Why your projection TV has color problems
Submitted by Craig Siplin, owner/creator of Cleveland Classic TV
One of the most common problems and repair issues of traditional CRT-projection systems is the failure of geometry correction or convergence. The purpose of this circuit is to align the red, green and blue guns to uniformity. This is achieved by two or three integrated circuits that run so hot you cannot hold your hand on them for long. They are hard-working semiconductors prone to failure.
How do I determine if this is my problem?
A common symptom is the separation of colors. You might be watching ESPN or CNN and notice the words at the bottom or logos at the top have a 3-D effect or separation of one of the three colors. You might also see a bowing on the sides, bottom or top. That is complete failure of both circuits or the supply to them.
Well what does this mean for my TV?
It can be repaired economically. The repair should be done in home. There is no need to remove the TV from your home for an hour’s worth of work. Cost should be about $200 and a service fee of $50 to $100, depending on travel time.
Where do I go from here?
If you do not know the model number and manufacturer for your TV, check online. With that information handy, contact a repair service in your area and negotiate a price and schedule an in-home repair.
Cleveland Classic TV is committed to restoring and keeping cherished, invested big screens alive and well. Siplin has been in the video service industry for more than 25 years, with membership to Spyderman Support Networks and an has an A rating with the Better Business Bureau. Cleveland Classic TV is an Angie’s List 2010 Super Service Award recipient.
As of July 7, 2011, this service provider was highly rated on Angie’s List. Ratings are subject to change based on consumer feedback, so check AngiesList.com for the most up-to-date reviews. The views expressed by this author do not necessarily reflect those of Angie’s List.