I'm working on repairing a 1981Ibanez CP9 compressor pedal, with a very strange problem: It works seemingly perfectly when turned...
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Bizarre problem: Ibanez CP9 Compressor - No sound when off
Hi everyone,
I'm working on repairing a 1981Ibanez CP9 compressor pedal, with a very strange problem: It works seemingly perfectly when turned...
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Roland Jet AP-7 issue
Hey guys. I have a nice Roland Jet AP-7 that's giving me quite an issue. The "distortion" effect seems to work fine, but none of the positions...
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Boss DM2 Analog Delay Repair - Low supply voltage
Hi everyone,
I've been working on repairing a version 2 Boss DM2 analog delay, service manual attached. After sorting out a short at the potentiometers,...
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Vox AC15 custom - extension ouput
Hi,
Something broke in my Vox AC15 custom, maybe you are familiar with this kind of problem...
I tried to plugin in an acoustic guitar with a...
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1980s Ibanez FL-9 flanger repair
Hi everyone,
I've been working on repairing an original Ibanez FL-9 Flanger, and I'm quite stuck, to say the least. Here are the symptoms:- Only
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beginner amp builder questions
hello! I am new to guitar amp building and have some questions about how to go about building amps.
1. how do I figure out how much voltage I...
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Amp mash-up build
Hello, I have some questions about building an amp with sections from a few different amps. Would It be possible to take a solid state pre amp, add a graphic...3 Photos
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Ampeg SVT-350H problem
I have an Ampeg SVT-350H that isn't outputting to the speaker jacks. It outputs through the power amp out jack, so the problem must be in the power...
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Ibanez PT-9 Phaser Bias Adjustment
Hi everyone,
I've been working on repairing a Ibanez PT-9 Phaser, and have already made a lot of progress, thanks to help from this forum!...
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Ibanez PT-9 Phaser LFO Failure
Hi everyone,
I've been working on repairing an old Ibanez PT9 phaser (service manual attached). The unit had leaking capacitors and damaged tracks,...
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Electro-Harmonix Electric Mistress Repair
Hi everyone,
I recently got an Electric Mistress for repair, and had a question regarding voltages:
When I first got the pedal, one of...
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Ross Big Mouth Bass Amp
Hello,
I'm posting this here because I haven't been able to find much online, so this is a bit of a shot in the dark. A buddy of mine has a Ross...
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Replacement for E1A606-724 / 2-24b power transformer
Hello, I am looking for a replacement transformer for an old E1A606-724 / 2-24b power transformer that has 5 wires coming off it. Cant find any online with...
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Electro-Harmonix LPB-2 True Bypass Mod
Hi everyone,
I've been attempting to convert a EHX LPB-2 power booster from the 70s to true bypass, and add a DC jack. I was hoping this would...Last edited by clarisso11; 01-02-2021, 07:42 PM.
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Echoplex EP3 tape head wiring polarity
Hi everyone,
I've been repairing an Echoplex EP3, and after lots of help from this forum, I have identified a dead record/erase head as the...
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Help confirm dead tape head in Maestro Echoplex EP3
Hi everyone,
I hope this will be a quick one for someone with experience working on tape echos:
I've been working for a while now...
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Session Rockette 30 humming/crackling
Hi, I have a Session Rockette 30, a British solid state amp from a couple decades ago. In the last few months, I have noticed a consistent humming/crackling...
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Troubleshooting and reviving a Echoplex Ep-3
Hi everyone,
many months ago, I purchased an old Echoplex EP-3, in very bad condition. I took it apart and de-rusted/cleaned everything, exchanged...
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Blackstar HT40 constant noise
Hello!, here my message in the bottle
My amp sadly start doing constant noise, -independent of any volume level -, just a low freq hum that stops...