N
NathanPonzar
New member
Hey everyone.
I was hoping that maybe someone has had some experience repairing shure SM57s. I bought a broken one off ebay as a kind of project. It's proving to be a little more difficult than I thought it would be.
I put up what I think are the best pictures I can get, tried to get a variety of angles. Really, where I am stuck now is that there seem to be 4 wires coming out down by the XLR pins, only 3 of which are attached to the XLR connectors (properly) and then there is 1 wire just hangin out with a loose end. I don't think it's supposed to be attached to the 4th XLR tab because it has no signs of solder or of a wire having broken off of it. I can't see up the bottom of the microphone well enough to see what's going on on the bottom side of the transformer. I can sorta see the top of the transformer, but I can't really see any of the joints of the wires going in and out of the transformer. I'd like to remove it and get a look at everything disassembled, but I don't know that that is going to be an option because it's glued in there like cement. I suppose I could saw through it somehow if it came to that with serrated blade of some sort.
When I first got it, it made no sound. There was a wire in the middle chamber that had broken midway along it's length. I exposed clean wire and soldered them back together, and then the microphone picked up noise, but it sounds like a broken speaker where only the tweeter works kinda. No bass and kinda like a talkbox. It doesn't sound distorted. The signal is very very low, much lower than a 57 normally is.
Any ideas on what the deal is with this 4th wire? How to go about getting access to the joints on the transformer.
I was hoping that maybe someone has had some experience repairing shure SM57s. I bought a broken one off ebay as a kind of project. It's proving to be a little more difficult than I thought it would be.
I put up what I think are the best pictures I can get, tried to get a variety of angles. Really, where I am stuck now is that there seem to be 4 wires coming out down by the XLR pins, only 3 of which are attached to the XLR connectors (properly) and then there is 1 wire just hangin out with a loose end. I don't think it's supposed to be attached to the 4th XLR tab because it has no signs of solder or of a wire having broken off of it. I can't see up the bottom of the microphone well enough to see what's going on on the bottom side of the transformer. I can sorta see the top of the transformer, but I can't really see any of the joints of the wires going in and out of the transformer. I'd like to remove it and get a look at everything disassembled, but I don't know that that is going to be an option because it's glued in there like cement. I suppose I could saw through it somehow if it came to that with serrated blade of some sort.
When I first got it, it made no sound. There was a wire in the middle chamber that had broken midway along it's length. I exposed clean wire and soldered them back together, and then the microphone picked up noise, but it sounds like a broken speaker where only the tweeter works kinda. No bass and kinda like a talkbox. It doesn't sound distorted. The signal is very very low, much lower than a 57 normally is.
Any ideas on what the deal is with this 4th wire? How to go about getting access to the joints on the transformer.
Attachments
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Can't really see what's goin on down there 2.webp -
Resoldered Yellow to connector.webp -
Can't see down there, much less stick a solder iron.webp -
Wire obviously did not come from 4th XLR connector.webp -
Soldered broken wire together.webp -
Bar holding transformer cemented w glue.webp -
XLR joints good, but is 1 extra loose wire.webp -
Can't really see what's goin on down there.webp
