So I have posted this over in the Gallien forums but would like the advice from the Talkbass community as well. I'm having a slight issue with my 2000rb. At first I thought it was just with the left amp, but it seems to happen with the right side as well although not as often. What happens is I will get no sound out of my amp at all unless I turn the master volume up and give the strings a good slap. Then the sound will come in but every now and then will cut out for about five minutes, until the amp seems to have "warmed up." I am skeptical of a dirty effects return jack by using a patch cable and still getting the same issue, although sometimes this does seem to correct the issue. This is a very strange problem indeed. One time I tried tapping the chassis of the amp and the sound would come back whenever I tapped it. But then again there have been times where that has not worked at all. Sometimes all I need to do is work a cable in and out of the effects return to get her going, but other times that gets me no where! Totally perplexed. Could it be a solder joint? Bad master volume pots? A bad cap? There are not many techs in my area and so any suggestions are welcome. Also I probably wouldn't resort to taking it to a tech at this time as it isn't a big issue as long as I get the amp warmed up before the show. Thanks!