Faulty Toolboard 1LC v1.1?

[SilviuZ]

Re: Faulty Toolboard 1LC V1.1?
Hi.
I've updated my printer to RepRapFirmware for Duet 3 MB6HC version 3.4.0beta6
everything worked perfect up to one point when I didn't have any readings from extruder thermistor and the BlTouch didn't deploy anymore. I used my Flir camera and i noticed that there is a 100degrees Celsius hot spot on the tool board.
there is anything that I can do?

image url)

11/21/2021, 5:31:36 PM M122
=== Diagnostics ===
RepRapFirmware for Duet 3 MB6HC version 3.4.0beta6 (2021-11-06 11:38:57) running on Duet 3 MB6HC v0.6 or 1.0 (standalone mode)
Board ID: 08DJM-956L2-G43S8-6JTD6-3SS6L-KA16H
Used output buffers: 6 of 40 (20 max)
=== RTOS ===
Static ram: 151136
Dynamic ram: 96484 of which 0 recycled
Never used RAM 103052, free system stack 202 words
Tasks: NETWORK(ready,27.3%,235) ETHERNET(notifyWait,0.1%,176) HEAT(notifyWait,0.0%,326) Move(notifyWait,0.0%,352) CanReceiv(notifyWait,0.0%,903) CanSender(notifyWait,0.0%,373) CanClock(delaying,0.0%,334) TMC(notifyWait,7.3%,92) MAIN(running,65.1%,1115) IDLE(ready,0.0%,30), total 100.0%
Owned mutexes:
=== Platform ===
Last reset 00:03:53 ago, cause: power up
Last software reset at 2021-11-21 16:21, reason: User, GCodes spinning, available RAM 103264, slot 2
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x00400000 BFAR 0x00000000 SP 0x00000000 Task MAIN Freestk 0 n/a
Error status: 0x00
Aux0 errors 0,0,0
Step timer max interval 128
MCU temperature: min 26.5, current 43.0, max 43.1
Supply voltage: min 29.3, current 29.3, max 29.4, under voltage events: 0, over voltage events: 0, power good: yes
12V rail voltage: min 11.9, current 12.1, max 12.7, under voltage events: 0
Heap OK, handles allocated/used 0/0, heap memory allocated/used/recyclable 0/0/0, gc cycles 0
Driver 0: pos 0, standstill, SG min 0, mspos 0, reads 65327, writes 14 timeouts 0
Driver 1: pos 0, standstill, SG min 0, mspos 0, reads 65327, writes 14 timeouts 0
Driver 2: pos 0, standstill, SG min 0, mspos 0, reads 65328, writes 14 timeouts 0
Driver 3: pos 0, standstill, SG min 0, mspos 8, reads 65331, writes 11 timeouts 0
Driver 4: pos 0, standstill, SG min 0, mspos 8, reads 65331, writes 11 timeouts 0
Driver 5: pos 0, standstill, SG min 0, mspos 8, reads 65331, writes 11 timeouts 0
Date/time: 2021-11-21 17:31:34
Slowest loop: 128.47ms; fastest: 0.05ms
=== Storage ===
Free file entries: 10
SD card 0 detected, interface speed: 25.0MBytes/sec
SD card longest read time 0.7ms, write time 0.0ms, max retries 0
=== Move ===
DMs created 125, segments created 0, maxWait 0ms, bed compensation in use: none, comp offset 0.000
=== MainDDARing ===
Scheduled moves 0, completed 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== AuxDDARing ===
Scheduled moves 0, completed 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== Heat ===
Bed heaters 0 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1, chamber heaters 2 -1 -1 -1, ordering errs 0
=== GCodes ===
Segments left: 0
Movement lock held by null
HTTP is idle in state(s) 0
Telnet is idle in state(s) 0
File is idle in state(s) 0
USB is idle in state(s) 0
Aux is idle in state(s) 0
Trigger is idle in state(s) 0
Queue is idle in state(s) 0
LCD is idle in state(s) 0
SBC is idle in state(s) 0
Daemon is idle in state(s) 0
Aux2 is idle in state(s) 0
Autopause is idle in state(s) 0
Code queue is empty
=== CAN ===
Messages queued 2118, received 30, lost 0, longest wait 2ms for reply type 6049, peak Tx sync delay 15213, free buffers 49 (min 48), ts 1170/10/0
Tx timeouts 0,0,1159,0,0,927 last cancelled message type 4514 dest 127
=== Network ===
Slowest loop: 6.60ms; fastest: 0.02ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions Telnet(0), 0 sessions
HTTP sessions: 1 of 8

• Ethernet -
  State: active
  Error counts: 0 0 1 0 0
  Socket states: 5 2 2 2 2 0 0 0

[T3P3Tony]

@silviuz thats the 5V voltage regulator. Please try with the BL touch unplugged. I suspect there is a short between 5V and ground.

[SilviuZ]

@t3p3tony
thank you for the reply
I unplugged everything and still same problem

[T3P3Tony]

@silviuz thanks for testing that. Had the board been in use for long before the fault occured?

[SilviuZ]

@t3p3tony I've used the board for around 500 hours of printing without any hardware change. It was perfect. And the printer was going up to 450mm/s.
It didn't had any possible short 5v/30v to the ground
the printer head is not conductive and I've used the plastic washers. Something weird happened.

[T3P3Tony]

@silviuz it looks like you have a second hotspot:

Its hard to tell because the FLIR overlay on the optical image is shifted down. it looks to me like this is actually the stepper motor driver chip and zooming in on that image:

looks like there is damage visible on the top of that IC.

How long did it print for after upgrading to 3.4b6?

[SilviuZ]

@t3p3tony ive printed a vase for 4 hours. Then i done some cleaning and weekly maintenance of the printer. I started the printer and tried to home all and the BlTouch extended the pin but no Z homing.
Flir one doesn't like close images and it's not possible to align the image correctly.
I noticed that spot on the driver and I didn't believe that could be damaged. My bad.
There is no way to save this board. Correct?

[T3P3Tony]

@silviuz I think its very likely that something caused the driver to get damaged in a way that is now shorting 5V to ground internal to the board.

[SilviuZ]

@t3p3tony thank you. I bought a replacement and nothing else was damaged.