Electrical clicking from Samsung 46" LED TV

**Samara** · 29-04-2010

Hi all,

Recently i bought a Samsung 46" LED TV. It was found near the circuit board behind where the noise has been clciking, though not obvious, but in quiet times, or can be heard (to exclude interference set-top box, I pulled out All video, audio cable, no signal blue screen television in the state), I asked a few knowledgeable people, that is due to LCD TV with high-pressure circuit, high voltage transformer caused the road noise, high voltage circuit on the more or less as long as the noise, and said LED TV this much better, because the LED is not high-voltage circuit television, with their jargon is called "lighting does not require high pressure." I would like to ask everyone, especially those using large-size LED TV person, whether behind the current case a lot of noise? You use the LED TV, back if there are such problems more or less? Please reply.

**Ernest** · 29-04-2010

There are many great TV make noice because the size used in current large, will supply road or part of the transformer high-voltage plate or coil dry rope or a resonant voice, normally a time when the manufacturers go through a rigorous factory inspection will not affected customers will be affected by the process of using the factory, there are some good television good shield do not send too much sound. In general as long as the TV does not need too much current when used there will be no sound, except the parts used in very poor indeed! I have seen many 21-inch television and many have small noise.

**Venator** · 29-04-2010

This noise is mostly out of switching power supply may be large as long as the TV needs electricity will have switching power supply to the plate is also possible to solve this way is to change the frequency with a frequency of more than 20K Another way this method every bit of plastic are used. Another possibility is that the audio speaker out, no audio signal when the amplifier into the amplifier chip is still working to enlarge the noise caused by sound environment without the hum of the speaker is the design problem.

**Quentin** · 29-04-2010

On TV speaking, outside the hearing in one meter of electromagnetic noise is not normal. Generally appear to be less than one meter to allow electromagnetic noise, which actually is common sense. Your TV sound occurs, and the TV itself has a direct relationship between the quality of the part, the problem may appear in the power transformer. Check and reply.

**Bon-Z** · 29-04-2010

There are two sound reasons: First, the silicon steel transformer itself is not compacted and there is no infusion of adequate electromagnetic varnish, it is inevitable that produces electromagnetic noise. Second, a fixed transformer or other electromagnetic coil screws, nuts appeared loose, there will be electromagnetic noise, but the voice in front of electromagnetic noise and listen carefully will be different, that the latter would be more sound tip. If it is there in front of a kind voice, that only a change of approach, followed by a voice can be repaired to handle. All the best.

**Gonzo** · 29-04-2010

If the voltage stability at home, then check on the home voltages. Check should be the transformer is not working properly. General do not have noise. Of course, there may be too humid in your house. You need to check also if the audio cable connections, is not a loose place. In watching TV next to no strong source of interference, such as appliance, like cell phones. Check and reply.