Question about Standard (CRT) Televisions

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Can you help me?

I noticed that you gave someone some help with their magnavox 27' tv. Mine is a CRT and is having a similar problem. When I turn it on, the tv goes on and off several times with a funky picture. when the tv comes on with a decent picture it will stay on. You said this was a power supply issue. My realy question is this; this will be the third tv to die in my room within 2 years. All have been used but in good condition. Is this coincindence or could I have a problem with the power in my wall outlet that would be killing tvs? I am speculating, but it does seem pecular that 3 tvs have died in such a shor time.

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You have to consider that most people usualy sell a TV when they know it is near to the end of its lifespan. In actual fact, most consumer TV sets have a manufacture MTBF of about 30,000 hours to 40,000 hours. There are a very few consumer models that are rated to 50,000 to 60,000 hours. When buying a TV set, if a salesman tells you differently ask to see his figures in writing from the manufacture. There are about 8600 hours in a year.

In many of the lower cost TV sets I have seen them start to fail after about 2 to 3 years of use. What you are indicating here for the type of TV set you are mentioning, the lifespan you are getting is probably about normal.

The combination of cycling the power (turning on and off) in combination of the hours of usage, environmental temperature and humidity, are the main factors that wears down the components in any electronic device.

If you have a modern TV set that is more than about 4 years old, has moderate use, and it is working very good, then you are getting very good value out of it.


Jerry G.


Posted on Nov 08, 2008

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