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2sc458

  1. M

    2SC458 Replacement Clarification (Kenwood KA-6000)

    Hello Everyone. I am planning on restoring an old Kenwood KA-6000 and have read probably a 100 threads on the dreaded 2SC458LG replacements and my head is spinning rapidly (although I've learned a lot so far). It seems a common replacement is the KSC1845, although some here on the AK say these...
  2. Swaler61

    Kenwood KR-4140 Work Observations

    Hey all, I'm working on a new to me Kenwood KR-4140, and it is in overall pretty good shape, and so far works pretty well and really liking the tone! For background, I'm a career EE, but haven't worked on a lot of old solid state circuitry, as I'm more of a guitar amp and old radio guy. Some...
  3. oldvinyldude

    Transistor markings Questions

    I have a KA7002 integrated. I have some sporadic noise bursts that are audible with no source playing. My hunch is one or more failed transistors, as the unit uses transistors marked C458 and C871. I gather these are 2SC458's and 2SC871's-correct? Members here have posted suggested...
  4. yotatoyota

    Akai GX-4000D right channel is not recording

    Hello. I'm new to this forum. I'm from Eastern Europe and English is not my native language, so I apologize for any mistakes in advance. So I have recently bought a used black Akai GX-4000D tape recorder which, despite its age, is in great condition overall, but unfortunately, the right...
    • yotatoyota
    • Thread
    • 2sc458 2sc945 akai gx 4000d left channel not recording transistors
    • Replies: 7
    • Forum: Tape
  5. L

    JVC 4VR-5456X repair of Phnono stage/CD-4 circuit gone wrong, 2SC458

    Hello everyone, Anyone here with JVC CD-4 circuit experience? I've gotten a quad amp from a friend - Its a JVC 4VR-5456X - and once cleaned up, it it in beautiful condition. I have cleaned out all the pots and contacts with Kontakt 60 -> Kontakt WL -> Kontakt 61 by the book and everything seem...
    • Loddestuen
    • Thread
    • 2sc458 4vr-5456x cd-4 demodulator cd-4 phono stage
    • Replies: 0
    • Forum: DIY
  6. Isaac C.

    Hitachi SR 603 Transistor Question

    Hello everyone, I have a Hitachi SR 603 that I purchased a few months ago that has a hissing noise that gets louder as the volume is increased. For the longest time I thought it was noise from my turntable, but it is there regardless of what input is selected. It wasn't until today that I...
    • Isaac C.
    • Thread
    • 2sc1815 2sc2240 2sc458 hitachi hitachi sr 603 ksc1845 transistor
    • Replies: 25
    • Forum: Solid State
  7. R

    Question about 2SC458 transistors...

    Are they all 2SC458 transistors bad? It seems that there are at least 2 different case styles. Are the 'newer' ones that were made, say in the 80's, also bad? I have a JVC A/V receiver that uses a few of these in the video circuits. I have my satellite receiver hooked through this and once in...
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