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Byron 5th October 2019 08:29 PM

NPNG - need repair help
Hi all,

I have an NPNG DMP-2NW that needs a (hopefully minor) repair.

The problem is no signal on channel 1. No action on the meters or anything.

I do get a quick spike on the meters when I toggle the Hipass switch, not no audio.

If anyone has schematics, or contact info for someone who does, it would be appreciated.


Byron 11th October 2019 03:43 PM


NoEgo 26th November 2019 12:18 AM

Looking for the schematic myself. I think Karl is going through some stuff I read. Feel bad for him and I am not in any way offended. We don't know the situation. I have a stuck meter and he said back when that he would send me the schematic but I didn't hear from him after that. Hope things are okay his way.

KIDBILL 13th October 2020 10:48 PM

anyone got schematic for npng preamp?

Berndalen 19th January 2021 03:58 AM

Sadly NPNG┬┤s Karl Diehl passed away last year.


I'm about to buy a used NPNG 4NW. The most wonderful preamp on earth. To be able to repair the unit in the future, the schematics would be very helpful.

If someone have it. Please PM me!