Question about Sennheiser 604B Professional Microphone

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E604 how do i get inside to check the wires

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  • Anonymous Mar 31, 2008

    Same problem here, the mic went dead and I want to pop er open to have a look...

  • Anonymous Feb 13, 2009

    All I managed to do so far is remove the front grille. Looks like one could push out the entire innards somehow

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Ok all you have to do is remove the front grille. Then, with a small screwdriver carefully go around the inside of the casing to remove the glue and the you can push the innards out!

Posted on Feb 13, 2009

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I have the same problem. I have had a go at getting inside but it definately looks completely sealed. I know it is still under warranty but I recon it is just a dry solder - I am considering busting the outer case to have a look...

Posted on May 29, 2008

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1 Answer

Disconet inside wires


The correct term is "solder" it (or them) back. This is basic stuff and if you don't know how to solder - and perhaps don't even have a soldering iron - that can't be explained her in a brief answer. Get Googling on "soldering iron" and "solder" if your first language is English, ot translate first if it isn't. Finally, if you do attempt a repair, go very carefully with the tiny wires inside a mic body..

May 08, 2015 | Audio Players & Recorders

1 Answer

PR20 mic has three colored cables inside.. red black and yellow. the yellow has lost its solder. despite this it still works. what does the yellow cable do, and which prong inside should i re-solder it to?


Two of the wires are signal (1 is + the other is -). The third wire is ground. The two signal wires will go to either side of the mic diaphragm. (looks like a miniature speaker). The ground wire will usually go to the mic body. The colors could be proprietary to Heil so I'm not sure what they are based solely on color. If it's an "active" mic with an internal circuit board then there is no telling.

Typically the red and yellow would be the signal wires, the black would be the ground, however, as previously stated, this can not be guaranteed if Heil uses a proprietary setup.

Aug 23, 2011 | Heil Sound PR20 Professional Microphone

1 Answer

Have a beta 57a it wont work ? nothing


I'm assuming that you have tried the obvious stuff like using a different cable and a different amplifier?
The Shure beta 57a is a very robust and reliable dynamic microphone and there is very little to go wrong with it apart from
  1. A wire broken off inside
  2. A broken capsule - can be caused by dropping it
You can inspect for broken wires by very gently unscrewing the microphone head and peering inside - however the wiring is quite short so be careful not to pull any wires off in the process.
A broken capsule can be replaced - contact your local dealer for parts.

Feb 09, 2011 | Shure SM87 Professional Microphone

1 Answer

No sound from my sm58 mic


The SM58 is a very rugged and reliable microphone and there are not many things to go wrong with it.
Assuming that you have tried using a different cable / amplifier to issolat ethe problem to teh microphone itself the most likely things are.
  1. A wire has come off inside - gently unscrew the top of the mic - lift it off carefully lift because the wires inside are quite short.
  2. A broken capsule - this usually results from dropping the mic on hard surfaces. Replacement capsules can be bought quite cheaply.Just tak careful note of the wiring order before disconnecting the old one.

Feb 09, 2011 | Shure SM58 Professional Microphone

1 Answer

I PUT IN NEW BATTRYS BUT NO GREEN LIGHT ON MIC . IT WAS CUTTING IN AND OUT BEFORE THIS HAPPENED. ITS LIKE THE MIC JUST DIED. CAN YOU HELP?


most likely a loose connection inside suggest,
check battery is held tight in place, if not then it might be possible to very gently bend the battery terminals just enough to help the connection.
if not battery connections then its inside the mic could be the power or the capsule wiring, need a tech or the dealer to take a look

hope this helps
thanks for using FixYa

Aug 15, 2010 | AKG HT 40 Professional Microphone

1 Answer

Weaker sound,not a fake.


Check the wiring at the xlr first, maybe 1 leg of the balanced output has come off or maybe a bad solder joint inside.

If its weak and thin then it sound like this might help.

Hope this helps
Thanks for using FixYa


Aug 04, 2010 | Shure Beta 87A Professional Microphone

1 Answer

I have ac201 stero pc headset with microphone,windows vista ultimate i count get them to work can you help me


take a 1.5 volt batery cell... attach one side of cell it to the end of headphone pin... attach other end of cell with a wire and tap that wire on the headphone pin ...u shud get a clicking sound in ur headphones.... this is to check if ur headphones work...

if they work... apply a drop of mobile oil on the headphone pin and insert it in the jack and spin it so the oil reaches the inside of jack then let it dry for a while....

attach the headphone to jack again and play the audio ...if this doesnt give u any output.... check ur sound driver software

Nov 22, 2009 | Cyber Acoustics Audio Players & Recorders

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