Protected Mode for Electronics

[radiooff]

Hey all,

I got moOde 7.0.1 up and running over the weekend. And I'd finally had the time hook up my USB DAC to the moOde Pi. Well, I went to power up my Topping D50S and the LCD said "Protect". I thought that ain't good but I could not figure out what had happened.

Well, the low-noise DC power supply I bought was 12V not 5V. Oops. I contacted Topping and they said hook it up to USB and see. I got the reply today at work. My replacement 5V power supply just arrived at home. I was hoping the Topping reply would have been a bit more in depth. Like say, "Oh yes, there's an over-voltage circuit that cuts power in these cases."

So, in general, do electronics that can display at protection status usually has a feature to prevent damage. Or could it just be, "Hey, you're f'ed." I've googled to see if this unit has such protection. I can find protections like this on other DACs, but nothing mentioned specifically on the D50S. I am wondering if I should return the unit or keep it if it does work?

What say you?

Wow,  really?

My first reaction is somebody wanted to sell you another DAC after you blow up this one.   Then I read a little closer and realized they weren't telling you to plug it into 12v and see what happens,  it was plug in correct voltage and see if it's still alive.

If it's still alive on 5v (USB power) and operates normally...    probably, maybe, you dodged a bullet?  Unless this is a pricey unit, its more circuit and programming work to protect and have it display something on the screen,  and I'd not expect them to go to the trouble.  OTOH,  with an external connector,  and a total lack of standardization of black boxes that plug in the wall.... maybe they thought it a good idea to add such.

If you did overvoltage it that much,  and there's no protection,  I'd not feel comfortable with it's long term lifespan.  See if you can get your OVP question answered,  and if it does protect itself... no worries from there.

When I contacted Topping service they said to just plug it to a correct power supply (DC outlet or USB). If it did not work they told me to contact them back.

The D50S was only $250.00, but that's a chunk of money that I don't like to normally part with. So, it works. Also the power supplies I bought, both the wrong one (12V) and the correct one (5V) cost $50.00 each. They are quality power units.

Personally, I thought if the went to all the trouble to program in a "Protect" there would probably be some sort of protection. RCA out works. USB in works. I have not tested BT or optical yet. But I sounds really nice.

The only I had was it took me a while to figure out that the Audio DSD output should not have been Native DSD (Default) but DSD over PCM (DoP).