From the information you have provided the problem is being caused by a failed optical block. This is a very common problem with the Sony DLP TV sets. Click here for lots more information on the topic. Sony issued an alert for this problem and extended the warrenty to cover the repair. Most of these warrenty extensions have ended but yours has a short time left. Click here to view the alert from Sony. To have this repair made outside of the warrenty will be expensive. Click here to view the price of the part.

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Edward

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