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transistor equivalent

  1. P

    Scott A436 transistor replacement

    Hello, I've been putting my hands inside a Scott A-436 lately. After replacing all capacitors, I checked for bias according to the service manual instructions. (https://retronik.silicium.org/DOCUMENTS/Audiovideo/Scott/Scott-A-416-A-426-A-436-Service-Manual.pdf). When I checked for the 0.2 mA DC...
  2. C

    Need Help Finding replacements Transistors for Pioneer SA-3000

    So this amp finally burned up one of the output transistors on the left channel and since it has been repaired at least 5 times in the last 2-3 years by a 3rd party with who knows what quality replacements we decided to just buy the parts ourselves and change all 4 output transistors and all 4...
    • Cosmic_S
    • Thread
    • pioneer repair advice help needed sa-3000 transistor equivalent
    • Replies: 11
    • Forum: Solid State
  3. JK-47

    Transistor, diode, IC sub lists from Mcintosh

    While seeking output subs for a MA6200 I was sent these pdf's for substitutes. I only saw pre-1975 docs online. These should cover later. I didn't see this in my searches so I asked them if they had docs. Sorry if this is a duplicate. PDF's attached.
    • JK-47
    • Thread
    • mcinstosh substitutes transistor equivalent
    • Replies: 5
    • Forum: McIntosh Audio
  4. M

    Pioneer SA-7500 II power stage - transistors replacement

    Hi guys, I'm (since yesterday) the proud owner of a "Pioneer SA-7500 II". The face plate and general condition is really good, but it doesn't sound fine. The left Channel is dead and the right has a lot of "hiss" (like white noise), so I opened. Inside I found that the right channel was...
    • Moncho
    • Thread
    • 2sa857 2sb527 2sb618a 2sc1438 2sd357 2sd588a pioner sa-7500 ii transistor equivalent
    • Replies: 20
    • Forum: Solid State
  5. mcaddie7

    Transistor Replacement Help

    Hi! Looking to replace some transistors but am getting lost in long threads and my head is spinning. Is any transistor replacement okay as long as the specs are higher than the last? What about a website like this that just gives you comparable ones? Alltransistors.com The transistors in...
    • mcaddie7
    • Thread
    • harmon kardon 930 hk twin power transistor transistor equivalent
    • Replies: 11
    • Forum: Solid State
  6. S

    Sony str 6800 issue

    Hllo everyone. I have problem with this little buddy :( i have done full recap also dual cap, changed faulty (hot) resistors 560 ohm for 5 watts, changed relay and sometimes have problem with right channel, on 0 level i hear little scratchy and sometimes loud crackless, sometimes relay can...
  7. kasbah512

    Pioneer SA-7500 Replacement transistors: guidance/troubleshooting

    I have a pioneer SA-7500 that refuses to dc bias, and i believe i know the source of the issue. I was swapping out capacitors and transistors, as provided in an ebay kit (i know... first project like this and i didn't know better), and everything works, dc bias's perfectly, however, the lowest...
    • kasbah512
    • Thread
    • pioneer sa 7500 transistor equivalent trouble shooting
    • Replies: 29
    • Forum: Solid State
  8. Jamessan

    2SC1649 Transistor equivalent

    Good morning all, hope you are all well. I have been looking at an equivalent transistor for a 2SC1649 and am finding some conflicting types. I researched and found a 2SC2632 and have also been informed that a KSC1845 will do the job. After researching the KSC1845 I found the hfe and the (pc)...
  9. M

    Realistic STA-18 Transistor Replacements

    I have a Realistic STA-18 receiver I was given by a friend that I'd like to repair. The transistors in the amp board are T1S92's, T1S93's, and T1S97's. Would it be a bad idea to replace these with KSA1845's, KSA992's, and KSA1845's respectively? Are the any better modern replacements for these...
    • MikeUlfs
    • Thread
    • realistic sta-18 transistor equivalent
    • Replies: 5
    • Forum: Solid State
  10. 4ever7

    Kenwood KR-7600 Power Amp transistors

    Just reaching out to the larger Kenwood community to see what people have done lately.....I'm in the process of restoring a Kenwood KR-7600 and am trying to find a replacement for various transistors on the Power Amp (X07-1450-11) board. When searching the forums, a lot of the recommendations in...
  11. Mrcoolest123

    Pioneer Transistor replacement

    hello! I just got a new piece of gear for my collection, a pioneer sa-710. Got for a nice price because the seller told me it didn't work and wasn't able to repair it. I have some knowledge on electronics so I took it as my project to repair it. I already found the replacements for the burn...
    • Mrcoolest123
    • Thread
    • help pioneer pioneer sa 710 transistor transistor equivalent
    • Replies: 2
    • Forum: Solid State
  12. marcthisdate

    Transistor identification question?

