Question about Mitsubishi WS-55807 TV
There is power.
What is the problem
Posted on Oct 31, 2007
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I am not familiar with this model. A lot of TVs do have cooling fans installed to keep power supplies and processors cool. If a lot of dust has impinged on the fan blades an imbalance may be caused. The imbalance may resonate as a hum through the TV frame. The answer may be simply to remove power from the set, access the interior of the TV by removing the back, typically. Once you have access bond yourself to the frame using a free hand or bonding wire, wrist strap with alligator clip. Locate the cooling fan or fans and inspect for dirt or dust on the blades. If there is dirt or dust on the blades, using a vacuum and small brush gently remove the debris from the fan and surrounding area. Be careful not to make contact with electrical components. Even though you have power removed some capacitors may spark you. Also you don't want static sparks from your hand or equipment to arc to a component and possibly ruin it. Once satisfied that the units are clean, replace the cover(s) and plug it in to see if the problem was corrected.
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