It didn't quite catch on fire ;)

Discussion in 'BigBox General Chat' started by Ephemeris, Jul 25, 2018.

  1. Ephemeris

    Ephemeris Well-Known Member

    Joined:
    Nov 25, 2015
    Messages:
    365
    Likes Received:
    223
    My BigBox had stopped in the middle of a few prints. I thought the power supply was glitching and ordered a new one in case that was the cause. A couple nights ago it stopped in the middle of a print but this time there was no power. Flipped the power switch a couple times and no sign of power.

    Okay I thought, the PSU finally died. Good thing I bought a new one! When I had some time later, I took the bottom off and replaced the PSU. I put the bottom back on and flipped the switch - NOTHING - No power.

    I pulled the fuse and checked it. The fuse was fine :confused:

    Okay take the bottom off. Again. A little troubleshooting with a meter and I conclude the switch has failed open. I dismount the switch and what do we see?

    IMG_3001.JPG

    Melted plastic next to the terminal on the left. If you look carefully you can see the copper wire that slots into the terminal blade is a bit burned and the tinning is gone from it.

    So, on the bright side, it didn't set the house on fire.
     
    #1 Ephemeris, Jul 25, 2018
    Last edited: Jul 26, 2018
  2. Old_Tafr

    Old_Tafr Well-Known Member

    Joined:
    Mar 7, 2016
    Messages:
    636
    Likes Received:
    81
    Do you have earth leakage trips on your mains power ?
     
  3. Ephemeris

    Ephemeris Well-Known Member

    Joined:
    Nov 25, 2015
    Messages:
    365
    Likes Received:
    223
    When I built that was not required by building code except where there is water (kitchen, bath, etc.) The EphBox is on a UPS but I can't swear what it does when a ground fault occurs
     
  4. Old_Tafr

    Old_Tafr Well-Known Member

    Joined:
    Mar 7, 2016
    Messages:
    636
    Likes Received:
    81
    Maybe you could add one of these plug in earth leakage trips on the output of the UPS.
     
  5. R Design

    R Design Well-Known Member

    Joined:
    Oct 7, 2015
    Messages:
    942
    Likes Received:
    187
    Made in China?

    So I guess we should all be replacing them...
     
  6. Old_Tafr

    Old_Tafr Well-Known Member

    Joined:
    Mar 7, 2016
    Messages:
    636
    Likes Received:
    81
    It "works" like this....

    • You buy a cheap item...
    • It works ....... j u s t........
    • It fails.... at least some of them do...
    • You buy another from the only supplier still in business as the original (more expensive) supplier could not compete...
    • In the end you end up paying more than the original good item would have cost as you have bought two of the cheaper items...
     
    mhe likes this.
  7. Falc.be

    Falc.be Well-Known Member

    Joined:
    Sep 4, 2015
    Messages:
    263
    Likes Received:
    40
    mine is failing as well, once the switch is turned on I can flip it off, but the power stays on
     
  8. Old_Tafr

    Old_Tafr Well-Known Member

    Joined:
    Mar 7, 2016
    Messages:
    636
    Likes Received:
    81
    Better make available? ............. which of course has to fit in the cut out.
     

Share This Page