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Well the hum was from the transformer. I twisted the secondary to the pedal and no hum. Different question, if I lower the value of C5 what'll happen? I've...
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Well when I swap R14 to 10k, it was 24k, the squeal stopped but now its a hum. The hum isn't to loud slightly annoying, probably picking up AC noise.
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Well I went ahead and replaced VR4 and C5 to narrow the suspects. Still no love then like you suggested I started looking at the next components. I found...Last edited by TarheelTechinTraining; 02-20-2016, 09:56 PM.
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Actually I already have both Q1&2 removed and ic2. I was trying to isolate any culprits but no luck yet. Do ya think I've got a problem in the tone s...
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Yes it does, especially the bass. But when I turn all the tone knobs down there's no output, that's normal I think.
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Also I'm considering changing c3&4 to 22uf for both. Think it'll help? Also what about r16, 22k, up to 56k?
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So c5 is in definitely in circuit, soldered across pin 1&2 ic1. Seems correct value, 121 on cap. Also I did swap in a 12au7 and swapped ic's , 4558 for...
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Well it's working, sorta. When I turn the drive past 5 it starts sounding squeaky. Any ideas?
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Well Bill. I owe you a stoogie, it was IC1. I put in a fresh jrc4558 and its working great. Now I gotta put Q1&2 back in,lol. One question, what is the...
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Ok I've removed ic1 and the voltages are better. +15.8 and -14.3 though the negative is higher now its fluctuating about 1/2v. Any ideas or should I just...
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I've reinstalled Q2 and there is distortion though not much. With the effect toggled,pedal on, and drive all the way down it sounds the same as toggled off,...
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Yes its the same. Though there are some discrepancies. Q2is a 2sk30a, on the pedal but a 2n4348 on the schematic. Also c3 is 47uf and c4 is a .022uf on the...
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So I removed Q1 and Q2. Now the volume is low and not much drive. When I toggle the pedal I can hear it. Also the mid and bass are there but the high seems...
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If I removed Q1&Q2 the pedal would be always "on", right? I'm testing if I goofed some how in fixing the switching. Or if there's a problem...
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I replaced Q1 with a 2sk30a and I did try a known to be good tube. Thanks again
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OK so I've gone ahead and replaced all the electrolytics since I had them. But still doing the same craziness....
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OK so I checked the electrolytics in the power supply, all good. Then I started turning knobs to see if I could change the noise. If I turn the mid and bass...
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Dean Markley Overlord not working
So I have just fixed the switching and now this things still not right. When I engage the pedal there is a "motorboating" sound when I turn up the...
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Well now I have the switching fixed, thanks again fellas, the pedal still isn't working. So now a new thread.
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Thanks g1. Also I found a couple of discrepancies. C3 on the schematic says4.7uf, on pedal its 47uf. C4 on the schematic says 2.2uf, on the pedal its 220nf(224)....
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