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obsolete

  1. J

    Marantz 2215B Power Supply Transistor Subs

    Hi all, I am currently restoring a Marantz 2215b as my first restoration. I am working on the power amp and I am having trouble sourcing a suitable replacement transistor for H709 and H710. The originals were 2SA684 which folks have said to substitute with KSA1220AY. However KSA1220AY is out of...
    • J85t
    • Thread
    • 2215b 2sa684 ksa1220 main amplifier marantz obsolete p700 restoration substitute transistor
    • Replies: 9
    • Forum: Marantz Audio
  2. Racingh11

    TO3 MOSFET - end of life

    I just went to get some new TO3 output transistors from ProFusion / Exicon, and they are now marked as 'end-of-life'. Better get them while they last. Does anyone know of any other TO3 lateral MOSFET transistors out there that are made by reputable companies...
    • Racingh11
    • Thread
    • exicon mosfet obsolete output profusion transistor
    • Replies: 2
    • Forum: Solid State
  3. D

    IR2431 replacement

    Hi! I have an amp that uses IR2431 led drivers for its output meter but of them is cooked (or maybe both), and they are pretty expensive (and they take a long time to ship, not to mention on my board they are "blobbed" ICs not packaged ones, so I'm not even sure I can replace them). So is...
    • deletecm
    • Thread
    • led driver ic obsolete
    • Replies: 0
    • Forum: DIY
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