Prompt where to begin recovery duetwifi and PanelDue

juri79

Hello!
Need help to restore the board.
Instead of 5V filed 12v

Not working panel due 7 (when connecting to another panel due 7) - works)
Not working pin ps on
the rest of the board is working.

Prompt where to begin recovery

droftarts

@juri79 Please post a good, high resolution picture of your board. I'd have thought that the 5V regulator would be burned. Does it work without USB power connected?

Ian

A Former User

which revision of the board?

probably TR7 you need to look at.

also see https://github.com/T3P3/Duet/tree/master/Duet2/Duet2v1.04 for schematics

edit: something doesn't add up, which pin did you connect 12v? Pin 1 on that header is 5v_in and unless you have fitted the ext_5v jumper no harm should come(?); if you had the jumper fitted then it seems odd that everything but PS_ON pin works.

juri79

@droftarts
Yes. works without connecting to the usb

A Former User

@juri79 said in Prompt where to begin recovery duetwifi and PanelDue:

Yes. works without connecting to the usb

when with a bit of luck it is only the mosfet (TR7) for the PS_ON pin you need to replace. picture would still be helpfull.
(although TR7 will not have any effect on a faulty PanelDue)

juri79

@bearer
ver 1.03
jumper ext_5v I am not set
No other voltage was applied to the Board.

juri79

@bearer said in Prompt where to begin recovery duetwifi and PanelDue:

@juri79 said in Prompt where to begin recovery duetwifi and PanelDue:

Yes. works without connecting to the usb

when with a bit of luck it is only the mosfet (TR7) for the PS_ON pin you need to replace. picture would still be helpfull.
(although TR7 will not have any effect on a faulty PanelDue)
Thank you

A Former User

@juri79 said in Prompt where to begin recovery duetwifi and PanelDue:

jumper ext_5v I am not set

that explains why the rest of the board is okay, there is no connection from the indicated pin and the rest of the board with out ext_5v jumper.

it doesn't explain why PS_ON pin died; maybe you put 12v on the PS_ON pin? (the middle of the three)

regardless of where you put 12v on that connector it doesn't offer a clear explanation as to why the paneldue failed, if you can include a picture of the wiring (power off!!) it may help diagnose.

juri79

@bearer
I have already removed the excess

I'll draw it now

juri79

@bearer

A Former User

I cannot see how connecting 12v to that pin with the ext_5v jumper removed should cause any problem at all, its effectively disconnected.

could there be some loose strands or something on the connections causing a short?

juri79

@bearer
Maybe due to the fact that I pressed the power button?

A Former User

a short between PS_ON and ground would explain why that mosfet may have failed. but it has no connection to a failed paneldue so there is something missing from the equation.

juri79

@bearer
This of course will not help, but when turned on, the entire Board (LEDs) and screen flashed

A Former User

Unless well lit and focused pictures of the boards have any clues I don't think I have more to add I'm affraid.

Replacing TR7 (tiny mosfed between the Vin terminal and the always on fan) will likely fix the PS_ON problem, but no idea why or what caused the paneldue issue.

juri79

@bearer
Thank you again.
if restore - write