Faderport SMD component burned, need to identify it

[guze]

Hello,
I connected a PS that was getting from 12 to 20vdc instead of the suposed 9v. It burnt the D25 SMD component, everything else looks ok. I don't know what this is, can anyone help me ?
Thanks


i know the foto it's not that good.

 

[jwhmca]

Probably just the reverse polarity protection diode... just take it out and power up the circuit. *** MAKE absolute sure you have the polarity right!!!!***

If everything works... there are a lot of diodes that would work just fine for the job.

 

[guze]

That's right after the dc connector. This is only for the motorized fader, everything else works from the usb power(and is working).

Thanks

 

[jwhmca]

Can you draw out a portion of the schematic? Focusing of course where and how the diode connects.

 

[kdawg]

Resurrecting this ancient thread - does anyone know the diode part #? Exactly the same thing happened to me. It comes after two inductors from the pos DC jack and two more to ground:

pos DC  >------- L1 --+-- |>--+--L2------< minus DC
                                |  D25  |
                                |          |
                                To Motor

12v zener maybe?

 

[ltn.koerschgen]

Hi, did any one of you fixed the problem?
Best,
K.

 

[dysondex]

Hey Guze,

Don't know if you have kept your fader pro or not so this post might be useless.

D25 on mine which is a 2006 rev 3 board is below. It has a reverse C, then two equals stacked vertically ( like this but sideways ==) and then says 028. Below all of that is Z H W. I couldn't really find anything useful with that but you might know what it all means better than me.

I also need help identifying what D1 is. It's in the opposite corner of the board. Just above the right side of the white 6 pin connector. It starts with A7 but the rest of it is blown out on mine. It's a double diode and there are a few that start with A7 I just need to know the rest. Are you able to help me out?

Thanks!

 

[teeramusic]

I haven't got a magnifying glass or a camera and these things are awfully small, but  D1 looks like A7 and then the number 4 turned 90 degrees counter clockwise in an even smaller font. I hope that's helpful.

Has any of you tried to change the encoder on it? So garbage.  I just bought it today and I want to replace it. Any recommendations on reliable encoders? It's a mechanical incremental type.

 

[guze]

thanks for the pics, i'll take some as soon as i can, it's not with me and still not fixed