M92T36 or BQ24193

Discussion in 'Switch - Console, Accessories & Hardware' started by nerirififi, Jan 4, 2019.

  1. Agilato

    Agilato GBAtemp Regular

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    It's a filter i noticed some board revisions doesn't have them at all...
     
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  2. FXDX

    FXDX Advanced Member

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    Thanks but that doesn't help me much.....
     
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  3. Agilato

    Agilato GBAtemp Regular

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    Yes, but at least if you know the propose you can find out how important is that.
    Looks like it's hight frequency filter basically a dual-capacitor that runs parallel you can see one side has orientation mark like polarized capacitors,

    Those aren't required in to the circuit, they just clear signals and defend from hight frequency spikes... usually you can find them in to the low voltage or data lines.

    But this information just a guess, 0 trust to my words!
     
    Last edited by Agilato, Oct 11, 2019
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  4. FXDX

    FXDX Advanced Member

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    I measured it and it's short. It has to be replaced but I don't know how to look for it......
     
  5. Agilato

    Agilato GBAtemp Regular

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    It's common situation for 'filter' caps, they tented to drain, just take it off and check how's line, is short still there?
     
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  6. FXDX

    FXDX Advanced Member

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    I removed it and short disappears..
     
  7. Agilato

    Agilato GBAtemp Regular

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    If my theory is right everything should work correctly now...
    But idk where to find this guy other than donor board.
    I'll check in my trash may be some board revisions have better info on them...
     
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  8. FXDX

    FXDX Advanced Member

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    Thank you very much Sir !:bow:
     
  9. Pintglass

    Pintglass GBAtemp Regular

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  10. FXDX

    FXDX Advanced Member

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    Last edited by FXDX, Oct 11, 2019
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  11. Agilato

    Agilato GBAtemp Regular

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    I was almost right... serves same purpose filtering, from middle pin to ground on other side... Live and learn...
    Good catch guys! And yes it can work without it... but for how long :gun:
     
    Last edited by Agilato, Oct 12, 2019
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  12. solac

    solac Member

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    Jun 21, 2009
    i have checked the coils. seems like the first one doesn't have any continuity at all. where can i get one of these? does anyone know the value of the choke ?
     
  13. solac

    solac Member

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    Jun 21, 2009
    mine has no continuity at all. the other filters i measured it has resistance of around 1.5 to 1.6 the one in question is just O.L. on my multimeter. i was thinking of just putting a jumper to this, but when something goes wrong it will fry my P13USB chip once more and might cause a lot more damage. so i might try to find a replacement for this part.
     
  14. solac

    solac Member

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    i could not attach any link to the image since i am just a new member. so i just grab a photo from another thread. the part that i need is the 5th choke when looking at this photo the one that has 6 legs. near the charge port its connected to the p13usb chip




    [​IMG]
     
    Last edited by solac, Oct 14, 2019
  15. Mardare

    Mardare Member

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    Jul 12, 2017
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    I am used to it and it works perfectly.
    https://ro.mouser.com/ProductDetail...=sGAEpiMZZMsVJzu5wKIZCVmiNDXvL6WFCSe53ELiIcQ=
     
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  16. tr1p1ea

    tr1p1ea Member

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    Jun 22, 2017
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    I've checked the USB port and there doesn't appear to be anything wrong. The cap doesn't appear to get hot either. I'm not sure it's the actual cap that's defective, I was thin king the BQ24193, but when I removed it nothing seems different.
     
  17. Pintglass

    Pintglass GBAtemp Regular

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    Just remove the cap, have you still got BQ24193 removed if so then all that leaves is the small cap just above the one your testing.
     
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  18. tr1p1ea

    tr1p1ea Member

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    Yes I still have the BQ removed, I'll take out the cap and check the other smaller cap too.

    Thanks!
     
  19. solac

    solac Member

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    Jun 21, 2009
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  20. tr1p1ea

    tr1p1ea Member

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    Jun 22, 2017
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    Looks like my issue may have been a bad cap - I removed it and there is no short over both pads and the other tiny cap that was showing as shorted is ok now too.

    Problem is I dont have a replacement and have to order some...
     
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