Hello,
Does anyone have a schematic for a Cerwin Vega CV-900?
I'm working on one that's kicking my butt.
One side was out, power...
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Cerwin Vega CV-900 problems
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TOA A-912MK2
I was wondering if anyone has a schematic for a TOA A-912MK2?
I found a thread on this site with a .jpeg schematic but I can't enlarge it to...
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Ampeg SVT-5 pro channel problems
I'm working on an Ampeg SVT-5 pro with no output.
I plugged straight into the power amp section and that works fine. My trouble seems to be in the...
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Yorkville ls2100p problems
Hello everyone,
I've been working on the power amp of a Yorkville LS2100P sub. Class D power amp.
When it came into the shop it had...
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QSC CX204V Thermistor
Hi I was wondering if anyone could help in identifying a part. I'm repairing a QSC power amp & I need help identifying R324.
I know it's a thermistor....
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Sorry about the images. I'll download some different ones.
I should also mention that although the gain control doesn't work, (it is on a separate...
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Peavey 16FX mixer input noise
Hello eveyone,
I have a question on a peavey fx series mixer.
One channel on the mixer develops a huge hiss after being on a couple of minutes....
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Thanks Enzo,
Already been to the organ forum. No luck yet.
I know what you mean by getting all the info you can.
I have a great story...
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Baldwin organ service
Hello,
I was wondering if anyone knows where to get info on a Baldwin C630 organ?
I have a customer who needs one repaired. It's a 120 mile...
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Problem solved! (hopefully) After getting cozy and spending some quality time with the schematic I finally deciphered what Marshall has going on with...
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Thanks for posting the schematic.
I've checked the power supplies and they were good. I'm gonna have to get real cozy with the schematic & try...
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marshall jcm 2000 tsl swithching issues
Hello,
I have a 60 watt Marshall TSL in the shop that is having switching issues. It won't switch from clean to overdrive. The leds light up...
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peavey xr684 has 3 dead channels
Hi,
I just got a Peavey xr684 in for repair. 3 channels (5,6, &7) are dead. no signal from either the xlr or the 1/4" inputs. Channel 8 is...
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Thanks for all the replies.
I'm attaching the schematic I found for the amp for everyone to peruse.
Thanks again!!...
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Randall RG100ES overdrive problem
Hello everyone,
I'm having a little trouble with a Randall RG100 I have in the shop. The amp has a pull pot on the treble control that is a sustain/boost...
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Technics px keyboard power supply issue
I'm working on a Technics px keyboard that seems to have a power supply issue I can't trace down.
When the keyboard is powered up there is a loud hum...
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Problem solved!
Bad battery. It was a little strange. I always got 12 volts on my meter but yet the relay wouldn't kick in. So I measured the voltage...
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i'm sorry it is an anchor product.
It does not work with the power supply plugged in either. I'll try charging it and seeing what happens.
...
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Alto pa puzzling me
I have an alto megavox pb-35w battery powered portable pa that's giving me fits.
The problem seems simple but I can't find the solution.
Basically...
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Solid state amp design resources
Just wondering if anyone has any good web links or recomendations for solid state amp design and theory?
I repair quite a bit of solid state stuff...
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