Your TV has either a vertical alignmet problem or a yoke adjustment problem.
In few cases you can fix a verical alignment problem with a reset procedure , as suggested, but in majority of tv sets you need to pervorm a service alignment procedure.
If is not that is a yoke adjustment problem, in this case TV need a yoke adjust procedure, this must be done on open tv with power on. It is quite a dangerous operation if not performed by an expert, in this case you will have to contact a repairman.
I can be more precise if you post make and model for your TV.
Regards
If it is an LCD then you need to adjust the alignment. Check if he procedure is in user manual, athorwise should be in the service manual, that is not available for download.
Try contacting Sharp and get a copy, or ask the procedure for vertical alignment.
Here is the user manual
Follow the procedure at page 31, I think it will fix the problem.
If you fix it accept best solution.
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Reset the tv set to the factory settings and that should resolve the issue
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This is on a sharp 52 inch Hdlc TV. 1080 AQUOS
I do not have a projection TV. I have A 52 in 1080 AQUOS TV HDLC
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