VoltageCaek
New Head-Fier
- Joined
- Aug 11, 2011
- Posts
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So I've just started getting into electronic projects, I did a couple kits, and someone told me I should try a cMoy Amp. So I read about it and it seemed like a good little project for a novice. So I got all my parts from Radioshack (I know, I know. I also got the worst OpAmp ever, but I plan on replacing it, it's more there just so I can get this to work. Cost me a buck.) and then spent a day working on it.
I turned it on, and there weren't any over-heating issues. So I then plugged my iPod in, and used some cheap earbuds to test. There wasn't sound, so I turned it up on the iPod. Near the loudest, the music is very, very, very faint. And then If I max it on the iPod, it is a lot of weird noise, with chirps and scratches. Looking online it sounds like grounding issue. Some say to take a multimeter and test certain areas, but I don't understand where I'm checking.
I checked the V+ and V- to the ground spot, and it's coming out as 8.1 for V+ to ground, and 1.4 for V- to ground. I can't find a solder bridge anywhere though.
I have pictures, if you need another picture of something let me know and I'll get it.
Also, I am following this guide.
Thank you for anyone who can help me figure it out!
http://i1123.photobucket.com/albums/l558/VoltageCaek/IMG_9517.jpg
http://i1123.photobucket.com/albums/l558/VoltageCaek/IMG_9516.jpg
http://i1123.photobucket.com/albums/l558/VoltageCaek/IMG_9519.jpg
http://i1123.photobucket.com/albums/l558/VoltageCaek/IMG_9520.jpg
http://i1123.photobucket.com/albums/l558/VoltageCaek/IMG_9521.jpg
I turned it on, and there weren't any over-heating issues. So I then plugged my iPod in, and used some cheap earbuds to test. There wasn't sound, so I turned it up on the iPod. Near the loudest, the music is very, very, very faint. And then If I max it on the iPod, it is a lot of weird noise, with chirps and scratches. Looking online it sounds like grounding issue. Some say to take a multimeter and test certain areas, but I don't understand where I'm checking.
I checked the V+ and V- to the ground spot, and it's coming out as 8.1 for V+ to ground, and 1.4 for V- to ground. I can't find a solder bridge anywhere though.
I have pictures, if you need another picture of something let me know and I'll get it.
Also, I am following this guide.
Thank you for anyone who can help me figure it out!
http://i1123.photobucket.com/albums/l558/VoltageCaek/IMG_9517.jpg
http://i1123.photobucket.com/albums/l558/VoltageCaek/IMG_9516.jpg
http://i1123.photobucket.com/albums/l558/VoltageCaek/IMG_9519.jpg
http://i1123.photobucket.com/albums/l558/VoltageCaek/IMG_9520.jpg
http://i1123.photobucket.com/albums/l558/VoltageCaek/IMG_9521.jpg