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 Post subject: Need help with ESV Fuzz
PostPosted: Tue Oct 14, 2014 12:01 pm 
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Joined: Sat Oct 11, 2014 5:02 pm
Posts: 2
Location: Florida
Hello

I need a little help I bought a ESV Fuzz PCB I got it all together wired for PNP but when I plugged it in to test it I engaged the switch the LED comes on then quickly burned out. I check all my solder joints replaced the LED and it did the same thing. I breadboard the circuit before I built up the PCB with out the LED and everything worked just fine any help would be appreciated.

Thanks
Dave


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PostPosted: Tue Oct 14, 2014 1:51 pm 
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Joined: Tue Jan 02, 2007 1:24 pm
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Location: Albany, NY
When LED's burn out, it's generally because either the wrong value current-limiting resistor (CLR) was installed, or there's a short between the LED and that resistor (R5 on the labeled PCB diagram below, 4.7 Kohms) that bypasses its current-limiting function.

Photos of both sides of the PCB would be helpful. They need to be large, well-lit, well focused shots for us to be able to see enough detail to troubleshoot effectively.

BTW, what are you using as a power source?

Image

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PostPosted: Tue Oct 14, 2014 5:52 pm 
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Joined: Sat Oct 11, 2014 5:02 pm
Posts: 2
Location: Florida
Thanks for the reply duhvoodooman
I went back and rechecked and I had a 4.7 ohm not a 4K7 I feel like a real dope :lol: I replaced the the resistor with the correct one and everything is good now.


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PostPosted: Tue Oct 14, 2014 6:33 pm 
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Very common error, so don't feel badly. Glad to hear it's working for you now....

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“My favorite programming language is SOLDER” - Bob Pease (RIP)

My Website * My Musical Gear * My DIY Pedals: Pg.1 - Pg.2


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