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stk

  1. M

    Panasonic SG-55

    Hello, I recently got damaged Panasonic SG-55 amplifier, with no sound. I have replaced all caps and sound came back (only on 1 channel) so i thought i will search for STK IC and to my suprise i have found what seems to be original Sanyo STK460 from guy at craiglist. After changing STK i now...
    • mortxs
    • Thread
    • buzz humm panasonic sg-55 stk stk459 stk460 tape deck
    • Replies: 1
    • Forum: Solid State
  2. M

    STK459/STK460 discrete components replacement

    Hello, My friend bringed me he's Panasonic amplituner with tape deck because it went off suddenly. I managed to replace all capacitors but one of channels is not working and i thought i will buy STK459 replacement, change it and that's gonna be it. Obviously this STK459 i bought is defective...
    • mortxs
    • Thread
    • components discrete replacement stk stk459 stk460
    • Replies: 0
    • Forum: Solid State
  3. ecluser

    Easy, basic testing of Darlington power pack (STK, Sanken, etc.).

    The objective of this thread is to provide an easy way to test Darlington power output packs before installation in an amplifier. Full characterization like maximum power, THD, is not the object of this thread. It is rather a simple test with minimal tools to check if a power pack is operational...
    • ecluser
    • Thread
    • sanken stk
    • Replies: 5
    • Forum: DIY
  4. R

    STK 0070 II

    Bună, aș dori să înlocuiesc circuitele STK finale într-un amplificator Fisher BA 3000, acestea sunt STK 0070 II. Este posibil să le înlocuiți ca în Fisher CA 880 (https://audiokarma.org/forums/index.php?threads/project-fisher-ca-880.977191/#post-15446308)? Cu siguranță mai sunt și alți...
    • RED X
    • Thread
    • stk
    • Replies: 6
    • Forum: Fisher
  5. R

    Sharp Optonica SM-1616 ...IC needed

    Hi all, Newbie here who has a Sharp Optonica SM-1616 that does not power up. I have taken it to a tech and says he cant get the IC's (RH-IX1066AFZZ) to fix it. I have looked on ebay but cant find any either. Does anyone here have an idea where to get them? Any help will be greatly appreciated...
    • Rissoles
    • Thread
    • integrated circuit sharp optonica stk
    • Replies: 3
    • Forum: Solid State
  6. PE9ZZ

    STK2145 Enigma - fake?

    I'm trying to help out (remotely) a forum member on the Dutch forum Buizenradioclub (tube radio club). His Akai AM-U33 blew its STK module. After getting a replacement module from Littlediode it went into almost full conduction leaving only a few volts due to the fortunate use of a DBT. When...
    • PE9ZZ
    • Thread
    • akai am-u33 fake module stk stk2145
    • Replies: 42
    • Forum: Solid State
  7. Jamie Dh

    mcs 3253,power transistors ???

    help me!I have a question, do anyone knows if the mcs 3253 uses the same type of power transistors as the pionner sx 950 or the mcs is stk? please I'd really appreciate it.
  8. P

    Technics SU-8044 STK0039 issue 55V???

    Hello, I'm trying to repair a Technics SU-8044 amplifier. The last owner changed the LEFT STK because the left channel wasn't working. After that it still doesn't work. I dismounted both STK to test them but I don't know how to test them properly with a multimeter. I joined the schematic...
    • pirogoner
    • Thread
    • stk stk0039 su-8044
    • Replies: 15
    • Forum: DIY
  9. Brivan

    Testing STK Modules?

    I recently stumbled upon an Ebay listing for an STK-0080 Darlington power pack. The seller provided this image to prove the module as being good. I had no idea these could be tested with a transistor/semiconductor checker. Is this a valid testing method for STK modules?
    • Brivan
    • Thread
    • darlington power pack darlington power packs stk stk module stk modules stk power pack stk power packs
    • Replies: 24
    • Forum: Solid State
  10. J

    JVC JA-S22 - STK0040 vs STK0040II

    Hi, I am fixing JVC-JAS22. One of the STKs is blown. They are STK0040. I can find both 0040 and 0040II. The II version much cheaper. Can use 0040II instead of 0040? As per the datasheet pins 4-7 on 0040 are not used (they are not connected to anything in the amp either) while the version II...
  11. QSilver

    Is this a fake STK pack, or something else?

    I got this Technics SU-C03 with a blown STK1050. I bought one from a company called LittleDiode. I fitted the one they gave me and I could set the DC offset and everything seemed good until I hooked it up to a scope. There's a lot of noise on a 1kHz sine wave on the channel with the "new" stk...
    • QSilver
    • Thread
    • stk stk1050 technics technics su-c03
    • Replies: 23
    • Forum: Solid State
  12. Johnny_Law

    SX-680 humming changes with STK pack / treble and bass adjustment

    Here's a doozy. I received the unit with no lights working and the vu gauges pegged at 1 watt with the power on. I found that R401 had been replaced with a 1/4 watt resistor and was blown, so in went a 1/2 watt 33ohm resistor. I also had a spare pair of STKs which went in. I also re-soldered...
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