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My name is ***** ***** I am a professional here at Just Answer. I noticed that your question had not received a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.
The receiver or antennae/dish may have been damaged when the direct tv rep checked for HD.Most of the time if you have the box display on the screen for settings the issue is the antennae/dish itself or wiring from it to the receiver as the cause needing checked into and repaired.I would have this checked into further to see if the fault can be pinpointed and then repaired from there.
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I havent seen this occur myself but if it was working properly before the technician came out and attempted to obtain HD it is possible a component was damaged with the receiver itself or a wiring or connection fault occurred and caused this issue here.I have seen issues occur like this before just not with this particular model here.
You would need to have a technician check into and test this further to see if they can pinpoint and repair the cause.
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