Replaced M92T36

Discussion in 'Switch - Console, Accessories & Hardware' started by RyoX9, Sep 17, 2019.

  1. RyoX9
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    RyoX9 GBAtemp Regular

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    images
     

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  2. Agilato

    Agilato GBAtemp Regular

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    If you have multimeter read voltage on 5th and 6th pin of the M92 chip. should be 3-5v charger plugged in.
    Check caps near BQ on shorts without a battery connected.
    I had 0amps on charge when BQ is completely dead, usually it burns a fuse also.
    Check battery voltage when it's plugged in to the switch and it's works, check voltage on battery unplugged, it might be a controller inside of the battery itself, try other one of u have it.
    There are resistors right on top of the BQ those are might be faulty also, check if u can read resistance across all of them. Be aware that in circuit they might have different readings +-.
     

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    Last edited by Agilato, Sep 19, 2019
  3. RyoX9
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    RyoX9 GBAtemp Regular

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    i do have multimeter but i dont know where is pin 5 and 6 for checking volts.
     
    Last edited by RyoX9, Sep 19, 2019
  4. Agilato

    Agilato GBAtemp Regular

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    The pins are numbered anti-clockwise around the IC (chip) starting near the notch or dot.
    Be careful to not short pins. You can Measure voltage on near caps that pins goes to.
     
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  5. FXDX

    FXDX Member

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    Sep 15, 2019
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    M92T36 pin 5 and 6.
     

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  6. xstre pwnsx

    xstre pwnsx GBAtemp Regular

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    Hey I just checked the voltage on my board if I bridge those two pins does it fry the chip, I had my multimeter set to voltage in the up 20 range and I placed one probe end on the capacitor and to it's corresponding pin on the m92t36 chip, so what occured was I was getting no reading on capacitor on pin 5 to pin 5, and capacitor pin 6 to pin 6... I didn't know what I was doing so I started tapping other pins and a lot of them said 3.3v... anyways I'm guessing I bridged pin 5 and 6 with the probes because now it doesn't charge at all...

    — Posts automatically merged - Please don't double post! —

    Though, one big thing I want to know is if no voltage reading was coming from the capacitors to their correpsonding pins does that mean that the M92T36 chip was faulty?
     
  7. Pintglass

    Pintglass GBAtemp Regular

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    When checking for voltages when the system is running you should place black probe on ground and red probe on the pin or cap or whatever your testing, in effect you were testing for continuity which is normaly done with the systems of and the battery disconnected.

    I'd say the chip was probably ok but you've possibly just caused a short.
     
    Last edited by Pintglass, Sep 20, 2019
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  8. xstre pwnsx

    xstre pwnsx GBAtemp Regular

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    Damn, So I got bad reads and fried the chip, oh well lesson learned. Thanks.
     
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  9. Agilato

    Agilato GBAtemp Regular

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    Voltage in those pins aren't coming from caps it's going to caps, if you didn't had readings on one of them mostly one of the power rails was in short. Checks caps around. if they are shorted to ground.
     
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