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There is an update here from AGA: I was simply using an on/off FS. I guess it has to have a 3.5K resistor in series. Who knew?

Yeah... I really liked the tone after I went to MESA preamp tubes (one had been replaced with a Sovtek that muddied the sound in V3... have had better luck with a Groove tube, but am now trying a Russian 2 in V1 and swapping the slightly weaker V1 original Mesa STR into V3.) Finals had been...

More info: We have a thread going on AGA. Folks seem to think it is supposed to be the 1500 ohm 5 watt resistor shown in the High-Voltage supply at http://www.tubefreak.com/cal50pow.gif Let's try this fancy image linker here... What do y'all think? Replace the supposed 200 with a 1500, or...

I have a 50+ Caliber that has blown... just stopped making sound, and emitted a burning odor. On opening it up, I noticed one reverb spring had come off, but there is more. The resistor marked R261 completely toasted. Here are pictures...