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new build 5X3 Fender 2nd input problem
The problem is input 2 a & b when plugged in either one, if you strum the guitar hard the sound cuts out. Then I have to turn the volume all the way down...
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Thanks Enzo you always come through
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Behringer K3000FX cd in left not as loud as right
Using a cd player in The Left side rca jack is considerably less than the right side volume wise.
I tried the other channels left and right and they...
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New Build... When the tone control is dimed I get crackle and volume diminishes.
The build is a (2) 6L6 power tubes and (2) 12AX7 preamp tubes. (2) volume and (1) tone control and (2) inputs. It sounds great until the tone is full. Anybody...
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Can I use just the Mixer section?
Can I use just the Mixer section of the XR-560 and use a external power amp? If so what would I need to do...
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I'm giving up... can't seem to figure this out. Can I use an external power amp and use just the mixer section?
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The 4 resistors all got hot... the zeners were all good.
I will try the CR308 and CR316 lift next.
What can I substitute the output NPN and...
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I got to about half way on the variac the cement power resistors got very hot and somewhere it was smoking.
the double diode is goodLast edited by gcb34; 03-15-2011, 10:34 PM.
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I don't have a scope. Where can I check with two dvm's?
CR304,309,311,317 replaced
U302 replaced
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The cement resistors, ribbon connections, special diode and 180 ohm resistor all measured good.
When I bring up the variac just before it rails I have...
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rectifier measured good.... I hooked everything back up to check the output dc voltage but the fuse blew again.
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going after thr bridge rectifier
thanks for the reply. the output transistors look ok
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Epiphone Zepher HUM
Everything works, just have a loud hum. Where or what to look at?
Thank you
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Peavey XR-560 powered Mixer blowing fuse
I cannot seem to figure this one out.
If I only have 1 power source from the transformer it won't blow. If they are both connected it will...
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Did not help. When I use the low input no red plating. It's when I use the high input. I attached the schematic....
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Sorry forgot to mention that in OP. I did swap tubes and it stayed at the socket.
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Peavey Ultra-120 Head red plating one tube
I have a red plating Power Tube 6L6gc after it warms up. Anyone have a suggestion or schematics? Looking at the back of the head it is the back row tube on...
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