Help Bat VK60 owners...lost a channel...


Help. I have a all BAT system, vkp10, vk50se, vk60. I lost my left channel last night. Pretty loud pop. The auto bias lights are out on the amp-left side only. The right channel still plays. I guess I can switch the interconnects to make sure the preamp is still working on both channels. If it's just the amp, how do I trouble shoot this? swap tubes on both channels? Fuses? Help, Help, it's a big pain to pack up and get it back to the dealer...but I might have to...

Anything ideas much appreciated! Thanks...
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I am pretty sure it is a fuse in the VK60. You will have to check them. Do you have anything that tests fuses?
I had something like that when output tube went bad. Fuses on that channel probably died. You can try to replace them. I would call BAT just to be sure.
If the bias lights are out you probably blew the two fuses below the two left power tubes. Lift or carefully tilt the unit up so you can access the bottom, and remove the two fuse holders with a small screwdriver. Replace the fuses (I think they are 3A) and see if the unit functions. Have some patience, for the fuse holders can be difficult to replace in their recepticles.
Thanks everyone! It was the fuses. Don't know why they blew in the first place...but it's working now. It wasn't playing very loud. $1.19 at Radioshack...
My experience with blown fuses on my VK-60 is that the blown fuse indicates a bad, or going bad, tube. Be prepared for it to happen again, and keep a supply of fuses handy.