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R/E/P => Klaus Heyne's Mic Lab => Topic started by: RuudNL on August 02, 2019, 11:12:38 AM

Title: Repair Broken-off Nipples on Low Cut, Pad Switches, Neumann U87
Post by: RuudNL on August 02, 2019, 11:12:38 AM
I have seen many U87 microphones with broken pins of the low cut/pad switches.
Is there a good way to repair those switch pins?
I know that Neumann sells the complete switch/capsule mounting assembly, for a pretty high price.
(I don't think $471 is a realistic price to replace a single broken switch pin...)
I found that Soundlock Engineering is selling replacement switch sliders that are 3-D printed.
Any suggestion is highly appreciated!
Title: Re: Repair Low cut/pad switch of a Neumann U87
Post by: klaus on August 02, 2019, 06:21:09 PM
I buy 1mm plastic rods of the color, cut to size (any type of plastic will do), bevel the tip to the exact radius of the original, drill out the broken-off switch section, then insert and glue the new rod into place.

Indistinguishable from the original, when done right.

Title: Re: Repair Broken-off Nipples on Low Cut, Pad Switches, Neumann U87
Post by: houser on January 19, 2022, 11:59:51 AM
 I am also attempting to repair the -10db switch on an U87AI 1998.

Is there any chance someone here could sell me or point to a few centimetres of the dark yellow 1mm plastic rod
that is required to repair this? I have spent hours looking for this and would truly appreciate it!

If not could someone suggest a link on the internet by any chance please?
Would truly appreciate it! Many thanks
Title: Re: Repair Broken-off Nipples on Low Cut, Pad Switches, Neumann U87
Post by: klaus on January 19, 2022, 02:25:24 PM
Your model year uses stark-white plastic nipples.
Here is a link: https://www.ebay.com/itm/401413037539
Title: Re: Repair Broken-off Nipples on Low Cut, Pad Switches, Neumann U87
Post by: houser on January 19, 2022, 07:05:54 PM
Thank you very much for your kind reply. Will check!