken connector or a switch perhaps, but not the LCD panel.
Does LCD monitor or plasma give more better quality image?
Q. I know LCD monitor is cheaper then plasma but more LCD have 1080p, right? Which is better? Why there is a price difference? I know LCD is liquad, and?
A. Plasma has better response time so will show movement better than an LSD TV; important when watching action particularly sports. A good LCD has a 5 Milli Second response time where as a good plasma 0.2 MS.
LCD screens are generally much brighter and better suited for rooms the receive a lot of light. Plasma's are better in darker rooms; easier on the eyes.
Generally plasmas are 42 inches or larger. LCDs are manufacured by more companies.
LCDs sometimes are manufactured with pixles that are burned out causing a dot on the screen. Plasmas have problems from screen burn.
I decided after much research to forget about buying a set for another year; I was holding out for 42 - 48 inch 1080 p plasma. A couple of weeks ago Tiger Direct had a 42 inch LCD 720 p set on sale for $699 and I couldn't resist. I am extremely happy because I am getting a great picture, I have all the bells and whistles (PIP, split screen, TV tuner, multi connectors including computer) and I paid a lot less than anything I have seen before or after.
My advice: Get a good inexpensive 720 p that you you like (plasma or LCD) make sure it has an antenna (broadcast hi def is better than hi def on cable or satelitte), and enjoy. 1080 p is more expensive and really only gives a better picture with a Blue Ray DVD (also relatively expensive).
By the time prices fall for Blue Ray machines and discs and more channels are broadcasting in hi def the price of TVs will fall dramatically. Move the set you buy now into another room and get yourself a bigger set
LCD screens are generally much brighter and better suited for rooms the receive a lot of light. Plasma's are better in darker rooms; easier on the eyes.
Generally plasmas are 42 inches or larger. LCDs are manufacured by more companies.
LCDs sometimes are manufactured with pixles that are burned out causing a dot on the screen. Plasmas have problems from screen burn.
I decided after much research to forget about buying a set for another year; I was holding out for 42 - 48 inch 1080 p plasma. A couple of weeks ago Tiger Direct had a 42 inch LCD 720 p set on sale for $699 and I couldn't resist. I am extremely happy because I am getting a great picture, I have all the bells and whistles (PIP, split screen, TV tuner, multi connectors including computer) and I paid a lot less than anything I have seen before or after.
My advice: Get a good inexpensive 720 p that you you like (plasma or LCD) make sure it has an antenna (broadcast hi def is better than hi def on cable or satelitte), and enjoy. 1080 p is more expensive and really only gives a better picture with a Blue Ray DVD (also relatively expensive).
By the time prices fall for Blue Ray machines and discs and more channels are broadcasting in hi def the price of TVs will fall dramatically. Move the set you buy now into another room and get yourself a bigger set
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