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Thrustmaster T300 main board USB Issue

Discussion in 'Troubleshooting and Repair' started by Repairit, Aug 13, 2020.

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  1. Repairit

    Repairit

    6
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    Aug 13, 2020
    Hi looking at the main board on the T300 where the USB input comes in . I have 5v but then it seem to go into a filter .. I am not quite sure if this component puts 5v to the rest of the three pins . I have 5v pin 1,pin 2, 0v pin 3 1,5V pin 4 0V. (See pic) the main board is marked XF01 is it a fuse? anyone have a idea.. I am not getting 5V at the Opto, so the PSU won't switch on.. I have manually power the 5V at the Opto and all works fine ,,

    thank you in anticipation. kind regards
    Richard
     

    Attached Files:

  2. 73's de Edd

    73's de Edd

    2,941
    1,246
    Aug 21, 2015
    Sir Richard . . . . .

    What it does seem there that you have yourself is a ferrite "dog bone" contrawound input inductor / line filter that has both of its fine magnet wire windings open, either :
    • 1 . . . Folded, spindled or mutilated
    • 2 . . . Burnt / or / blown open . . . . . ( burnt, being from a hot soldering iron dragged across by a pereson of either low intellect or intent of imparting damage upon.
    The 5V would be indicative of the incoming input voltage and then encounterig the open winding and finding no circuit path over to pin 2 and into that via just to its left and then routing to the other side of the PCB..
    Pin 4 is being connected to the ground plane that is GOING ALL OVER that side of the PCB with its multiple connections.
    Pin 3 , with it having a VERY-VERY low Ω2 path to ground via the BLUE winding, therefore must NOW also be open with it reading a 1,5 V " sneak voltage " on it .

    Find a replacement or rewind with two separate 40 + 40 turns windings of 38---42 gauge insulated magnet wire, as is being shown.

    ILLUSTRATION . . .

    upload_2020-8-14_5-4-51.png


    73's de Edd . . . . .

    Really fat people are really, really hard to kidnap !




    .
     
    Last edited: Aug 14, 2020
  3. Repairit

    Repairit

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    Aug 13, 2020
    Woow topman .....thanks for the info 73's de Edd, I think it may have been damaged by the last owner of this thustmaster unit... can this ferrite "dog bone" be bypassed to get this board running..or will this cause problems ...I dont think i could rewind it... I can't seem to find any on the net and not sure what value i should be looking for.... thank you for the diagram,,,could i find any on a old laptop main board?


    kind regards Richard
     
  4. Repairit

    Repairit

    6
    1
    Aug 13, 2020
    Has anyone got one of these ferrite "dogbone" input inductor / line filter. for my thustmaster T300 wheel main board or know where i can get one ? I can't seem to find one ...
     
  5. bertus

    bertus Moderator

    1,158
    439
    Nov 8, 2019
    Hello,

    Do you have a picture of the "dogbone" ferrite?

    Bertus
     
  6. Repairit

    Repairit

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    1
    Aug 13, 2020
    Yes i have
     

    Attached Files:

  7. bertus

    bertus Moderator

    1,158
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    Nov 8, 2019
  8. Repairit

    Repairit

    6
    1
    Aug 13, 2020
    Hi Bertus yes @73's de Edd did give me a suggestion ,, but i thought it would be easyer to rplace the part instead of trying to rewind one.. also in trying to get the old "dogbone" off is broke :( so thats why it would be better to replace.. the only thing that confuses me is that after the coil the connection goes to the SCLK pin which is connected to the ground pin 4 on the usb plug.. so why put 5v + back up that line? Surely this will blow the component... Is my understandind of this ,,, to give you more of what this is trying to achieve. all it dose is let the power supply know when the USB is connected to the computer or PlayStation so it can switch the power on for the thrustmaster racing wheel.. another fix i could do is run a 5v link to the opto , this would then switch the power on.. hopefully.. just as a note could i use two
    EMIFILr (Inductor type) Chip Ferrite Bead one on each pad ?

    kind regards. Richard :(
     
  9. Harald Kapp

    Harald Kapp Moderator Moderator

    10,592
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    Nov 17, 2011
    Threads merged.
     
  10. Repairit

    Repairit

    6
    1
    Aug 13, 2020
    Solution for the missing ferrite "dog bone" contrawound input inductor / line filter.. 73's de Edd picture is wrong..o_O the connection should be Pin 1 to Pin 3 & Pin 2 to Pin 4 .. if you connect it this way you will get +5V at the Opt \ Triac, if not you will blow the Opt\Triac by giving it -5v. I could not find another "dog bone" or do the rewind but I managed to use two "common Mode Choke Filter SMD Inductor WCM2012F2SF-900T04..:).it seem to do the job.. I have some spares if anyone need them:). The Thrustmaster T300 FFW is working fine now with no issues.. the only issue I have is getting my Lap time Down in ps4 F1 racing :(. thanks for all your input ….
     
    73's de Edd likes this.
  11. 73's de Edd

    73's de Edd

    2,941
    1,246
    Aug 21, 2015
    upload_2020-8-31_15-33-36.png
     
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