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1. Tube amp carries high voltage even when its unplugged because it stores in Capicator
2. Use Plastic Handle Screwdrivers to touch parts
3. when work on amp, speaker Load must be attached at ALL times
4. Use Rubber sole shoe, reach in with one Hand keep other at back, use Chop sticks
General Amplifier Operation
Some DO NOTS
• Never, Never, Never run the amp without a speaker plugged in. This can cause major damage.
• Do not flip the power switch off, and then back on rapidly. This can cause power supply damage.
• Never replace a burned out fuse with a bigger-amperage one. Remember - there was a reason the first one burned out, usually protecting something more expensive. Putting a bigger fuse in will just ratchet up the power level until something really vital burns out. If the second equal-rating fuse pops, turn it off and get a tech to look at it.
• Never ignore signs of high heat inside - a wisp of smoke or a burning smell is NOT normal.
• Your amp produces lots of heat, and will continue to do so even if you block the fresh air vents. Blocking the vents will overheat the amp and you may have to get some very expensive repairs done.
• Never ignore a red glow other than the small orange ends of the filaments. A red glow over a large part of the internal plates of the output tubes means they're about to melt. If you notice this, shut it down and get a tech to help you find out what it wrong.
Some DOs
Add another speaker into the "external speaker" jack; a mismatched speaker load won't kill it, while an open circuit (disconnected speakers) may do so.
Overdrive the stuffing out of it. Tubes are very forgiving of massive overdrives, unlike solid state stuff. As long as they tubes don't overheat or stay overdriven for long periods, it's not fatal.
