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Thread: Boss OD-2. LED issues.

  1. 12-07-2018, 03:00 AM #1
    ziggy007
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    Boss OD-2. LED issues.

    Embarrassed to admit this pedal is beating me atm
    Pedal ops ok.
    Led only works on battery. Nothing on boss pwr adapter. If I provide an earth to the led at r53 it glows bright. If I Bypass D1 and r2 (ie pin 5 to ground) led bright. (Replaced both)
    At a loss. I’m sure the issue is staring me in the face!
    Cheers Gav

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  2. 12-07-2018, 03:12 AM #2
    Enzo
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    schematic?

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  3. 12-07-2018, 03:13 AM #3
    The Dude
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    Do you have something plugged into the input jack? The ground is completed by the jack shorting ring to sleeve when a plug is inserted.

    Schematic here:
    https://www.hobby-hour.com/electroni...-schematic.gif

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  4. 12-07-2018, 03:18 AM #4
    ziggy007
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    Click image for larger version.  Name: od2-turbo-overdrive-schematic.gif  Views: 13  Size: 71.1 KB  ID: 51406

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    Cheers,
    Gavin
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  5. 12-07-2018, 03:19 AM #5
    ziggy007
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    Yep,there's a jack in the input. all its grounds checked ok The pedal works fine. its just the LED. LED works fine on Battery.

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    Cheers,
    Gavin
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    Tone, its in your fingers mate!!
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  6. 12-07-2018, 03:28 AM #6
    The Dude
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    D1 and R2 are good?

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  7. 12-07-2018, 03:30 AM #7
    ziggy007
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    Removed and Tested good. substituted both no diff.

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    Gavin
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  8. 12-07-2018, 04:15 AM #8
    g1
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    Some boss pedals the led won't work on adapter if it's not the specified boss adapter. Does it call for the PSA or ???

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  9. 12-07-2018, 04:17 AM #9
    g1
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    Here's the info: https://music-electronics-forum.com/...l=1#post512364

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    Quote Originally Posted by The Dude View Post
    But, I did learn something. There are protons, neutrons, electrons, ............ and morons.
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  10. 12-07-2018, 04:28 AM #10
    ziggy007
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    G1,
    You sir are a legend.
    Thanks
    I thought I was going mad. Certainly done my duds on this job, but have learnt something, so happy!
    Cheers mate
    Gav

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    Cheers,
    Gavin
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  11. 12-07-2018, 05:23 AM #11
    g1
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    Glad to be of help. Fortunately, it was one we had just discussed recently, so I could still recall it.

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    Quote Originally Posted by The Dude View Post
    But, I did learn something. There are protons, neutrons, electrons, ............ and morons.
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