ATX power on TEMP 2000



  • Ok, I think i messed up bad. Is there anyway I can fix my board. I set up a relay and it was working well. However i used a different phone charger for the USB that supplies the 5v. It was the Samsung fast change one. It says on there i can supply 9.0V 1.67A, or 5.0V 20A, the one I was using before supplies 5.3V at 2A. The 5.3V one worked fine, not looking i plugged it into the other one and was working on setting up my Z motor sync. When doing that the therm on the hot-end bummed into my paper clip holding down the glass and tore the wires out of the therm. The thing is i get 2000 on both bed and hot-end. The web shows fault on both heater 1 and heater 2. I removed the 5v power supply and used only my normal 24V powersuppy and removed the 5V jumper. It starts up with the same issue. 2000 and 2000.

    Error: Temperature reading fault on heater 0: sensor open circuit

    Error: A heater fault has occured on this particular heater.

    [[language]]
    === Diagnostics ===
    Used output buffers: 3 of 32 (9 max)
    === Platform ===
    RepRapFirmware for Duet WiFi version 1.20 running on Duet WiFi 1.0
    Board ID: 08DAM-999TL-MQ4S8-6JKD8-3SJ6J-15BZW
    Static ram used: 15448
    Dynamic ram used: 98984
    Recycled dynamic ram: 256
    Stack ram used: 1392 current, 4424 maximum
    Never used ram: 11960
    Last reset 00:28:05 ago, cause: power up
    Last software reset time unknown, reason: User, spinning module GCodes, available RAM 6928 bytes (slot 1)
    Software reset code 0x0003 HFSR 0x00000000, CFSR 0x00000000, ICSR 0x0441f000, BFAR 0xe000ed38, SP 0xffffffff
    Error status: 0
    Free file entries: 10
    SD card 0 detected, interface speed: 20.0MBytes/sec
    SD card longest block write time: 0.0ms
    MCU temperature: min 33.7, current 37.9, max 38.4
    Supply voltage: min 24.5, current 24.6, max 24.9, under voltage events: 0, over voltage events: 0
    Driver 0: standstill, SG min/max not available
    Driver 1: standstill, SG min/max not available
    Driver 2: standstill, SG min/max not available
    Driver 3: standstill, SG min/max not available
    Driver 4: standstill, SG min/max not available
    Date/time: 2018-01-01 22:12:37
    Cache data hit count 4294967295
    Slowest main loop (seconds): 0.014100; fastest: 0.000044
    === Move ===
    MaxReps: 0, StepErrors: 0, FreeDm: 240, MinFreeDm 240, MaxWait: 0ms, Underruns: 0, 0
    Scheduled moves: 0, completed moves: 0
    Bed compensation in use: none
    Bed probe heights: 0.000 0.000 0.000 0.000 0.000
    === Heat ===
    Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1
    Heater 0 is on, I-accum = 0.0
    Heater 1 is on, I-accum = 0.0
    === GCodes ===
    Segments left: 0
    Stack records: 1 allocated, 0 in use
    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
    serial is idle in state(s) 0
    aux is idle in state(s) 0
    daemon is idle in state(s) 0
    queue is idle in state(s) 0
    autopause is idle in state(s) 0
    Code queue is empty.
    Network state is running
    WiFi module is connected to access point 
    Failed messages: pending 0, notready 0, noresp 0
    WiFi firmware version 1.20
    WiFi MAC address a0:20:a6:19:26:c7
    WiFi Vcc 3.39, reset reason Turned on by main processor
    WiFi flash size 4194304, free heap 15904
    WiFi IP address 192.168.1.187
    WiFi signal strength -46dBm, reconnections 0, sleep mode modem
    HTTP sessions: 1 of 8
    Socket states: 2 0 0 0 0 0 0 0
    Responder states: HTTP(1) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0)
    === Filament sensors ===
    Extruder 0 sensor: ok
    
    ```I'm sorry for coming to the forum with so many issues. What did i break and what do i need to fix it. My rework kit should be here tomorrow.


  • you may have fried the analog sensors on the CPU



  • I'm looking into the VSSA fuse. Eerything but the temps work.



  • multimeter on ground and vssa is OL



  • ordering 507-1797-1-ND



  • hmm so maybe the power supply is ok. It must have been the hot-end hitting bed clip. I found other post saying the same thing.


  • administrators

    It's also possible to convert the board to use a self-resetting PTC fuse, see https://duet3d.com/wiki/Connector_and_spare_part_numbers#VSSA_fuse.



  • Thank you, 507-1797-1-ND is a 0ZCJ0020FF2E, so that is the plan.



  • Ok I replaced the one for tr1 and tr9 tested and working. But i lost one of the pads when removing the tr5(the first one i did). The pad i lost was the pin2 or the source. Where can i connect it too. Please save me. Oh, i also removed the vssa fuse, my auto resetting one should arive tomorrow. It i put it where the original on was, can i stil connect the resistor on the back.



  • Ok I replaced the one for tr1 and tr9 tested and working. But i lost one of the pads when removing the tr5(the first one i did). The pad i lost was the pin2 or the source. Where can i connect it too. Please save me. Oh, i also removed the vssa fuse, my auto resetting one should arrive tomorrow. It i put it where the original on was, can i stil connect the resistor on the back.



  • when lifting the old mosfet the pad came with 😞


  • administrators

    The source pins of the mosfets are all connected to ground. So you can connect the source pin of that mosfet to the source pin of one of the other MOSFETs. Or you may be able to connect it to the ground via that the pad was originally connected to.

    The new VSSA fuse is larger than the old one so it doesn't fit in the same place.



  • Thank you for all the help. I appreciate the level of support you provide. I will do my best to contribute back to the form when I can.


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