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How do I fix not switching from standby red light to on green light?

I was advised to change the power board as I had to switch the mains on and off to get the TV to move from standby to on. Once done and green light on, I can turn on and off, change channel etc... until it's left in standby over night and the wall switch on/off has to happen all over again!! I replaced the power board and sub power board but the same problem exists with a different board.

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Fault to its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

Posted on Apr 16, 2015

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Posted on Jan 02, 2017

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Normal operation then switches off with no red standby light or green light then after 10 - 15 seconds switches back on again, also when on standby it switches to green but with no picture.


Fault to the main power supply regulator section. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

Nov 24, 2015 | Sony BRAVIA KDL-32S5500 32" LCD TV

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KDF-60XBR950 Red light blinks 5 times


Those blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://electro-medical.blogspot.com/
http://homenol.blogspot.com/
http://electronicshelponline.blogspot.com/
If blinks continue without any pause, the main board is faulty.
Search the site by type in the "brand name" to your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Apr 01, 2017 | Sony Grand WEGA KF50WE610 50" Rear...

1 Answer

Wont turn on red blinking light


How many times this standby/power light blinks at one time switch ON? Count it carefully. These blinks are fault indication, and known as blinking codes. From the number of blinks occur at one time switch ON; you can get an idea about the faulty circuit stage inside the TV. This will make repair easy. For more information, check the link http://electronicshelponline.blogspot.com/. If the blinks continues, and non-stop, the fault should be with its main system control IC, and with the memory IC.

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My Sharp Aquos TV went off whilst we were watching it and won't come back on. The red power light flashes twice per second and the green OCD light flashes three times every second. Is there a re


Tries tv unplug replug the tv back about an hour later,might resetting the tv back factory setting and should work again.Still have the problems,the main board it is shorted and dead require changing.The main board that board were the incoming broadcasting signal wire plug into it.U have some basic machanic skills like take things a parts and putting it back together again.Should have no problems change this board at all..Tried websites like Shopjimmy.com,eBay.com to buy a refurbish main board for the replacement.

Feb 24, 2013 | Sharp Aquos Televison & Video

1 Answer

Is there a on of switch and is the green or red light to be on


There is no main AC power switch on the BU series; it's in standby mode whenever it's plugged in.

When playing music normal LED color should be green. After no signal for 10 minutes or so it will turn back to Red (Standby)

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1 Answer

TV cant be switch on, RED LED diagnostic Blinks .. 3 times... then 4 times. Please advise probable cause and send sTV hcematic diagram.


Hi, this is main board failure and you will need to replace this vital board. you power board is fine but, it is unable to send a proper current through the main mother board due to the damage at hand.

May 21, 2009 | Sony KV-29FX30 29" TV

2 Answers

The players red and green light keeps flashing and wont come on


THIS CAN BE SOLVED BY CHANGING THE MAIN POWER SUPPLY BOARD OF YOUR DVD PLAYERS. The main problem should be the Main Capacitor in the circuit. The safer side is to change the whole board.

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1 Answer

NO POWER COMES ON THE TV 43PP8421 PHILIPS


It sounds like the main filter board is defective as thats the power supply board for your model.

Mar 25, 2009 | Philips 43PP9202 43" Rear Projection...

1 Answer

Power problem (switches to standby)


its the problem of the ics on the main power supply board

Do the IC heat sinks get warm??

If they do not, check fuses F852 - 2AMP, F853 - 1.25AMP, F850 & F851 - ALL 5AMP on the power deflection pcb. THESE ARE NOT GLASS FUSES. They are usually about the size of a 1 watt resistor and either green or orange in color. They are soldered in. The nomenclature is printed on the component side of the board. They are all about centered on the opposite edge of the PCB as the high voltage transformer.

If you have cleaned up the mess you describe you most likely have one of these fuses blown.


if dont have any technical knowledge its advisable to call a technician as it is worth getting it fixed.

thanks.


May 19, 2008 | Pioneer SD-533HD5 53" Rear Projection HDTV

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