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The mod consisting or removing the two 470 Ohms resistors seems also a rather adventurous one; yes, it will result in a resistor of 100 Ohms instead of 82,45 Ohms, limiting so the current going to the rectifier tube, but two parallel resistors somehow cumulate (not perfectly) their power...

Ok, thanks for the link. From what I read also, the 5U4GBEH Electro Harmonix in my amp is maybe a safe bet, driving the power tubes a bit less hard. True or not? I found also this searching on the forum: http://forum.grailtone.com/viewtopic.php?f=31&t=57779 Did someone did that mod on the...

Just a precision: in the amp, I still have the two 470Ohms 10% 1W and the two 100Ohms 10% 1W resistors in place on the sides of the ribbon connector. So it seems truely nothing was modded. And I checked too , the reverb jack is a TS only, so it will have to be replace to have the Drive switch...

Hi everyone, I just checked and the rectifier tube that went installed in my second hand LSS is a 5U4GBEH Electro Harmonix Made in Russia 02 06. That's all I see printed on that one. I know the amp was build to use a Philips JAN 5Y3. I know too from MB that my amp is above the first series that...

Hi everyone, I recently acquired a second hand Lonestar Special SN LS-003943. I asked the age of this amp on the Mesaboogie.com FAQ and had April 2007 as an answer. I asked too if mine was subject to Rectifier failure, and received this answer: "That later serial number should be current with...