Question about Hitachi 55HDM71 55 in. HD-Ready Plasma Television

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T V will not turn on.all power points checked,no power coming into TV

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This is a failure of the power supply unit. SMPS unit. Please check this link for tips:

http://www.fixya.com/support/r5826301-working_switch_mode_power_supplies

Posted on Oct 03, 2010

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  • 2 Answers

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Posted on Jan 02, 2017

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is the tv plugged into a power point maybe someone turned off the power point. If it is into a power board maybe a surge protection has tripped on the power board ?

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Your tv set refuses to turn on because there is something wrong with unit. I would first check the power supply, a common source of hassles. If the power supply is good see if the unit has some provision for error codes in times of difficulty to point you in the right direction.

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Check with Samsung first, most of their TVs and monitors come with a 3 year warranty and if you open the unit it will void the warranty.

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Aside from checking the fuses it likely will require a technician or a shop to examine the set to see what is wrong and what needs to be replaced.

Sounds like a power supply issue but that would need to be checked.

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I have a Philips 52PFL7422D/37 52" TV. For the last year now the TV will make a clicking sound like it is turning on but never does. After a couple of seconds to a minute the TV makes another...


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1 Answer

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If the lights don't come on the tv ,try to connect the tv to the other power point
and check if it powers on, if its does not power on then its the problem with
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Good luck...

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Building power outage caused TV not to work


Symptoms of a Defective or dying Power supplies on LCD TVs.
1. Light(s) on the front panel are behaving not normal example, blinking, amber color or not steady, fainting, etc.
2. TV not turning ON properly.
3. TV turns OFF by itself.
4. Needs to be unplug to many times to make it work.
5. Humming or high pitch noise heard through speakers or at the back of the TV.

I repair these power supplies. Write to jah2mil@hotmail.com

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4 Answers

Turns off as soon as I turn it on. ws - 65819


I had the same problem. The repairman said the Convergence ICs were bad, located on the big aluminum heat sinks on the center board in the TV. He replaces both, and a couple of fuses (that look like resistors).

The tv worked fine for a couple of days then did exactly the same thing. They are coming back out to fix it next week. If there is anything different, I'll post an update.

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1 Answer

Screen went black, made a squealing noise and smelt like burnt plastic.


hi sir
if it is in warrenty period.. please cheak it or just open the cover see whether the 250 v coming in the start point of the circuit board and see whether an fuse wire is burnt out , if burnt out replace it and check whether the further voltage comes after step down the transformer.. if it correct & fuse is replaced it wil work. thank sir

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