Question about Samsung Televison & Video

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Power flashing on/off when plugged in

Samsung tv, i believe 46", flat screen, model number LNT4066FX/XAA, Version SS04. When i plug the tv in the power and red light on the front just flash on and off until i unplug it again. screen does not come on and Im a Toyota tech and pretty tech savvy so i shouldn't have a problem fixing it, if i could just figure out what the problem part is. any help would be great. thanks in advance.

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  • Samsung Master
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General info first and then some photos---

I see so many here with no sound/no picture issues:

ISSUES:

1. IF sound main fuse/s are good.
2. If no power or standby check main fuse, standby power supply and any signs of damage you can see---burnt parts etc.
3. almost all these sets the troubleshooting involves checking voltages on the main power board to narrow down the problem.
4. Be safe and if you do not know what you are doing don't open the set.

Answers to issues:

1. RE:fuses---if a blown fuse is found get a good replacement(not the generic ones like Radio Shack). Many fuses are special even aside from amperage--Don't put a higher rated amperage fuse in the set for any reason.

2. RE: power supply in set: if total dead aside from main fuse the set uses a standby power supply that runs 7/24 and a main supply (some are combined and some not.

Here aside from checking fuses you want to examine all the filter caps on the power/standby to see if any are puffed up or buldged up in some fashion--I attach a photo of a good one---top should be silver metal and PERFECTLY flat and have no brown material coming out on top or bottom.

What happens in the standby area is they use caps with too low a voltage rating (saves money) which causes them to fail in a year or two---the standby runs 7/24 and the heat dries out the caps and they fail.

3. Trouble shooting consists of the above and then at some point you have to buy and try a board to see if it fixes it or not.

4. Safety first--no TV set is worth getting injured or even killed over. If set is opened at least look for puffed up and bad caps like in this photo.
power flashing on/off when plugged in - 11_6_2012_2_56_25_pm.jpg11_6_2012_2_56_54_pm.jpg

The standby runs 7/24 and to save money they use caps close to the actual voltage---not too smart but saves money when making and the get hot and dry out inside---hence the puff which is really nice as if have that 95% of the time if replace the caps (slightly higher working voltage please) you have a working set.

Posted on Nov 06, 2012

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Posted on Jan 02, 2017

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SOURCE: Samsung flat screen wont turn on red light just flashes..

wont turn on red light just flashes?
On my samsung flat screen tv when you are watching the televison there is no red light on the power button but when you turn the television off the red light stays on all the time? what can I do to turn this light off?

Posted on Oct 29, 2008

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SOURCE: Red Light Flashing 6 times

When the lamp fails in this unit, often the thermal fuse opens. The error code is 6 blinks. To replace this part requires a great deal of deal of disassembly.

Posted on Mar 29, 2008

skotkolr
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SOURCE: funai 32 inch plasma tv

bad components on the power board needs to have service tech look into blown capacitors or transformer on the power board inside the tv.

Posted on May 28, 2008

  • 3 Answers

SOURCE: flashing red light

Your power supply is faulty I'm afraid. Unless you have soldering skills, I am afraid you will need to contact a professional TV repair person. If you feel confident to try the repair, contact me with the model number, and I will let you know what components you need to change

Posted on Mar 06, 2009

  • 1 Answer

SOURCE: Lamp problem or else?

You need to get the ballast repair kit #LSUC0002 and replace the parts to your ballast.

I have the exact same TV, did the above this past weekend, and the TV works like new.

You need to know how to solder though. It's not that hard.

Posted on Jul 14, 2009

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