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Makita DC10WA charger - R2 and R3 resistors, replacement for MIP3E5MY transistor

linek27 16275 13
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  • #1
    linek27
    Level 11  
    Hello
    Makita DC10WA charger (7.2V - 10.8V Li-Ion) designed for charging Makita screwdriver batteries. Mosfet - MIP3E5MY has been damaged. I am asking for help in choosing a replacement for the above. transistor. Purchase of the original, probably only directly from China? In addition, the SMD R2 and R3 resistors on the high voltage side are illegible and therefore I ask you to provide their value.
    Makita DC10WA charger - R2 and R3 resistors, replacement for MIP3E5MY transistor
    Thank you for your help.
  • #2
    pawlik118
    Level 31  
    show a picture of the whole plate, maybe I have one that works well
  • #3
    linek27
    Level 11  
    Here you are.
    Makita DC10WA charger - R2 and R3 resistors, replacement for MIP3E5MY transistor
  • #4
    Anonymous
    Level 1  
  • #7
    linek27
    Level 11  
    Thank you for your help. Unfortunately, the original can't be obtained. I will try MIP3E4MY and possibly MIP2E5DMY. Only those illegible resistors. Maybe some hints?
  • Helpful post
    #8
    pawlik118
    Level 31  
    You must draw a schematic diagram of this inverter with these illegible resistors, and select them based on the inverter driver documentation.
  • #10
    pawlik118
    Level 31  
    maybe it's better to buy a new charger for PLN 100?
    As for the repair - without a piece of the scheme with a circuit with these resistors, it is difficult to help.
    As for your last entry, having basic knowledge about the operation of FLYBACK power supplies you can more or less get to what resistors are to be there. But without the pattern drawn from the tile, it's hard to guess the values. Show the diagram you have drawn.
  • #11
    linek27
    Level 11  
    Please diagram. Of course, you can buy a charger, but to check the values of these resistors :) . Sometimes it's fun to fix something yourself and still learn something. How about these resistors?
    Makita DC10WA charger - R2 and R3 resistors, replacement for MIP3E5MY transistor
  • #12
    pawlik118
    Level 31  
    send the tile view from the elements side. The diagram shows that the resistors are mounted there differently than usual.
  • #14
    linek27
    Level 11  
    Hello
    Loader repaired. For descendants, the MIP3E5MY converter system was replaced with MIP3E7MY. It is available for purchase in decent electronics stores. Resistors R2 and R3 have a value of 1 ohm and are connected in parallel. I think that's it. Subject to close.