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There's a good chance they would blow on switch on. The end cap of the fuses bears the name and will show a 'T' or a 'F' before the '4'.ClassicRock88 wrote:Well I pulled the fuses out of my two Grangers to feed them to the Super Bass and I know they were slow blo. The new ones I just bought from a local amp tech. I would assume that they are slow blo. What dire consequences will arise if they aren't?
Ok it's learning time! What's the best way to do this and not die?Anitoli wrote:Looking at the schematic the pilot light is running off the heater winding. If the power switch is off that light should be off.
http://www.drtube.com/schematics/marshall/1992u.gif
Is the polarity correct in the amps power wiring and or the outlet? How much voltage is still coming from the heater winding when off?
An easy way to see how much AC is still present is to just remove one preamp tube and measure the AC voltage at the tube socket of either pin 4 or 5 and pin 9.ClassicRock88 wrote:Ok it's learning time! What's the best way to do this and not die?Anitoli wrote:Looking at the schematic the pilot light is running off the heater winding. If the power switch is off that light should be off.
http://www.drtube.com/schematics/marshall/1992u.gif
Is the polarity correct in the amps power wiring and or the outlet? How much voltage is still coming from the heater winding when off?
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