Question about Hitachi 51F59 51" HDTV Projection Television
Try muting the sound on the tv, if it is a loose circuit the sound vibration can jiggle a connection and cause the tv to turn off as apart of its safety feature.
if the tv functions correctly while in mute then you now know it is a loose circuit.
if the tv continues to turn off even while in mute it is shutting down by the main power stand by safety feature, it may need a new main transformer.
if the muted sound solved the problem then unplug the tv and look in the back for the main transformer, the manufacturer usually places the main board on the box of the main speaker, the speaker could be vibrating a circuit loose from direct contact, the main transformer is heavy and would cause issues over the long run with high fadelity sound systems on big screen tv's. check solder points on main board.
Posted on Oct 04, 2009
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Posted on Jan 02, 2017
SOURCE: tv wont stay on .
When you changed the lamp did you clean the "lamp temp sensor"? When you removed the lamp housing from its cradle, you can access it from where lamp goes. It can be cleaned with a Q-tip.
Also, there is a little blue safety switch that is located on bottom right of the light engine tray. It MUST be in the DOWN position when the TV back is reattached to TV. You can use tape to hold it in the DOWN position while attaching the back of set.
Also after replacing your lamp did you reset the lamp life?, You can do this by:
2-press mute+1+8+2+Power. This will access factory settings.
3-scroll to "Options". Press right arrow to next menu. scroll to "lamp life" hit right arrow and click reset.
That resets the lamp life hour meter.
Posted on May 11, 2011
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