No video output

Discussion in 'TASCAM X-48 and X-48MKII' started by Scott Baker, Sep 26, 2016.

  1. Scott Baker

    Scott Baker New Member

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    I am trying t reset the bios on an X48 that had a way dead battery. Unfortunately I can't get any video to show up on the monitor, which makes resetting the bios a bit problematic. Anyone see this issue before?I have tested the monitor with another computer so I know the monitor works. I have a feeling I can get this back to life if I can get over this hurdle. The bios dance looks very familiar to the Mackie HDR, which shouldn't surprise me since the late great Bob Tudor had a hand in designing both machines. Anyway, I look forward to the knowledge base throwing some ideas out there.

    On a another note, if I let it sit long powered up, I get the red dancing OL LEDs across the VU meters.

    Thanks,
    Scott
  2. Scott Baker

    Scott Baker New Member

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    Upon further investigation, I am thinking I have some bad caps on the motherboard. I lifted the TDIF card out of it so I could see better and it appears that about 7-8 caps are toast with the tell tale ever so slight bulge on the top of them. Looks like I got get on digikey and get some caps and break out the iron and see if I can rehab this thing.
  3. Scott Baker

    Scott Baker New Member

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    Guess what I am doing today...Ugh.

    [​IMG]
  4. Scott Baker

    Scott Baker New Member

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    [​IMG]

    Here is a pic of the caps in question that look to be bad. It is 5 short green ones, only 4 in the pic as I pulled one to get values. and two brown . The green are 6.3volt 1500uf and the brown are also 6.3volt and 3300uf, if that helps anyone out there.
  5. Scott Baker

    Scott Baker New Member

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  6. Scott Baker

    Scott Baker New Member

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    Finally, working.

    [​IMG]

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  7. Thelamp777

    Thelamp777 New Member

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    I'm working on this right now and wondering witch caps you got exactly?
  8. Scott Baker

    Scott Baker New Member

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    They are right behind the heatsink to the processor. Between the processor and and the back panel, if that helps.
  9. Thelamp777

    Thelamp777 New Member

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    Sorry better question I found them but I just don't know exactly what these are specifically called to order them.
    Like what type of caps?
  10. Thelamp777

    Thelamp777 New Member

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    Looks like I need to replace all 5 of the 150 and just 1 330.

    Attached Files:

  11. Scott Baker

    Scott Baker New Member

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    Sorry, I misunderstood what you were asking. They are electrolytes caps. I can't remember the size in millimeters off the top of my head. If you pm me your address, I may have some extra from the project I can send you.