Question about Samsung Televison & Video
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Posted on Jan 02, 2017
If the set powers off after coming ON for some time, then it is possible that there can be the following problems. The advice/tip given is with the belief that you are competent. You must attempt to do it yourself only if you are technically/logically able, especially when dealing with delicate devices, damaging while trying to open, Probing electrical/electronic circuits with high voltage or delicate components. Since the advice given by me is with the inputs provided and not based on a visual inspection, there can be further reviews required in some cases.
So check these tips.
1. When the set switches off , tap on the power board and main boards, if the set power back now, then the fault can be poor soldering on the power supply or main board.
2. If you notice that the TV cuts off when a particular section heat up( you must check this with the set switched off, touching the different sections) , if so force cool this section and see if the set switches back. Alternatively you can simulate the heating or cooling using a hair dryer or a freeze it spray, so that the particular suspected area can be found.
3. when the fault occurs, check the voltages on the main board, the power supply , check the rail and + B voltages, particularly to the driver sections.Only a good trace of the missing voltage will lead you to the fault. So take the tip from a missing voltage on shut down.
Finally solder all IC pins, power drivers pins and connectors.check this link for soldering tips:
The advice/tip given is with the belief that you are competent. You must attempt to do it yourself only if you are technically/logically able, especially when dealing with delicate devices, damaging while trying to open, Probing electrical/electronic circuits with high voltage or delicate components. Since the advice given by me is with the inputs provided and not based on a visual inspection, there can be further reviews required in some cases.
Posted on Oct 19, 2010
SOURCE: My TV keeps sutting down.
The power supply board is dead, do you know basic electronics' and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.
I hope this will help in solving the problem.....
Posted on May 27, 2011
It could be the temp sensor going bad. This sensor sits on top of the metal housing which the bulb assembly slides into. The bulb assembly will have a hole on top and this is where the sensor is above. There is a small blue and white wire that plugs into it. If you pull the wire out and put a paper clip or wire in the coupling you will basically bypass the sensor connecting the blue and white wire. If your tv turns on then that is your problem. Its cheap too. Here were my symptoms..1] Turn tv on 2] Bulb would light up..(which eliminates the ballast) regular picture would show up (which eliminates the bulb and color wheel) 3] 30 seconds later tv would shut down with 3 flashing lights. After bypass the tv turned on as always and hasnt shut down yet. Always un plug tv first. Get the replacement part to avoid overheating and possible fire
Posted on Aug 12, 2011
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