If you mean Matsui? Bin it and buy new box. Own Brand Budget boxes are not worth even trying to repair. It could have been made by anyone, it wasn't designed to be repaired and you won't be able to get parts.
T
January 2011
I can answer this question...
set top box will not turn on diagnostic help pls matsi dt3r?
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix dtt receivers.