12V on the 5V rail

A Former User

has the same manufacturer part number as on the schematic at least, so thats about as sure as I can get.

"Tillverkarens artikelnummer TC2117-3.3VDBTR"

(the key to decoding the part numbers are usually towards the end of the datasheets, helps decode the various letters and numbers)

Haggan90

@bearer Hi!

I have now changed the U2 and I can connect to the board via USB
It seems like maybe the WiFi module is broken, but is there any way I can check that over YAT?

A Former User

just follow the getting started guide to set up wifi again, if it responds to M552 and connects you're good.

Haggan90

@bearer ok!
The blue LED does not light up on start, is that a bad thing?

Haggan90

@Haggan90
Ok, it seems like I can't get the Wifi module into idle mode.
Also, I do belive it get's a bit warm, not hot but warm.

M115
FIRMWARE_NAME: RepRapFirmware for Duet 2 WiFi/Ethernet FIRMWARE_VERSION: 2.05.1 ELECTRONICS: Duet WiFi 1.02 or later FIRMWARE_DATE: 2020-02-09b1<LF>ok<LF>
M552 S-1
WiFi module stopped<LF>ok<LF>
M552 
WiFi module is disabled<LF>ok<LF>
M552 S0
ok<LF>
M552
WiFi module is being started<LF>ok<LF>
M552 S0
ok<LF>
M552 S0
ok<LF>
M552
WiFi module is being started<LF>ok<LF>
M587
M587: Failed to retrieve network list<LF>ok<LF>

Phaedrux

@Haggan90 try deleting all saved wifi networks with M588 S"*" (That is, using an asterix for the network name), then re-adding it with M587. For example, M587 S"networkname" P"password".

Haggan90

@Phaedrux Hi, I get this:

M588 S"*"
M588: Failed to reset the WiFi module to factory settings<LF>ok<LF>

Haggan90

@Phaedrux The SD-Card seems to be fine.
Do I need a hot air desoldering station to change the Wifi Module? And, what would I need to do after I've changed it?
This is what I get when sending M21.

M21
SDHC card mounted in slot 0, capacity 3.98Gb<LF>ok<LF>

A Former User

@Haggan90 said in 12V on the 5V rail:

Do I need a hot air desoldering station to change the Wifi Module?

A good preheating and some quickchip or similar 138C-ish melting point solder might to the trick; but most likely "yes".

edit: oh, and after all you need to do is run M997 S1, presuming the wifi firmware file is in the /sys folder on the SD card.

Haggan90

@bearer Thank you! I will see what I come up with to desolder it
Is there any special version of the ESP-12S Wifi Module I need?

A Former User

@Haggan90 said in 12V on the 5V rail:

ESP-12S

Thats about as specific as you can get, but no, any ESP-12 ought work, the 12S has all the right certifications on it which is important for Duet3d selling them, not so much for you. I.e. you could use a 12E or F if easier to obtain (or pretty much any other ESP with the same footprint)

(the ESP-07S is an official option if you want external antenna, just make sure to never run it without antenna attached to avoid damage to the rf tx)

Haggan90

@bearer Thanks!
I just ordered a ESP-07S as I have a bunch of these antennas laying around, hoping for a bit better range on the WiFi then

Haggan90

Manage to desolder it using a regular soldering iron, now I just need the new chip!

Haggan90

@bearer Woho! It's working again! Thanks for all the help!

A Former User

Well done! I'm sure the planet prefers a bit of repairing to just landfills:)

Haggan90

@bearer

Unfortunalty is seems like the Duex2 took a hit as well, as I can't get the steppers working there.
Nothing get's hot on the board.
Any idea what could have broke on the Duex2?

dc42

Does M115 report that there is a DueX connected? If not then the SX1509B chip has probably failed.

Haggan90

@dc42

M115
FIRMWARE_NAME: RepRapFirmware for Duet 2 WiFi/Ethernet FIRMWARE_VERSION: 2.05.1 ELECTRONICS: Duet WiFi 1.02 or later FIRMWARE_DATE: 2020-02-09b1

So, is that SX1509B hard to change?
And where can I find it on the DUEX2?

A Former User

@Haggan90 said in 12V on the 5V rail:

So, is that SX1509B hard to change?

without hotair or low melt solder it'll be tricky - but if you got the wifi module off I guess you might pull it off - however its probably easier to pull toff he relatively small pads of the qnf compared to the wifi.

Small square chip, U8

dc42

I have replaced the SX1509B on several DueX boards. A hot air rework station is required. I found that after removing the chip, it helps to use solder wick to remove excess solder from the central pad. Otherwise it may tend to float on that solder, making it harder to get good connections on the surrounding pads.