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Creating schematic for the nanao MS2930

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Franck 78

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Hello,

The goal is to do it from photos and a real pcb.

Photos because I need a little help to build an initial component list.
I already have the script using this future partlist to create a KiCad skeleton schematic.

(switched to some fund me support)

Thank you
 
Last edited:
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90% done. At least every component in the spreadsheet is in place. I don't think I forgot some.
Logic of the design is also OK for me , no strange things (or missing links).

what is left to do
-caps values
-zener voltage
A lot of them can be guessed from ms2931 MS9, ...

schema-08.png
 
Nice work so far! Not sure if this will help you or not, but I uploaded some Hi Res photos of the 2930 while I was working on it a while back:
DelsArcade

Post in thread 'MS2930 chassis extensive repair - any high res photos?'

Just worked on giving mine an overhaul recently and put it back in. :-) However, I plan to take it out the monitor again so that I can gain access to my speakers, which need to be rebuilt. I can take some high-res pics when it's out.

In the meantime, I'm going to paste below what I have. I took some to document were the plugs go before taking it apart. (Ignore the black goo pics, I ended up cleaning that up in the overhaul).

Del
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Del
 
Hello,
@DelsArcade , I did not know about the PCB-D. It is a little more populated than what is in ms2931 service manual.

Does anybody have 2 pictures of this pcb ?
 
Hi @Franck 78
Do these photos help at all ? I have a problem ms2930 I’m dealing with at the moment so this schematic would be very helpful to many I’m sure . I have tried to take a few pictures from slight angles so you can read the text on the p sub board . Let me know if you want any pictures of the chassis itself .
Cheers
 

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@Franck 78 wow you drew that up quick!
Happy to try take some clearer pictures for you if it helps ? Do you want me to take any measurements on R151 and R159 with my multimetre for you just to be sure?
Many Thanks
 
Great job @Franck 78 It's very much needed for the community this and from other monitors.

Keep us updated please.

About the capacitors, be careful with the values and the tolerance specially. Sometimes that tolerance can create issues if you don't choose the right one.
 
Coffee Sent!
Franck has been nice enough to show me a beta test copy of the schematic, its very detailed and easy to follow.
If anyone else is trying to diagnose / fault find their way through a Nanao MS2930 chassis (Like myself) , this man needs all the extra caffiene he can get to complete the task ! :)
@Franck 78 will send through those resistor measurements soon to you.
Cheers.
 
Sent you some coffee money! Hopefully it helps me bring my MS-2930 back to life. Keep up the great work — really appreciate what you’re doing!
 
Great stuff, coffee sent. Thanks for sharing your expertise and fruits of your labor with the community.
 
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