[jlcrawford]

I bought a 56" 16:9 tv secondhand.Its the second latest model and I use it in my lounge with my spare dvd player ,front speakers and sub.
I get hiss from the rear speakers ( wharfdale cubes ) and would like to get to the service menu (engineer mode) to do a more effective job on convergence- anyone know how to or how to eliminate the rear noise?

[BadAss]

Press and hold down the mute button on the remote and press the menu button on the TV to get into the service menu. No idea on the hiss, sorry.