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I have a Dish Network labeled HD40-300 40" rear projection HD TV. From my searches online seems to be the same as a RCA D40W20 or GE D40GW10. Have seen references to chasis ITC222 and ATC221, not sure which this is.

The problem is that when I power the tv on, it flashes a green screen (with horizontal squiggles), then goes black. Any ideas or troubleshooting steps? If it is a (reasonably priced) part, then I could handle the repair.

Any help would be appreciated!