Question about Samsung LE40R74BDX 40 in. LCD Television

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Teleevision will not come on the standby switch keeps clicking and the light flashes but no screen comes on we have a samsung 40 inch model le40r74bp

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Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc.
http://en.wikipedia.org/wiki/Capacitor_plague
Please post back what you find.

Posted on Nov 17, 2009

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Samsung Smart TV lights up but when i connect mainboard it goes into standby and starts clicking and standby light starts blinking in 2s and when i checked voltage its like its switching on and off.?


Fault at its main digital 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://electro-medical.blogspot.com/
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.

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I have 40 inch Samsung led tv. The power light comes on when plugged in and when the on off switch is pressed the light flashes 5 times and goes out. The screen is black and nothing is visable when a...


These blinks are 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://electronicshelponline.blogspot.com/

Dec 18, 2014 | Televison & Video

1 Answer

TV won't switch on


1. Your Tv is in need of service.
It sounds like the tube that give light to the screen for visual is defective and needs replacement.
2. The power supply circuit needs repair. Possibly a capacitor or diode has failed in the start up circuit

Mar 19, 2010 | Televison & Video

1 Answer

Samsung 55" flat panel lcd tv is not coming on the standby button light stayes on but no picture coming on it doesn't come on with the switch only by plugin it to the outlet.


Does the backlight come on? or even flash on and off when the TV is switched on? I presume the standby light is showing 'blue' then. Do you have any sound? Also, when the TV remote is pressed, does the standby light flicker?

Feb 22, 2010 | Samsung LE40R74BDX 40 in. LCD Television

1 Answer

I have samsung 40 inch plasma (model LE40M86BD) will not come on . stand by light flashes and clicking relay sound from inside alternately . has gradually got worse.now will not switch on.


You plasma cells have died off. That relay making noise is not good. Sorry about the bad news. Plasma tv are knowing to do that after few years or so.

Nov 23, 2009 | Samsung Televison & Video

3 Answers

The Power Light is Red


yeah, should stay red when unit is turned off, indicating there's power but it's doing nothing.

Per user manual:
Solid red - power off (standby mode)
blinking red - power off (now cooling)
blinking green - power on (preparing to light lamp)
solid green - power on

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samsung tv le32r74bd standby button keeps flashing no piture

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Sony bravia


what model of Sony is it? On many of the Sony projectors, a 3 flash error code indicates the lamp is not properly seated/installed or the lamp door is not closed properly

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