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Super Lead


 
12/19/2005 3:53 PM
BA
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Super Lead
My 74 super lead is showing low plate voltages. The EL34's are around 240 volts. Any ideas?
 
12/20/2005 5:49 PM
Rick Erickson
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Sounds like you may be hooked up to the wrong transformer primary tap. Check your heater voltage and verify that it's 6.3VAC or thereabouts.  
 
RE
 
12/20/2005 9:08 PM
BA
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Which wire should be hooked upto the AC the red?
 
12/21/2005 7:58 PM
BA
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Figured it out. Whoever "worked" on this amp before didn't have the power supply filter cap hooked up properly. Now it's where it shold be 440VDC @ the plates.
 
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