I have a Hitachi 55vf820 which I purchased 2 years ago. It was a good purchase until recently the television started to turn itself off automatically about every 15 to 25 minutes with no ryhme or reason. The lights on the front of the set for the power(blue), Temp Indicator(red) and Lamp indicator(red) in that order start blinking. The set then powers off for about 20 - 30 seconds and then turns itself back on again.
I would suggest that you guys turn the unit off when this happens, unplug the unit for 30 seconds, plug it back in, and see if this helps. If this does not solve your problem, you should call 1-800-448-2244, so a service center in your local area can be found for further assistance.
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I dont know the model but general trouble shooting might work. See it you can download the manual and or look at the web site for the trouble shooting section. Check the power cable for breaks, some can be hidden inside the insulation. Look especially at the ends where the wire gets flexed the most. Check if there is a fuzz and it is good. See if there is a removable panel and look inside for bad, burnt, of exploded parts. Read the bulb replacement section of the manual and remove and replace the bulb as instructed. Read turn on instructions and or break-in instructions. Give it some time to warm up.
2 notes; Do all this with out plugged into wall (for safety).
Be sure to try to not touch the bulb and clean it with a lint free clean towel. They are very sensitive to oil or dirt from handling. .
I have been told by a local repair person that Hitachi might replace the light engine at no cost because it is such a big issue... has anyone hear about this... I am going to contact them directly also.
Good Day, CCooke;
Lamp Number for the 55V825 Model is; UX21516.
To replace LAMP remove Front Panel outwards until the quick snap disengages. There is small cover on the left hand side, using a philips screw driver; remove. Two more screws secure lamp, use handle to remove. ALWAYS, unplug TV from A/C power source first. Good Luck, big IRISH.