Creating schematic for the nanao MS2930

[Franck 78]

Today was Zener measuring. That what I was expecting. But I had to confirm when possible with the marking. And those diodes are really small for my fingers

Next in line are smd caps.

Still need coffee if you want this released quickly.
BTW, I send a copy (pdf) to anyone who buy me coffee.

 

[frsj8112]

Coffee is on it’s way!

 

[Franck 78]

so, some news. I took time to measure remaining caps. Some strange values. BOM simplification was an option at that time.

I also started to fix the board I have. If it was quick to determine Q501 dead it was also obvious Q955 would suffer. And dead it was. Probably 'guessable' from ms2931 schematic Q511-Q952
Now let's see how I will do with the board starting like this (no capkit yet) and the schematic :

 

[PapaBergsy]

Wow awesome work, well done! Will send through another couple coffees shortly! You are giving me hope that with the help of your schematics and parts listing, i might actually be able to (with a bit of luck) revive once of my dead ms2930s !

 

[Franck 78]

I will publish the partlist soon. Working on it.

 

[PapaBergsy]

Looking forward to it, Another Coffee Sent!
Many Thanks

 

[Franck 78]

After a capkit (partial) and B+ adjusting, bingo , a working ms2930.
With this working, I was able to understand some circuitry that
was obscure.

 

[PASTBLASTER]

Coffee Sent! This is awesome work!

 

[snake_eyes_ex]

This is very cool. Great work.

 

[opt2not]

Great work, I've spread the word on my socials to help with the efforts. More coffee for you! (not related, my wife bought me a proper espresso machine, I've been enjoying "good" coffee lately... not that starbucks crap).

 

[Franck 78]

Great work, I've spread the word on my socials to help with the efforts. More coffee for you! (not related, my wife bought me a proper espresso machine, I've been enjoying "good" coffee lately... not that starbucks crap).

I salvage 2 'krups EA8200' and am enjoying real coffees with them. Very fragile machines full a problems. First one 7 or 10 years ago!

 

[opt2not]

https://twitter.com/gillaxian/status/1986578101938364588

 

[Ziggy Cheetos Dust]

Coffee bought. Thanks for your dedication.

 

[Franck 78]

Thank you to all off you for the support. The thing is nearly ok, just waiting feedback from supporters who received a copy.
If an early supporter needs an updated copy, tell me.

 

[Ziggy Cheetos Dust]

G

Thank you to all off you for the support. The thing is nearly ok, just waiting feedback from supporters who received a copy.
If an early supporter needs an updated copy, tell me.

It’s a great idea to have the CRO image examples. I don’t know how to use one but those images make me think about getting a cheap one for testing.

 

[Franck 78]

Currently watching Dave Jones teardown latest cheap Rigol scope
There is tons of analog very cheap scope everywhere, even Australia
https://www.eevblog.com/2025/11/03/eevblog-1717-rigols-insane-new-999-350mhz-oscilloscope-teardown/
https://www.youtube.com/watch?v=E3G9G79YErg

 

[Franck 78]

KiCad files published. Only for some users of KiCad.
No PDF yet
I hope to get some fixes or additional information before general release.
https://github.com/Franck78/NANAO-MS2930

 

[Darksoft]

Awesome job!

 

[Franck 78]

Hello,
I did not receive any feedback with the KiCad files only. I just added the PDF.
Enjoy.

 

[twon]

Thank you Franck, appreciate all the hard work.