Question about Sony KP-51WS510 51" Rear Projection HDTV-Ready Television

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Is your bulb still good? You can extend its life by making sure the vent slots on the front and back of the set are cleaned out regularly. Vents plugged with dust will not allow adequate cooling airflow over the bulb.

On-line bulb prices range from $30 for cheap Chinese generic bare bulb replacements (quality unknown) to $150 or more for brand-name lamps already assembled into a housing. If you go with the bare bulb, you need to be able to assemble the bulb into the housing (tools required) while wearing vinyl gloves. Touching a bare bulb with bare fingers will ruin the bulb. Skin oil will react with the quartz when it gets hot and cause discoloration and possibly chemical breakdown leading to a bulb explosion.

Posted on Oct 13, 2010

  • Paul Bade Oct 13, 2010

    Oops. I checked and your set is NOT an LCD projector, so it does not use bulbs. It is an older CRT type, which means it uses three picture tubes (red, green and blue) to project the picture. The most common failures I'm aware of are convergence amplifiers (one, two or all three colors become grossly misaligned, usually taking a bow-tie shape as well), picture tube coolant turning yellow (does the same to the picture, or makes it look muddy), and in a few models, internal arcing in a picture tube (bright flashes of the offending color, sudden shutdown with an error code flashing on the power light). Since I only see the bad ones, I can't tell you what the failure rate is. It still doesn't hurt to vacuum out the ventilation slots periodically.



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