Toshiba tv My toshiba tv comes on with only sound. It takes a good minute for the picture to come on. The tv is about 3-4 years old.

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Jerry Greenberg

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Some common causes are:

A component is failing and it is thermo sensitive. As it warms up it starts to work in spec, and thus the set can start up. Most of the time this type of component can be in the scan amplifiers or in the power supply.

The CRT is going weak. When its emission level is below a specific value according to the design of the set, the uPC sends a command to not allow the high voltage to start up, or it is not allowing the the electron-guns to be biased on. As the heater in the CRT warms up, the electron-gun becomes in to proper spec, and thus the uPC allows operation.

Eventualy the set will no longer start up, or what ever is failing will fail completely.

You can take the set in for a service estimate, but personaly I would be shopping for a new set.

Jerry G.

Posted on Apr 19, 2008

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