Question about Aiwa Televison & Video
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Posted on Jan 02, 2017
You just check whether its speaker has damaged or not. You can check it easly. Just place your ear very near to the speaker side of your TV, and switch on the TV with its panel on-off switch, not by remote hanset. If you hear a "thumb" sound from that side of the speaker, you can make sure that the speaker is OK, and the fault is inside the circuit board of Tv.
If there is no "thumb" sound, open the TV and check the speakers for continuity. You can check the speaker with a troch cell, by touching its poles to the leads of the speaker, with attaching a pice of wire to the cell. If it is found faulty, replace them with an identical type and resistance, Its impedence [resistance] will be marked on its magnet. Choose an exact one.
If speakers are found Ok, and still there is no sound, if your TV is equipped with an earphone socket in front panel, push in an earphone pin into it, and check whether there is sound output from it or not. If there is sound output from it, and you can't get it through speakers, the earphone socket is faulty, and replace it.
if there is no sound from the earphone socket also, just goto the sound output section of the circuitboard of your TV. You can locate that section by following the speaker wire. Look for any loose soderings first. I advice you to resolder all the soldering points of sound output Ic, before replacing it. After resoldering, still there is no sound, check the input supply voltage of that Ic. If it is not there, check for the reason. if it is there and still no sound, sound output Ic is faulty, and replace it with same type and number.
If you need anymore assistance, get me through Fixya. OK.
Posted on Dec 13, 2010
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