• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

nikko

  1. mcaddie7

    Nikko NR 1019 Channel Issues

    Howdy all, So I have a Nikko NR 1019 that has been giving my troubles. After some time, the right channel will drop out. Now I've troubleshot this to be up to the Amp board as the receiver has a Pre Out / Main In jumper on the back. Both L/R Pre Amp signals go through the Left Amp fine, but...
    • mcaddie7
    • Thread
    • channel cut out channel cutout channel failure channel issues nikko nikko 1019 nikko nr 1019 receiver solid state
    • Replies: 1
    • Forum: Solid State
  2. A

    Nikko Alpha III 8 ohm to 4 ohm

    hi i have a nikko alpha III it is 8-16 ohm Rated buuuut i just figured out later in the nikko production they did something to make them 4 ohm compatible i know this because a guy is selling one and had some but not much useful info if anybody knows anything please announce it i´d be have happy...
  3. R

    Nikko Beta 40 relay not click. Need help.

    I bought Nikko Beta 40 pre amp and the seller said it is working. But its not, but i dont want send it back since its hard to find. I think the relay is not clicking. Trying to isolate, is this what i do is correct? I pull the bridge rectifier D801 and D802 except to the relay which is D803. I...
  4. mosfets

    Nikko Beta II preamp re-cap work

    I bought a circa 1978 Nikko Beta II preamp from the internet. The local seller said he was the original owner(he would have been under 10 years old when it was new). The cord was cut and extended, butcher job. Someone took it apart and put it back together with the facial grommet missing from...
    • mosfets
    • Thread
    • beta ii nikko preamp recap and restoration
    • Replies: 2
    • Forum: Solid State
  5. JamesWest...

    Nikko TRM-1200 Amplifier (1970) Repair Questions

    Hello all, I have what seems to be a bit of a rarity; A Nikko TRM-1200 preamp-amplifier (approximately 1970). Which I am having a couple of issues with. First, the VU meters seem really insensitive. They move a little if I turn on the loudness switch. Any thoughts? As a note: I did replace...
  6. 60 Cycle Hum

    Nikko NR-1050 defaults to radio when powered up. Help? User Manual?

    My Nikko NR-1050 defaults to radio when powered up. Is this normal? Can I change it so that it it powers up where I left it? I don't have the remote. I found a service manual but no user manual. Can anyone hook me up? I just put it into service after my old Onkyo integrated blew up last week.
  7. CrazeeD

    Nikko Alpha 450 Noise

    Hi all, me again. Still trying get the noise out of my Nikko Alpha 450. I have posted about this problem and had some great suggestions offered, the problem however persists. As a recap, this unit had a bad main filter cap (there are 4) that had leaked and was no longer making contact with the...
  8. CrazeeD

    Nikko Alpha 450 noise

    Hi All, having a weird problem with a Nikko Alpha 450 power amp I'm working on. I've posted here before regarding this amp and the suggestions were invaluable. I've re-capped the power supply as 1 of the big filter caps had leaked and wasn't even making contact with the board. The amp sounds...
  9. CrazeeD

    Nikko Alpha 450 buzz until warmed up

    Hello All, I have a Nikko Alpha 450 power amp that buzzes until warmed up (10 min or so), after that its quiet and sounds great. It's not a crazy loud buzz but it's certainly enough to annoy. A little backstory, I have recently replaced 1 filter cap as it had leaked and wasn't even making...
  10. CrazeeD

    Nikko Alpha 450 replacement relay

    Hello All!! I'm currently working on a Nikko Alpha 450 power amp. It has a dead speaker switch relay, I know it's bad because I've switched it for its partner (speaker A B situation) and the other works fine. The coil seems dead. It's a Takamisawa MAT 2B-119H. I'm having a little trouble...
  11. rocksy

    Ranking Equipment Obscurity through Tiers

    As my interest of all things Nikko continues to...exist, I’ve come across a few pieces of equipment that I have never seen any real world proof that the product ever even existed. I thought I’d put this post together to point out some products that have caught my interest. Given the history of...
  12. JoeMae416

    Nikko, dbx, Nakamichi, Denon, Akai, Ohm

    My current system.
  13. crayonbox

    Hello from Western Iowa

    Hi there, Here's a long intro :) I have been in and out of this forum for years through web searches and am now devoting more time to my hi-fi setup so I'm naturally riddled with questions that seem to be best answered here... So it was time to join! For the longest time I used a Marantz...
    • crayonbox
    • Thread
    • b&o b&w bang olufsen marantz nikko pioneer rotel system audio tannoy vintage
    • Replies: 23
    • Forum: Introductions
  14. D

