I got my Samsung LCD TV..It was working fine last three yrs..and also my warranty was expired this January 2009..Suddently, some smell came and stop working..do you know what cause the problem?
How can I fix? need your help
Today morning when I turned on my TV tick tick sound came ..now I can't operate it..
Replace the power supply board and it should work again.
Take out the back panel and smell to trace what part is burned. Then check the high voltage circuit near the 120 volts. After the transformer, should be 380 volts AC. After the ratifiers, should be 390 volts DC - by checking at the capacitor as Samsung uses 100 uf at 450 volts. If not, change the capacitor to a higher rating like 350 uf at 400 to 450 volts.
SOURCE: My samsung tv turns on and off repeatedly at
Mine was doing that then it quit even turning on so I replaced the 4 Capacitors today on the power supply board that had bulged up on the top 3 had split open they where on the top right corner of the board where the ribbon jumps from the power board to the main board with ones from Jameco Part Number 606521 they worked perfect but make sure you put them in with the correct polarity easy to do just keep an eye on it. Very simple repair and took me about 30 min to take itapart solder on the new ones and put it back together all for under $10.
SOURCE: Samsung LCD tv - Turns on and off by itself.
Not sure if this is the same problem, but I just moved and set up my Samsung 40" LCD and it has been going off and on by itself with the worst yesterday every 2-3 minutes. After speaking with a friend of mine who is not in the Tv business but just has good common sense, I determined it was likely a bad power strip. The bottom line is I replaced the crappy power strip (which was fully loaded with all 6 outlets in use) with the higher quality one I had in the other room. The problem is gone. I suspect the power strip was failing or real bad quality........try plugging the tv directly into the wall outlet first. hope this helped.
SOURCE: Samsung PS50C91HDX Sound but no picture
It sounds like the main board or screen may have gone
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SOURCE: Samsung LN26A450 LN26A450C1DXZA won't turn on
I had the same problem with my Samsung LN26A450 LCD TV. I found the following YouTube video http://www.youtube.com/watch?v=Mm51C_RDIZE titled "Samsung TV Repair - Part 1 of 2) (also watch Part 2 of 2) which shows how to easily fix the problem. The problem is bad capacitors on the power supply board. My TV had seven (7) bad capacitors - all 7 had dark stains on the ends from leaking electrolytic fluid and one (10V 2200MFD) was blown with bulging ends. I ordered 7 new high-temp (105 degrees C) aluminum radial capacitors from DigiKey.com matching the Temperature, Capacitances and Voltage Ratings for each damaged capacitor that I removed. I followed the instructions in the video except I used desoldering braid ($3.99 at RadioShack) to remove the solder attaching the bad capacitor leads to the power supply board. Once you wick up the old solder from all sides of each lead wire using the desoldering braid, the bad capacitors are easily removed. Total cost of repair including soldering equipment was less than $50. Thanks to “The Professor” for posting the video and saving me $400.
SOURCE: Samsung 32" can not turn on
It could be a faulty power supply (capacitors). To all who are having power supply issues: Samsung is now acknowledging a problem with faulty capacitors. I called 1 800 726-7864 and they said they would repair certain out-of-warranty TVs if the problem is related to the capacitors. I just called and they are sending a service rep out to diagnose the problem
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