2SA1145/2SC2705 AU-X901 Transistor Sub?

Discussion in 'Exclusively Sansui' started by wlhd1610, Aug 11, 2017 at 1:04 PM.

  1. wlhd1610

    wlhd1610 Penny and her new friend Subscriber

    Messages:
    2,066
    Location:
    upstate new york
    Hi,
    I have a very nice X901 in for restoration that the notorious Sansui corrosive glue has compromised quite a few nearby components.
    [​IMG]

    I have already pulled the caps and will pull some resistors.


    I don't like the look of the 2SA1145 and 2SC 2705 legs and would like to replace them but don't see them listed anywhere in all the transistor substitution threads.
    [​IMG]

    Both Mouser and DigiKey show them long obsoleted so no luck there.

    Any recommendations?

    Bob
     
  2. Hyperion

    Hyperion Roobarb & Custard Subscriber

    Messages:
    38,669
    Location:
    Hertfordshire, UK
    Why give yourself additional troubles, just remove the old transistors and clean them, also it looks like the glue got under a few resistors - you need to lift them at one end and clean underneath them too.

    However:-
    2SA1145 -> KSA1013, or optionally KSA1381 (mouser, etc)
    2SC2705 -> KSC2383, or optionally KSC3503 (mouser, etc)

    EDIT
    Updated positions of last KSA/KSC subs (were wrong way round - thanks Larry)
     
    Last edited: Aug 14, 2017 at 2:07 AM
    SansuiJavier and Hipocrates like this.
  3. wlhd1610

    wlhd1610 Penny and her new friend Subscriber

    Messages:
    2,066
    Location:
    upstate new york
    Ok John,
    Will do.
    I didn't know if the glue had seeped or corroded up inside the actual body of the transistor and possibly could cause trouble in the future.
    I plan to finish removing the crappy looking resistors and continue cleaning.

    Thanks,
    Bob
     
  4. avionic

    avionic " Black Knights" Subscriber

    Messages:
    34,515
    Location:
    Fort Dodge, Iowa
  5. avionic

    avionic " Black Knights" Subscriber

    Messages:
    34,515
    Location:
    Fort Dodge, Iowa
    I've never had any problems with B+D's japanese transistors.
     
  6. avionic

    avionic " Black Knights" Subscriber

    Messages:
    34,515
    Location:
    Fort Dodge, Iowa
    Shit.. Those transistors will look like new if you just clean them up a bit.
     
  7. larryderouin

    larryderouin Do I get Food, Med's, or more gear this Month? Subscriber

    Messages:
    19,490
    Location:
    Glen Burnie Md.
    John; I think you got a case of temporary Brain - Hand disconnect. You got the KSA's and the KSC's mixed up in your post # 2
     
    Hyperion likes this.
  8. wlhd1610

    wlhd1610 Penny and her new friend Subscriber

    Messages:
    2,066
    Location:
    upstate new york
    Thanks , I totally forgot about B&D even though they're practically in my backyard.

    I will remove the resistors and clean underneath them but one leg on each of two transistors is partially eaten through by the infamous corrosive Sansui glue.

    Bob
     
    avionic likes this.
  9. avionic

    avionic " Black Knights" Subscriber

    Messages:
    34,515
    Location:
    Fort Dodge, Iowa
    Well climb over the fence and get your transistors.:biggrin:
     
    Hyperion and skippy124 like this.
  10. wlhd1610

    wlhd1610 Penny and her new friend Subscriber

    Messages:
    2,066
    Location:
    upstate new york
    I did!

    As a side note, these guys are located in Russell City ,PA in the heart of the Allegheny National Forrest where they have hundreds of miles of ATV trails .
    Been there a dozen times over the last twenty years.
    A lot of the ATV trails are old logging/oil field roads that still have quite a bit of the old oil derricks,walking beams,etc set up.

    Bob
     
    avionic likes this.
  11. Hyperion

    Hyperion Roobarb & Custard Subscriber

    Messages:
    38,669
    Location:
    Hertfordshire, UK
    Good spot Larry - thank you! - now corrected in post #2 and explained.
     
    Last edited: Aug 14, 2017 at 2:31 AM

Share This Page