One channel of 4B-ST is dead?

fengzeiss · « **on:** 22 Dec 2005, 07:27 pm »

My 4B-ST have served me well for over 6 years. But someday, one of the channel can't make sound suddenly. The pre-amp functions normally. What happened to my 4B-ST? The fuse seemed O.K. Thanks for any opinion!!

bsmith15 · « **Reply #1 on:** 22 Dec 2005, 08:24 pm »

I am not at all an expert on anything electricial; but several years ago I had the right channel stop functioning in a Rotel amp I had. I checked the fuse and it looked to be in perfect condition so I thought it must be something more serious and took the amp in for repair....sure enough all it needed was a new fuse. I would change the fuse if you have one just to be sure.

James Tanner · « **Reply #2 on:** 23 Dec 2005, 01:02 pm »

HI,

Is the right channel LED out?

james

fengzeiss · « **Reply #3 on:** 23 Dec 2005, 05:06 pm »

Two led appeared green , it seems function well. Will it be helpful if I switch the button(unbalanced-balanced and individual-bridged) repeatedly, supposed it is due to switch contact problem?

James Tanner · « **Reply #4 on:** 23 Dec 2005, 05:30 pm »

HI,

So it is working OK now?

james

doorman · « **Reply #5 on:** 23 Dec 2005, 07:01 pm »

Luckily, they have a 20 yr. warranty

fengzeiss · « **Reply #6 on:** 24 Dec 2005, 11:11 am »

Good News:
The problems is solved. I switch the individual-bridged and balanced-unbalanced button repeatedly. It did work. The sound come back.