after a little over a year of use a circuit board , on this ht-920 home theater system , develop a small crack result in intermittent sound . this be the diagnosis of one of they certify repair center . this system sit in the same place the whole time and be not move . the repair center communicate it be a know issue with the poor design , with the external speaker connector be part of the board . this be not in warranty period and the replacement part be no longer available . the repair center think Panasonic would replace subwoofer at no charge as they say Panasonic be aware of the issue and the new sub design have change as a result . do not happen . this be the second instance in the last 5 year where I have have a issue with a Panasonic home theater system and a know design issue . the other be with the ht-900 where a Panasonic engineer admit the defect and they do replace that system . I also own a Boston acoustic -lrb- 9 year -rrb- and Aiwa -lrb- 15 year -rrb- with no issue . to Panasonic 's credit I be very please with the 7 year old tv I own . I will not buy another home theater sound system from they and will think twice about purchase other Panasonic product . this be unfortunate as I be in the market for 2 lcd or plasma 42 '' tv and I have read allot of good thing about they plasma and lcd tv .