| Re: Toshiba 50H72 half screen is black
If the loss of part of the picture is at the top or bottom, or both, look for bad solder connections on the vertical output. Quite common on earlier toshiba sets, not so much on this model so far, but they may be getting to an age where it starts to happen more.
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Need electronics repair? NESDA is the organization for the most professional servicers in the USA and has a great place to start looking for a shop in your area: http://www.tvrepairpros.com/ | 
