Schematics?

The Gateway model DLP56 TV is made by Delta Electronics. I emailed their technician and got a reply which I have pasted below:
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Dear Hardrocko,

Thanks for your interesting on our Product and apologize for my late reply.

We are not able to provide out service manual due to the agreement with our service third party contractor. Please follow the product's user manual troubleshooting procedure for the problem solving.

For any further question, please feel free to let us know.

Best regards,

Andy Lin
Product Marketing
PTV/VDBG
Delta Electronics Inc.
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As you can see they are not willing to help. Perhaps if you describe your problem someone on this site could help. If not you will probably have to have it looked at by a authorized repair facility. Sorry I didn't have a lot of good news. Send us a description of your problem and I will try to help.