I have a Hitachi LCD rear projection TV, model 50v720. As I was watching, the screen went out and the green power light and 2 red lights next to it started blinking, green red red, green red red, etc. it...
I'm making some educated guesses because I could not find the manual for your model. I'm looking at the manual for the 50VS69A. With that caveat having been said, my hypothesis is that you have an overheating problem. The second light is probably the temperature light. Check the vent slots in the back of the set and vacuum them out if they are plugged. Also, look for a dust filter or access door to the dust filter, and get in there and clean that out. Check your owner's manual for specific information; that may be easier than hunting for the filter. Next, feel for air blowing out of the vent near the lamp access door. On the 50VS69A it's on the back of the set on the left (facing the back), but on some models it's just to the left of the center under the screen. If you cannot verify that the fan is running, you may need to replace the fan.
You should clean the vents and filter on a regular schedule. Failure to do so will shorten your lamp life and otherwise accelerate aging of the components in the set. Generally, once a month is sufficient.
Except for the last part and the length of time, the flashing light pattern you describe indicates normal power-on warm-up for the 50VS69A. It could very likely be something else on your model.
If the set is overheating, it will shut down everything. Most sets will also shut down if the lamp fails, but in that case the lamp indicator will be on. Check the label next to the red light to see which one it is.
Regarding lamp replacement:
Lamp replacement instructions are in your owner's manual. It is a do-it-yourself operation with some precautions given in the manual. You can save money by replacing the lamp only and reusing the original housing, but if you go this route, you must be sure you never, never touch the new lamp with bare fingers. If it gets skin oil on it, it will discolor and may even explode when it gets hot. The new lamp may come with a pair of disposable vinyl gloves (the same kind used for food service). Use these (avoid touching the outside of the glove fingers with bare skin) and you should be all right. You may need to polish the ring terminals on the lamp wires in the housing if they are oxidized. A soft white pencil eraser is best for removing a light tarnish. Be careful not to break the terminals off the wires.
The old lamp contains mercury. Dispose of it properly as hazardous waste. If its outer glass is not broken and you are sure it is bad (you can usually see inside it and can identify a broken wire or other sign of burnout), you do not have to wear gloves when you handle it.
May 31, 2011 |
Hitachi Flat Panel Televisions