Question about Hitachi 43UWX10B 43" Rear Projection Television
what do you mean when you say resistors look like they were dry??
did you try fixing the wires? i would do that first and see if anything else is bad.
Posted on Jan 07, 2008
SOURCE: will not stay on
So if you have a blinking red protection LED:
Turned out the pico-fuse for the -23V had 130 ohms resistance. Initial continuity test feature on my meter indicated it was good since anything under 200 ohms is continuity. All of this after many hours of frustration... and not understanding why all secondary voltages on the power transformer were at 50% for the 2-3 seconds of power up before shutting down.
The "leaky" pico-fuse turned into resistor allowed enough power to illuminate -23V LED despite voltage being 1/2.
Replaced with new pico-fuse to get true -23V. All other output voltages followed suit and TV is working perfectly.
Don't trust the green LEDs. Measure all voltages and be sure to verify 1 ohm or less for every pico-fuse.
I don't understand how a faulty -23V rail would cause this problem. Feedback is from the +31V rail which powers standby 12V safety regulator, 9v and 5v switched regulators.
Anyways it works now.
Posted on Nov 10, 2008
SOURCE: Is the Hitachi 50
The model is high def compatible, however this set has been made for more than one year. Some of the other yr models might not be depending on the set.
Posted on Apr 16, 2010
When u turn the tv on,u hear alot of clicking?That mean the Ballast that help the projection bulb to work is dead.Change the Ballast,might as well change the bulb too.U don't know what is the condition of the projection bulb in.
Posted on May 29, 2010
SOURCE: TV was on working well
You need to check the output voltages of the power supply to see which one goes off. It may be due to short circuits some where, if otherwise,
Your power supply board is dead, u know basic electronics' and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.
I hope this will help to solve the problem.....
Posted on Aug 28, 2011
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