Photo of mainboard ...
 

Photo of mainboard needed urgently!  

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Marcin
(@palindrom)
Trusted Member

Hi,
it look like I've teared off resistor or capacitor from mainboard.
Can someone please take a close-up photo of mainboard between ATSAM3 microcontroller and extruder1 hole? Components between C17 and R19.

I'd really appreciate it.

Quote
Posted : 3rd February 2019 5:34 pm
Marcin
(@palindrom)
Trusted Member

Measurement on R14 and R19 appreciated as well ;)

ReplyQuote
Posted : 3rd February 2019 6:43 pm
Marcin
(@palindrom)
Trusted Member

Finally found it.
I'll take a guess on resistor value.
What can go wrong? ;)

1549290673-IMG_20180312_171127.jpg
ReplyQuote
Posted : 4th February 2019 2:31 pm
Steffen-Berlin
(@steffen-berlin)
Active Member

Hi!

Sorry, I can not help here.. but a question from a electronic technician...

I did not see the resistor or capacitor positions that you described in this photo. And in the middle, should there not be a BGA component / controller at this position?

Greetings!

ReplyQuote
Posted : 4th February 2019 8:10 pm
Marcin
(@palindrom)
Trusted Member

Yes, I took that photo a year ago, when I replaced broken MCU.
Now I really need to know the values on those 3 resistors marked on attached picture, as 1k for all of them did not work :(
I get ambient temp of -4, nozzle 'cold'.

1549318220-Przechwytywanie.png
This post was modified 5 months ago by Marcin
ReplyQuote
Posted : 4th February 2019 10:09 pm
BHudson
(@bhudson)
USA Robox Support Moderator

What version of the mainboard are you working on? There are at least four that I am aware of in the wild.

ReplyQuote
Posted : 4th February 2019 10:42 pm
Mike
 Mike
(@17bt)
Prominent Member

@palindrom

The top single resistor "R19" in your latest close up picture is around 689Ω and the lower two are both the same at 600Ω each.

I was using a "Mickey Mouse" multimeter, but these values should help you. :)

Good luck

Mike

 

This post was modified 4 months ago by Mike
ReplyQuote
Posted : 6th February 2019 8:41 pm
Marcin liked
Marcin
(@palindrom)
Trusted Member

THANK YOU! :)
Measured with board connected / in printer or with board removed?

ReplyQuote
Posted : 8th February 2019 9:48 am
Mike
 Mike
(@17bt)
Prominent Member

@palindrom

Board was inside "dead" Robox, being used as parts now, with extruder removed by another, un-powered, with no USB cable or power cable fitted, and so "in situ" measurements. Motherboard or logic board was intact though, so nothing unconnected as such. :)

Obviously there might be other components in parallel with these, as I  haven't seen any schematics for the board anywhere, so take readings with "a pinch of salt", but I'm guessing 689 is probably 681Ω with tolerances, & the 600Ω might be 590 or 604Ω using SMD components.

Mike

PS I believe you might have a parcel on the way too, so you'll be able to measure those. ;)

Mike

 

This post was modified 4 months ago by Mike
ReplyQuote
Posted : 8th February 2019 3:01 pm
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