Question about Samsung LN55C650 TV
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Posted on Jan 02, 2017
SOURCE: Flickering dots
The symptom you described is called diffusion. A simple alignment, normally in the power supply takes care of this problem. For the nearest Authorized Service Center near you contact Toshiba online at: http://webmail.tacp.com/service/servcntr.nsf/$$Search?OpenForm Hope this helps
Posted on Jun 03, 2007
PEOPLE, YOU NEED TO GO BACK TO THE STORE, BUY THE SAME TV AGAIN, SWAP THE TV'S AT HOME AND RETURN THE "OLD" TV IN THE "NEW" BOX WITH THE NEW RECEIPT. IN THE CASE OF TOO MANY RETURNS, HAVE A FRIEND, MOM, DAD, SISTER, GIRLFRIEND TO BUY ONE FOR YOU AND DO THE SWAP LATER.
NOTE: I REALLY HATE DOING THIS TO THE STORES, BUT IF YOU PAY FOR SOMETHING IT SHOULD LAST LONGER THAN 30-40 DAYS. PROBLEM SOLVED! :)
Posted on Feb 29, 2008
I would suggest to call Samsung to get the Plasma repair under manufacturers warranty. The flickering will not go away until the hardware failure is corrected.
Posted on Apr 15, 2008
The back light is beginning to fail, thats why it goes shaded but you can still the picture on one side, do a google search for back lights for your make and model, there a few how to's to help you with changing the back light.
Posted on Feb 18, 2010
This means absolutely no color - equivalent to a black and white picture. Not even a hint of color.
First, confirm that the source is actually in color - try another channel or input device.
Next, check the settings of the color control - it may have accidentally been turned down. If your TV has some kind of automatic picture mode, try turning if off and adjusting the color control. Try adjusting fine tuning if you have such a control and the problem is with a broadcast or cable transmission.
At this point with a confirmed color signal source, there is a problem with the chroma circuitry.
Note that to the average person, the obvious question becomes: is my color picture tube bad? The answer is a definitive NO. It is virtually impossible for a defective CRT to cause a total loss of color. A defective CRT can cause a lack of a primary color - R, G, or, B or a short between two colors which will mess up the color but is not likely to result in a black and white picture.
Some possibilities in no particular order:
Weak signal or defect in tuner/IF causing loss of signal strength.
Coler killer set too high (internal control) if it has one.
Defective part around the chroma chip/circuit. Faulty color oscillator.
Bad connections in area of chroma chip/circuit.
Defective chroma chip (don't suspect this first just because it is probably very expensive).
Try prodding the main board around the chroma chip with an insulated tool to see if you can make the color come and go.
I had one set where a $.02 resistor decided to open up causing just this problem - perfect BW picture, no color. Another had a coil with a broken wire.
Posted on Jun 14, 2010
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