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transistor replacement

  1. dlucy

    How to apply thermal compound to TO-3 mica insulators

    I've read a few of the threads here on AK on which thermal compound to use and how to apply it when replacing TO-3 transistors. I'm replacing all the output transistors in a vintage Kenwood KR-6140A quadrophonic receiver, so I'm doing this thermal compound on a mica insulator for the first time...
    • dlucy
    • Thread
    • heatsink mica insulator thermal compound to-3 transistor replacement
    • Replies: 12
    • Forum: Solid State
  2. R

    Transistor designations

    I am looking at the Sansui service manual for my receiver to begin compiling a list of replacement transistors to buy. On several lines the text under the Description column will differ. There will be something like: Part No. Stock No. Description TR24 0305991 2SC403(C)3 TR25...
    • rkgren1
    • Thread
    • identification manual transistor replacement
    • Replies: 11
    • Forum: Solid State
  3. S

    Sansui 771 Transistor replacements.

    hello, i was wondering if anyone out there knows the replacement Transistors for the 771? i was online looking for the ones listed on the Schematic but it seems they dont make them anymore and its seems almost impossible to find good replacements? Please help!
    • Sansui 771
    • Thread
    • 771 replacements sansui sansui 771 sansui771 transistor replacement transistors
    • Replies: 2
    • Forum: Exclusively Sansui
  4. S

    Sherwood s8900 - transistor sourcing help

    So, bought a non-functional Sherwood S8900. Got more than I bargained for - bad driver board instead of a bad filter cap. The boards are not matched so it appears someone may have been in here before me. I'm pretty sure root cause of problem is a bad capacitor (leaky 4000 uf filter cap on the...
    • special_20
    • Thread
    • recap restoration project sherwood sherwood s7900 sherwood s8900 transistor replacement
    • Replies: 56
    • Forum: DIY
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