    NIKKO NR-719 Power Amp Distortion

    Hello all, First post! Schematic here: https://www.hifiengine.com/manual_library/nikko/nr-719.shtml I have a Nikko NR-719 that passes signal through both channels, but the left side is distorted when pushed, especially with lots of bass. I don't have a scope but characteristically, it...
  15. S

    NIKKO NR 1019 swing meters

    I am iso the swing meters for my NIKKO 1019 receiver. I need all 4. When I purchased it (good price) they were not functional, none of them. I think it may have been dropped. Fortunately this is the only issue, everything else is on good shape. Great receiver by the way and I want it to be in...
  16. OneMixDJ

    Question for restorers with Nikko experience

    Greetings, I own a TRM-600 that needs a replacement push switch (Speaker A). I found a TRM-800 for parts and was wondering if the push knobs are the same size/diameter. They appear to be; but I would like an answer from someone who has owned and/or worked with both. Thanks! Kindest Regards,
  17. T

    Nikko Alpha II repair help needed!

    Hi all! This spring I picked up matching set of silver faceplate Nikko gear for a reasonable price but one channel of the amp makes a loud popping noise every few 5-10 seconds. One local shop was unable to fix the issue and the other is unfamiliar with Nikko gear and won't touch it. I have...
  18. K

    Nikko Alpha 230 In Protect Mode

    Title pretty much says it all. I purchased a nikko alpha 230 power amp off marketplace as is since it seemed to be in very good shape and not abused but when I tried to turn it on at home instantly the protect light went on. I checked visually if there were any burnt resistors and fuses but no...
    • Kevin6860
    • Thread
    • alpha 230 nikko power amplifier protect mode
    • Replies: 14
    • Forum: DIY
  19. P

    Nikko STA-5010 - please help identify bias/dc-offset trimmer pots

    Hi, I bought a Nikko STA-5010 and need to adjust DC offset. I see 2 pairs of trimmer pots on the amp board but cannot really tell which ones adjust bias and which ones do DC-offset. I would like to avoid mistakenly touch the bias pots as I usually have problems readjusting them later on. I...
  20. T

    Diagnosing problem to repair vintage amp

    I hope I'm posting this in the right forum. I recently acquired a nice stack of Nikko separates (Alpha II, Beta II, Gamma I) and the amp has an issue. I am hoping to narrow down the likely culprit before just replacing all the capacitors. I tested the amp by connecting it pc > preamp > amp >...
    • Tinsleysboy
    • Thread
    • amp boards nikko repair help
    • Replies: 7
    • Forum: DIY
  21. mozcho

    Nikko TRM-120 - info needed

    Hi all. Picture shows a vintage Nikko TRM-120 vintage integrated amp. This model is so rare that I can't find any specs nor service manual other than a little bit from here: https://insidehifi.blogspot.com/2012/12/nikko-trm-120.html If anyone have any info at all on this model, please kindly...
  22. mozcho

    Nikko Solid State Stereo Amplifier - Identity

    There is this amp available in my area, but it only says "Nikko Solid State Stereo Amplifier", no model number is given. If you know the info like model and specs, please let me know, and how's the sound quality. Thanks.
    • mozcho
    • Thread
    • nikko nikko solid state stereo amplifier
    • Replies: 15
    • Forum: Solid State
  23. S

    Nikko Alpha II / Adcom GFA 535

    Recently picked up an Adcom GFA 535 for pretty cheap to power my Nikko Beta II pre-amp, which I really like. The Adcom sounds good. There's now, of course, the matching Nikko Alpha II available locally, for about 4x what I paid for the Adcom. Is it worth going for the matching set?
  24. Krosya

    MW - I love my underdogs!

    Just like many of us here, I like to seek out and try out different items - be that speakers, tape decks and of course - receivers/amps. Of course, there are Big Boys club members - Pioneer, Sansui, Yamaha...And I have a lot of respect for those, but often some smaller brands are being...
    • Krosya
    • Thread
    • great receiver montgomery ward nikko optonica pioneer sansui
    • Replies: 8
    • Forum: Solid State
  25. S

    NIKKO SOUND SYSTEM, SET UP HELP!

    My mom was going to throw this out, but I thought I'd to learn how this works. It's been in the attic for over 20 years now, but not sure how to get this all working again. The back is a mess and I do not know where to begin. I know nothing, but really eager to learn. Photo(top to bottom)...
Back
Top Bottom