    I have a NAD receiver that while in the schematic shows a particular transistor with one identifier, the label on the part shows something different. Are these two functionally equivalent/interchangeable or is this a problem with the service manual being different then production?
  13. Yamaha5000

    Yamaha CA-1000 Transistor Substitution

    Seeking input to review this list to insure I have placed the correct substitute. Also needing other options that are not available
    • Yamaha5000
    • Thread
    • transistor equivalent yamaha yamaha ca-1000
    • Replies: 11
    • Forum: Yamaha
  14. I

    Best Replacement for C869 transistors in Circuit Protection for SA-7100

    So I ordered a bunch of caps and transistors a while back for a Pioneer SA-7100 amp. I had been putting off the cap job for a while until it recently started to have circuit protection issues. I had generated my parts list from the service manual, but when it came time to dig into the amp and...
    • ignis-fatuus
    • Thread
    • sa-7100 transistor equivalent
    • Replies: 1
    • Forum: DIY
  15. churchill127

    Kyocera A-710 restoration project

    Hello Akers, I recently bought a Kyocera A-710 integrated amplifier. This is a wonderful amplifier, but it needs a little love, I think there is a slight volume imbalance between channels. I want to restore the power supply and power amplifier boards beyond just a standard recap of all the...
    • churchill127
    • Thread
    • capacitor coupled integrated amplifier kyocera restoration help restoration project transistor equivalent
    • Replies: 2
    • Forum: Solid State
  16. Mightyhal

    Can't balance DC on SX-880 after repairs

    Following up on https://audiokarma.org/forums/index.php?threads/sx-880-output-transistor-replacements-b705a-2sa1075.961503 -- I've had some ups and downs repairing the SX-880 (I'd shorted part of the power supply with a probe slip, and one of the output chips had shorted--one which had been...
    • Mightyhal
    • Thread
    • 880 bias circuit dc balance dc offest sx-880 transistor equivalent transistor replacement transistor substitute
    • Replies: 6
    • Forum: Pioneer Audio
  17. W

    CS1676 and CS1677 transistor replacement

    So I am going to re cap and replace the transistors in a Realistic STA-76. I have found replacement caps and transistors for everything except transistors on the the main amp board and power board. They are FCS1676 and FCS1677, I have found a few old post on here with couple of different...
  18. joestcyr

    Alternative transistor list/ AU20K?

    Been doing a recap on this AU20K, which has been going(newbe) s-l-o-w. Now as I read on AK there are a lot of parts that the general consensus is-while your in there, you really SHOULD replace (fill in blank). Especially with transistors. I get the OEM, find mention of its recommended...
  19. J

    Sanyo DCX6000K restore - Transistor replacements needed!

    Hello everyone! I currently own a Sanyo DCX6000K with a problem in the main power amplifier section. This stereo receiver has two amplifiers (one per channel), one of which is giving random high volume noise spikes on the correspondent speaker while the other channel works perfectly. Some...
    • joocfpinto
    • Thread
    • sanyo transistor equivalent transistor replacement
    • Replies: 3
    • Forum: Solid State
  20. JayPare

    Transistor replacement (2SC828 and 2SC1685)

    Hi all, I'm looking for replacement for those to transistor for my project: 2SC828 2SC1685 I found the following replacement for 2SC828: KSC1815 (Digikey has KSC1815YTA, never sure what the letters at the end means) BC548BU (Digikey has it) And the following replacement for 2SC1685...
    • JayPare
    • Thread
    • amp repair japanese electronics transistor transistor equivalent
    • Replies: 2
    • Forum: Solid State
  21. Cergei

    Yamaha C-4 | Proper Transistor Replacements

    This unit had some issues such as randomly after some time of being working began to distort, and gradually being powered down. I changed all those VD1212 by pairs of 1N4148. After recapping this unit I bought 2nd hand in Argentina in 1997, I checked some of the transistors and I am quite sure...
    • Cergei
    • Thread
    • second hand transistor equivalent yamaha c-4
    • Replies: 31
    • Forum: Yamaha
  22. Strgazr1967

    Luxman M12 issues... Hoping for help

    I recently picked up a gorgeous setup consisting of a M12 amp, CX 101 Pre-amp and TX 101 tuner. MINT in every aspect. Powered up the unit and to my dismay there was no output from the left channel. I started the normal trouble shooting of swapping speakers, cables, checking fuses, swapping...
    • Strgazr1967
    • Thread
    • amp rebuild help needed luxman transistor equivalent
    • Replies: 5
    • Forum: Solid State
  23. Ray122

    Marantz 2215B Parts list

    Hey everyone! Working on a Marantz 2215B for a friend. It's in really rough shape. Power amp has a couple of blow output transistors, and the tuner section loads the power supply. Couldn't find an exact culprit in the tuner section, but I've come across at least one leaky diode. All the caps...
    • Ray122
    • Thread
    • 2215b marantz marantz 2215b marantz2215b parts list project repair restoration transistor data. transistor equivalent
    • Replies: 1
    • Forum: DIY
  24. Chris Dykes

    Transistor Replacements for Darlington/BJTs & Outputs Kenwood KA3700

    Hi All, I've done as much legwork as I can to identify good replacement options for the driver and output transistors in the nice little Kenwood KA3700 amp. I would love opinions on selecting the best replacement options. I see that NTE - while convenient - is often maligned as being low or...
    • Chris Dykes
    • Thread
    • darlington kenwood ka transistor equivalent transistor replacement vintage 70's kenwood
    • Replies: 17
    • Forum: Solid State
  25. Mike Sweeney

    HFE question

    I'm looking at two subs for the 2SD427/2SB557 NPN/PNP transistors for a Marantz 2285B. The specs on the two are the same ( 250 volts, 16amps, 4Mhz, 250 watts) except for the HFE rating. The OEM was >20 at 5 volts. One sub is 25@5 volts.. but the other recommended is 15@4 volts. So my...
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