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thanks for responding.looking at the schematic- T3 is across the positive terminals of the 50uf cap.the circuit leaves T3 then ties into the 470ohm screens,...Last edited by ogeecheeman; 05-03-2018, 03:07 PM.
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1990 marshall reissue jtm45 mkii blown ht fuse
(3)12ax7 (2)6L6 GZ34. original condition. head only
the owner is an old friend.got this from a guitar player that used power soak devices. 6L6 version....
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the unit was unloaded-nothing plugged into it AFTER I replaced the fuse and powered up which resulted in another blown fuse.opened unit.no burns or burned...
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yankee ps-m2 pedal board supply failure
looking for anyone that has knowledge of or experienced failure in one of these yankee ps-m2 units.this one was bought new. used it 4 months. circumstances...
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Fender Hotrod Deville crackling at turn on
Boy these things are a mess. In addition to the laundry list of items to correct like- plate resistors,power recap,broken solder joints,broken ribbon connectors,bad...
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I haven't received the part yet but yes there was evidence of heat at the middle pin of 7815a.no crust just a little tan discoloration from heat.I'll get...
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still waiting on part.supply side is +/- 26vdc respectively or each regulator.7915 is right on the money.7815 is shorted.trust me.
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Peavey XR684F mixer repair issues
units lights flicker when turned on then go out.cooling fan stays on.audio is heard when signal applied to power amp in jacks.
after checking regulator...
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enzo-sorry man I am lousy at this forum stuff. when I last posted the administrator info said I didn't have permission to start a new thread. found the issue.of...
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hi folks.new to the thread.anyone hear ever experience this XR684F act like this; at turn on - fan begins to run immediately power light flickers but does...
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kasino fever amp issue
amp is back.different issue. input stage transistors Q1 & Q2 with 8vdc on all legs.???...
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yes the 725 did the trick.pre board now operating fine.power amp output stage looks good too. thanks for the tip. now... here's the $64,000 question. what...
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not to hi jack the thread but a quick question if I may...on PC5102 my signal dies right after pin 8 of IC I1B. nothing on the other side of c22 and r30...
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musicman 112 65 rd
hi man.I know this is old, 2007, but I don't get on the page enough.since you helped me out with some great...
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reflow-reflow-reflow.also,check every screw on the circuit board.they all ground to chassis.be sure to use threadlock. anyone ever seen one of these with...
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