Question about Sennheiser MD421-II Professional Microphone

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My sennheiser 421 just stopping working - Sennheiser MD421-II Professional Microphone

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Posted on Jan 02, 2017

  • 87 Answers

SOURCE: need to fix loose wire inside 421 sennheiser

Well, it looks like an SKM 100/g2 casing so if that is true, then unscrew the bottom part till you have access to the batteries and there are three star screws you'll need to take out right between the battery compartment and the bottom with the LCD screen. The bottom cover slides down and off. If you need the cartridge out then you unscrew the top of the mic where the actual pickup is and pull the core out through the top. That should be close, but might vary a little bit.

Posted on Oct 28, 2009

  • 211 Answers

SOURCE: How do you take apart a sennheiser 421?

Hi,

First you must loosin the connector.
There's a little shield with the serialnumber you can slide away.
Underneath that you will find the screw to loosin the connector/filter.
If you look inside you will find a bolt, unscrew that one and the element will seperate from the housing.
Thats what I remember after 25 years.

Good luck,
Gerard

Posted on Feb 02, 2010

  • 211 Answers

SOURCE: how does one take a Sennheiser MD 421 apart?

Hi,

At the connctorside there's a small metal plate with a serial number.
You have to bench it a little, underneath there's a screw.
Unscrew it and you can take the connector out.
What I remember after 25 years is that there is a screw inside which is loosing the grill and element.


I've written it before with succes.
http://www.fixya.com/support/t3134138-apart_sennheiser_421


Regards,
Gerard

Posted on May 17, 2010

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My MD 421 suddenly has no high end. Sounds muffled and distorts when I yell into it.


Check the cable. It maybe damaged. Check your phantom power. If your going to yell into the mic...Turn the input gain down to avoid initial distortion. Not sure of your recording setup, but everything in the chain input to output is key.
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You will have to open them up and see where the wire is interrupted

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Is there a pad on the md 421-u


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Dec 15, 2010 | Sennheiser MD421-II Professional...

1 Answer

How does one take a Sennheiser MD 421 apart?


Hi,

At the connctorside there's a small metal plate with a serial number.
You have to bench it a little, underneath there's a screw.
Unscrew it and you can take the connector out.
What I remember after 25 years is that there is a screw inside which is loosing the grill and element.


I've written it before with succes.
http://www.fixya.com/support/t3134138-apart_sennheiser_421


Regards,
Gerard

May 17, 2010 | Sennheiser MD421-II Professional...

1 Answer

I have to shake it to get a signal. Seems like a bad connection. Used very little in a home recording studio.


Hi,

It could be a dirty switch, you can find this switch at the back of the 421. You can rotate it several times to clean the contacts a little bit. Otherwise you have to take the 421 apart.

Good luck,
Gerard

Dec 31, 2009 | Sennheiser MD421-II Professional...

2 Answers

Brand new Sennheiser RS140 headphones stopped working


Mine is a bit older (2yrs), but I have exactly the same problem. Absolutely no sound from the headphones (no beeps). I also tried new batteries, but still nothing.

If you have a solution, let me know!

Tanks

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1 Answer

Need to fix loose wire inside 421 sennheiser how do you open it up?


Well, it looks like an SKM 100/g2 casing so if that is true, then unscrew the bottom part till you have access to the batteries and there are three star screws you'll need to take out right between the battery compartment and the bottom with the LCD screen. The bottom cover slides down and off. If you need the cartridge out then you unscrew the top of the mic where the actual pickup is and pull the core out through the top. That should be close, but might vary a little bit.

Oct 27, 2009 | Sennheiser Flashmic Digital Recording Mic...

1 Answer

How do you take apart a sennheiser 421?


Hi,

First you must loosin the connector.
There's a little shield with the serialnumber you can slide away.
Underneath that you will find the screw to loosin the connector/filter.
If you look inside you will find a bolt, unscrew that one and the element will seperate from the housing.
Thats what I remember after 25 years.

Good luck,
Gerard

Oct 08, 2009 | Sennheiser Flashmic Digital Recording Mic...

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