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TCD240 Power Supply Schematic

Discussion in 'TiVo Help Center' started by lillevig, Jan 20, 2013.

  1. lillevig

    lillevig Cold in East Iowa

    Dec 6, 2010
    Marion, Iowa
    Had the power supply go out on my TCD240 box. Fortunately, I had a spare unsub unit stored away for just this purpose so I'm back up. Initial indications are that it is the 5 volt side that is bad. No bulging caps, no obvious hot spots on the board so maybe it's just the regulator. here's the question: does anyone have a schematic for this thing?
  2. replaytv

    replaytv gun talk ignore list

    Feb 20, 2011
    Denver ish...
    I could probably draw you one if you needed it real bad.
  3. unitron

    unitron Active Member

    Apr 28, 2006
    semi-coastal NC
    What voltage readings are you getting under load on the +5 and +12 lines?

    I think those schematics are printed with a special ink made of unobtanium. :(

    Even without bulges, I'd try replacing the caps under the heat sink overhang.

    You know, the ones that are hardest to get to. ;)

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