Originally Posted by Wardevil
... When i play silent nothing happens and as i increase volume after a certain point huge weird fuzz suddenly appears ...
Increase WHAT volume? On your bass? The volume control on the pedal? It could be a problem with the input jack, either it's not making good contact with the cable or it's loose and not making good contact with with the case. You could have dirt in one of the pots - do any of the controls (drive, volume, tone) "cut out" or cause a crackling sound as they're rotated?
Be aware, the English Muff'n uses a step-up transformer to run the tubes at high plate voltage, so please DO NOT open up the unit when it's plugged in, you risk a NASTY electric shock.