Red led blinks continuously - Samsung Un55d6050 TV

1. If both round and long LED's are blinking, unplug the opener motor for five seconds, and replug. If the lights go back to normal, it was just a program error. If they both continue to blink, it's probably not user-serviceable.
2. If the round LED is blinking and the long LED is off, it is usually the door sensors that are obstructed or knocked out of line.
3. If the Long LED is blinking and the round LED is off, it is usually a bad roller or hinge that won't let the door move freely, something stuck in a track or a bent track.

These 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://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given. Surf the site with patience. If blinks continue without any pause, the main board is faulty.

A blinking red and yellow Status LED will indicate an Error Code that can help determine the cause of a circuit
failure.
• The number of Red blinks indicates the value of the (tens digit) of the Error Code.
• The number of Yellow blinks indicates the value of the (ones digit) of the Error Code.
Example: If the Error Code is "37", the LED will continuously blink Red three times, followed by blinking Yellow
seven times.

See the following for a list of Error Codes.
To perform a System Reset, press and hold the Power button for 10 seconds. Or, unplug the set for 10 seconds
then restore power.

http://electro-medical.blogspot.com/

Six blinks - No Horizontal (H STOP), no raster, goes to the blinking self-diagnosis function immediately. Check C515 & 516 and the jungle IC, IC206. To get more details, http://electronicshelponline.blogspot.com/

You can try unplugging it for a while and then plugging it back in, but according to the manual, the standby LED:
Lights up red when your TV is in PC power saving mode. If the LED blinks in red continuously, this may indicate the TV needs servicing.
(Operating Instructions, Page 22)

how many blinks do you see or count on the red led

Hello,
■ Charging LED 


Charging LED 
Red LED is on = Being charged
Red LED is blinking = Charging error
 Green LED is on = Charging is complete


● If the charge indicator blinks as red, it indicates a battery charging error.
- The battery is not properly inserted
- The terminals of battery are dirty or damaged
If the battery is inserted properly and the charge indicator continues to blink, contact the
nearest Samsung Camera Service Center.


If the charging LED doesn't turn to green could mean a signal that the battery is bad or can't charge 100% anymore = too old, needs a new battery. Hope this helps.

Hello, it was: 
■ Charging LEDCharging LED
 Red LED is on = Being charged
Red LED is blinking = Charging error 
Green LED is on = Charging is complete


● If the charge indicator blinks as red, it indicates a battery charging error.
- The battery is not properly inserted
- The terminals of battery are dirty or damaged
If the battery is inserted properly and the charge indicator continues to blink, contact the
nearest Samsung Camera Service Center.


Or if the red LED remains on without turning green could mean a bad battery that no longer charges to 100% - get a new battery. Hope this helps

The following procedure will re-establish the communication link between the Headphones and the Wireless adapter, this is called "pairing". Before you start please make sure both the headphones and the wireless adapter are fully charged and turned off.
Note: The headphones and the wireless adapter come pre-paired from the factory.
1. Press and hold the power button on the headphones. See Figure 1.

Figure 1

2. Continue to hold the button down until the LED starts flashing red/blue in an alternating pattern. Release the button when the LED starts flashing red/blue. See Figure 2.

Figure 2
3. Once the headphones LED is flashing red/blue, press and hold the power button on the wireless adapter. See Figure 3.

Figure 3
4. Hold down the button until the LED starts flashing red/blue in an alternating patter. The LED will blink blue, then turn off for a few seconds then blink red/blue. Release the button when the LED starts flashing red/blue. See Figure 4.

Figure 4
5. Once both the headphones LED and the adapter LED is blinking red/blue, press the volume up button once on the headphones. See Figure 5.

Figure 5
Once the headphones is paired with the adapter, the LED on the headphones will blink blue once every two seconds. See Figure 6.

Figure 6
When the adapter is paired the LED will be solid blue. See Figure 7.

Figure 7
The adapter may continue to blink red/blue for a few seconds even after the headphones LED starting blinking blue. This is normal; the adapter may take a few additional seconds before the LED turn solid blue.
Once the headphones and the adapter are paired, it is not necessary to pair them again even if the batteries on both units are completely drained.
Additional Note: Repeated pairing will not improve the sound quality or give the headphones and the adapter a cleaner connection.

it is a bad fan. it also could be a power supply. Quite often the real problem is dirt clogging up the fan(s) to the point that they need to be replaced. Operation of the set in a dirty environment is not a good idea