Recent content by Jarasmus

  1. J

    Burnt resistor’s value for MAS830L multimeter

    Dear 73's de Edd, I always remembered your long but very informative answer which indeed encouraged me dig deep into this topic. Thanks a lot introducing the range and differences of multimeters. So, from I cared to repair my 5€ multimeter, which is almost 2 years from now, I've gone a bit...
  2. J

    Burnt resistor’s value for MAS830L multimeter

    Microscopic SMD 1R20, closest to 1 ohm I found. No luck. Ammeter values jumping over limits after >0.25A applied. Okay, how to DIY 0.01Ω resistor?
  3. J

    Burnt resistor’s value for MAS830L multimeter

    Wire: Resistance near to 0.01 (I guess) This is (pic) the results. I’ve tried with 0.1 ohm － numbers get lesser. Next: I’ll see it with a 1 ohm value.
  4. J

    Burnt resistor’s value for MAS830L multimeter

    This is mystery to me. So how does this work then, such nearly no resistance. The nearest value of SMD resistors I’ve got, is -O- Why can’t I put just a thin wire, or weak fuse instead? Serious question. Examples work better than a theory. Thanks for your patience.
  5. J

    Burnt resistor’s value for MAS830L multimeter

    Not located on schematic, but located on PCB: SMD R150 survived and if there was 1Ω from 2 resistors, the burnt one should be was 1R85 (previously mistaken with R050) ? (0.15+1.85)/2 There’s now confusion between 0.1 and 1 Ω
  6. J

    Burnt resistor’s value for MAS830L multimeter

    ‍ This means, that next to original R 0.15 in parallel there was R 0.05 which has burnt. Referring to schematic. Right?
  7. J

    Burnt resistor’s value for MAS830L multimeter

    Thanks Bertus. Yes, that’s on 10A outlet. I’ll try to find combination to make 0.99Ω － this makes more sense actually.. TBA
  8. J

    Burnt resistor’s value for MAS830L multimeter

    ~0.075Ω Supposed 0.15/2 = 0.075 Installed 0.22/3 = 0.0733.. Unfortunately no luck.. I wonder, were there both R 0.15Ω? Or such slight diff in Ω can output so big error? See pics attached.
  9. J

    Burnt resistor’s value for MAS830L multimeter

    For programmers mind it is even more fun! I did never expected I’ll be getting fascinated about it. I’ve always seen it nerdy business. All started with giving up on shit Chinese controllers and making my own on Arduino and diversión into electronics was right on it doorstep. Still, I’m very...
  10. J

    Burnt resistor’s value for MAS830L multimeter

    … thanks, but how do I suppose to read this?
  11. J

    Burnt resistor’s value for MAS830L multimeter

    This is super cool explanation. Thanks! I feel stupid not adding up resistor’s values. Few videos should help to cover this topic quickly.
  12. J

    Burnt resistor’s value for MAS830L multimeter

    I’m new to electronics, but programmer in general. Some moments later I’ve applied same logic － Teo diff value resistors won’t make any sense. Why then have to be soldered 2SMD x 0.15Ω, but not one 0.15Ω 1W (2W) － still a mystery to me. Yes, thought the amp-measure (have to swap the...
  13. J

    Burnt resistor’s value for MAS830L multimeter

    Yes, it makes sense － same value. No, I didn’t try because I can’t find in my scrap 0.15Ω.. but I did put 0.22Ω (2W) instead －doesn’t work..
  14. J

    Help to find alternative for MOSFET SR3710T (unknown?)

    Hello all. I found one burnt mosfet in dc-ac inverter, but I’m unsure what type is it. Marked SR3710T (2050P) Does this coincide IRF3710? Thanks in advance. Picture attached.
  15. J

    Burnt resistor’s value for MAS830L multimeter

    Hello all. Anybody got a classic cheap multimeter MAS830L? The circuit inside named XT850F. I’m looking for a burnt SMD resistor’s value, separating Amp inlet. See attached picture. Thanks in advance.
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