How to Access the Service Menu on a Sanyo LCD TV | Techwalla
https://www.techwalla.com/articles/how-to-access-the-service-menu-on-a-sanyo-lcd-tv
Using the service menu, you can make changes to a TV's picture geometry, white balance and color presets. The service menu, however, is intended to be used by trained professionals. Therefore, if you don't have experience changing settings through the service menu, you should not access or make changes using the service menu on your Sanyo LCD TV.
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