Accidently I took wrong power supply... Analog Discovery Studio refuses to turn On.

[Ody101]

I was working on a project analyzing PWM signals. And I had a 24V power supply near me from the soldering gun. They were very similar and fitted perfectly. I took it and inserted it in the studio and it worked for a little while, then I noticed this and quickly unplugged it but it was too late. Later, when I tried connecting its power supply, rated 15V, it did not turn on. I don't smell anything burning but... I feel like I killed :( Do you have any fuses or anything like that for the power supply? Or that is the end.

Edited May 12 by Ody101
grammar error

[attila]

Hi @Ody101

The following ICs are first the supply path:
Q1 NTLUS3A18PZTCG
IC20 ADP7118ACPZN-R7
IC12 MP8756GD

 

[attila]

Hi @Ody101

I don't think it's that important. Turns on some FETs to discharge internal and user rails. Probably for the safety of later ones.

[JColvin]

Hi @Ody101,

I have moved your thread to a section of the Forum where the engineer more familiar with the internals of the Analog Discovery Studio hardware will be able to see your post, since I am uncertain what all protection measures are in place, though I don't believe there is a fuse that can be easily replaced.

I know it's too late at the moment now for you, but for what it's worth, I have made a point of putting labeled sticky notes on my external power supplies both so that I can quickly identify between the myriad of voltage ranges without having to squint at the small print on the side of the brick.

Thanks,
JColvin

[Ody101]

Hello JColvin and Attila, 
 

The information that you provided was precious. I was able to find the faulty components. Components "Q1 NTLUS3A18PZTCG" and "IC12 MP8756GD" Failed. The analog studio seemed to work again after component "IC12 MP8756GD" was removed and replaced with a bench Power Supply. But the power switch does not work, and component "Q1 NTLUS3A18PZTCG" also shows short. I would like to know, how crucial this component is and what is "discharge". I was trying to find the replacement part but it is no longer sold.

Thank You

Ody101.