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Aquos lc 42a48l

Stand-by light doen't come on

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  • Televison & ... Master
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Check and replace damaged component/s at its main power regulator board.

Posted on Oct 11, 2013

Testimonial: "Answer is a little bit too general for a layman like me. Could it be the fuse and do I have to remove the back cover to check that?"

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Posted on Jan 02, 2017

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ginko
  • 19396 Answers

SOURCE: LC-37AF3X Sharp Aquos KCD TV

If the TV goes in standby, then it is in protection mode.

Ensure also that the fault is not coming from a faulty receiver box sending
bad signal, check if you get same problem on DVD with no receiver box
connected.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible causes.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , starting the flashing light.

If you are in situation one, then the TV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

If you want to DIY you find parts here,

All: Appliance parts, electronics parts & more from PartStore.com

Encompass Parts Distribution

LCD/Plasma Electronic Replacement Parts: Plasma & LCD TVs, Appliances |


On LCD Pay particular attention at inverter and power board, power board can be inspected looking for bulged or leaking capacitors, then tested with a multimeter. The inverter is more difficult to test , there is need to read voltages, should be done by a tech. Also the LCD controller board can cause same problem

On Plasma, test Sustain (Ysus/Zsus) / Buffer boards , cables to plasma, digital board and power board.

On Rear Projection : check lamp, lamp ballast, power board, and convergence.

On CRT TVs, check ballast , flyback transformer, CRT, Tuner, Convergence.

Posted on May 05, 2009

  • 8457 Answers

SOURCE: Sharp aquos LC-42D62U. Have audio but no picture.

Ur LCD inverter is dead,must replaced to get the picture back.

Posted on Dec 02, 2009

  • 1 Answer

SOURCE: sharp aquos LC-32p50E

I too the tv to a repair shop and they replaced the switch. It cost £70.

Posted on Feb 27, 2010

  • 8909 Answers

SOURCE: Dear sir i need a

If you were to log on to the manufacturer's web site, I think you will be pleasantly surprised as usually one is able to download, by model number, Customer Instruction Manuals, list of Dealers for spare part supplies as required.

The information is normally free of charge.

I hope this helps.

Posted on Jan 16, 2011

sjacobjahn
  • 23 Answers

SOURCE: The demo mode apears every

I'm not certain of the specific model number of your set, but this should be the same for all Sharp Aquos models.

First, navigate to TV input, and select menu
Next, enter setup and select, "ez setup"
In the ez setup menu, select "home", not "store", for television location.

This should turn off the demo mode and solve your issue.

Posted on Jun 10, 2011

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