Tv problem I have a rear projection tv and it is only 18 mths old and has been fixed once already and it took 2 mths! My problem is after about 2 hrs of watching tv it makes a pop noise goes blank and then comes right back on but we turn it off right away because we are afraid it will stay off like it did last time it had to be serviced! The people who fixed it last time had no idea what we were talking about but it was under warranty! Thanks! Hope someone has heard of this!

It sounds like you have High Voltage arc, coming from back of set. Was there ever Horzontal lines in picture when this happen. Or did your picture ever get dark and miss some color? If any of this happen then it could be coming from High Voltage Transformer, and anodes leads coming from trans.I would say clean spark gap anode leads and make sure all are seated properly(tighten). It would help if you could have the back open and notice when the set does this to see if you see sparks and were from. Hope this helps. Remember be carefull around any Voltage.