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yamaha

  1. kuene

    Lag/synch issues with HDMI Audio Extractor

    There was a thread a few years ago covering this, but it didn't have any resolution. I used to have a first generation Apple TV - which had a built in optical out for audio. I would run this output into my two channel Yamaha and use my stereo for movies/music (turning down the TV speakers...
  2. H

    Yamaha C4 preamp fault. Hum. Phono switches.

    Have done a lot of work on this preamp and am starting a fresh thread because several faulty components have already been replaced or repaired and am hoping it may now be much easier to isolate and identify the problem. The issue: Hum is present on all inputs. -Playing vinyl on Phono 1 and 2...
    • Hifibythekg
    • Thread
    • earth ground hum hum noise preamp noise preamp yamaha yamaha c-4
    • Replies: 116
    • Forum: Yamaha
  3. H

    Yamaha C4 - zener diode WZ130 - Power C Board

    Is the correct replacement for a WZ130 located at D503 and D504 on the Power C Board this? ONSEMI 1N4148TA Small Signal Diode, Single, 100 V, 200 mA, 1 V, 4 ns, 4 A https://uk.farnell.com/on-semiconductor/1n4148ta/diode-ultrafast-300ma-100v-do/dp/2322485?CMP=i-bf9f-00001000
    • Hifibythekg
    • Thread
    • c-4 preamp yamaha zener diode
    • Replies: 34
    • Forum: Yamaha
  4. R

    Yamaha CR-400 Repair Begginner!

    Hi all, I have an old Yamaha CR-400 tuner that I picked up in university almost ten years ago at a Salvation Army, it served me well for many years, and I had it serviced once about 3-4 years ago. Last time I hooked it up, a bunch of the bulbs had burnt out, tuning wheel was giving a weird...
    • ryo_g
    • Thread
    • cr-400 diy repair yamaha
    • Replies: 5
    • Forum: Yamaha
  5. H

    Dual JFET- 2SK100 - Yamaha

    Can anyone tell me how, or direct me to a page, that explains how to test a dual jfet? I want to test the 2SK100’s I have in my Yamaha C4 and A1 with a DMM. Apparently, if they’re working well, they’re interchangeable. However, I have issues in one channel in each amp and confirming their...
  6. H

    2SK100 is there a replacement

    Is there an available replacement for the 2sk100 double jfet? Have read that a pair of matched 2sk170-V will work. Can anyone confirm this or suggest a better or alternative solution? One of the 2SK100’s in my Yamaha C4 preamp may be faulty..
  7. H

    Varistor VDT 1212 Yamaha C4

    Just want to check whether this photo shows a VD 1212 varistor, next to its printed symbol on the pcb, facing the WRONG way? It’s currently residing in a Yamaha C4 preamp on the Function Board. Also, what’s the best way to test these components out of circuit.. a DMM or a cheap transistor...
  8. A

    I need advice on a new amplifier…

    Hello, my name is Assen. The current components I have are: Dali Zensor 5 Marantz PM 6010 ose Topping D50s Onkyo DX-1400 Sony CDP-XE 330 I like the sound of the Marantz PM6010ose, but I think the Dali Zensor 5 may sound better. I am considering replacing it with Marantz PM80 or Marantz...
  9. Wagonmaster1

    Are passive speakers destined to sound less "forward" than active speakers at low volume?

    I recently got into high-quality audio, and my first set-up has been a set of Yamah NS-8s along with a Yamaha RX-V490 receiver. At first, I was excited to hear what my set-up would sound like, but I was soon disappointed by the lack-luster, "far off" sounding music that resulted. It was nothing...
  10. S

    Yamaha CR-2020 TR707 / TR708 mounting

    Are the TR707 and TR708 emitter pin correctly depicted on the Yamaha CR-2020 relay board diagram? That is to say, does the black pin on TR707 and TR708 correctly identify the placement of the transistor emitter? Leaning on Oilmaster's wonderful diagram description on his post, the rightmost...
    • SharkBait07
    • Thread
    • cr_2020 rebuild restore tr707 tr708 transitor yamaha
    • Replies: 3
    • Forum: Yamaha
  11. Mike1767

    Cr-2020 Troubleshooting

    I have recently brought home a 2020 from my parent's basement that I am hoping to bring back to life. Growing up, it was my Dad's pride and joy, but it has now been sitting unused for too long. I am half decent with a soldering iron and multimeter and can read a circuit diagram, but I can't...
    • Mike1767
    • Thread
    • cr-2020 protection circuit issues relay solved troubleshooting yamaha
    • Replies: 18
    • Forum: Yamaha
  12. B

    Sony CDP-C9ESD... anyone have experience with one?

    Picked up one of these as a gamble at the local thrift a week or so ago for $15 is more or less excellent condition - even came with the oem remote with nary a scratch or wear mark on it.. had to buy the xa-10b 10 disc magazine on the bay as it didn't come with one. just got that in a few days...
  13. H

    Yamaha wafer switch disassembly limits - C4 preamp

    When disassembling these to thoroughly clean them.. can one remove the circular contact that sits on the black plastic centre piece with twelve studs? Is it ok to bend up the copper contacts to remove everything for cleaning and then bend them back afterwards for retensioning? Or should a more...
    • Hifibythekg
    • Thread
    • c-4 preamp input selector phono ground wafer switch yamaha
    • Replies: 21
    • Forum: Yamaha
  14. JB8

    Faceplate & Knob Cleaning & Polishing: How do you get it done?

    DISCLAIMER: There may already be an extensive thread (or many of them...) around this but I didn't see it, so thanks in advance for your contribution! Always good to have an updated version of best practices. For some context, I started working on project receivers at the beginning of the...
    • JB8
    • Thread
    • faceplate glass harman kardon 330c knobs polish realistic sta-78 yamaha yamaha cr-420 yamaha receiver
    • Replies: 15
    • Forum: Solid State
  15. Will_Emanuel

    Another Yamaha C-2a Restoration

    Hello all, wanted to go ahead and provide some documentation on another Yamaha C-2a restoration. This unit was brought to be with the notorious popping issues that seem to plague these units. At the time I wasn't entirely sure just how deep I'd need to get into this unit, so I started with a...
    • Will_Emanuel
    • Thread
    • c-2 c-2a c2a yamaha yamaha c-2a
    • Replies: 17
    • Forum: Yamaha
  16. W

    Yamaha YP-211 Anti-skate weight?

    I have a new to me Yamaha YP-211 with a Ortofon Red stylus. The deck needs a new belt which has been tricky to find and it doesn’t have the anti skate line or weight on it. I was thinking about getting some fishing line and a few different sized fishing weights or small metric nuts as the anti...
    • wraunch
    • Thread
    • anti-skate speed issue yamaha
    • Replies: 0
    • Forum: Turntables
  17. D

    Relay 981-2A-24DS in Yamaha R-S500

    The relay has the usual issues - kicks in if vol is increased, one side is weaker than the other and sound is somewhat distorted on the weaker side. I tried to wiggle the cover loose in circuit as I've done with other older amps but after trying for a couple of days, decided to desolder it...
    • d2e8b8
    • Thread
    • 981-2a-24ds relay yamaha
    • Replies: 4
    • Forum: Yamaha
  18. amr2

    Yamaha MX-1000 Faceplate

    Hello I have fixed several MX-1000s, but have never owned one. I decided to add one to my collection :D. I received it this week. Its in very good shape. Original manual, a single owner, and never repaired. Good. But the packaging wasn't very good, and the courier company hit the package...
    • amr2
    • Thread
    • faceplate mx-1000 yamaha
    • Replies: 0
    • Forum: Yamaha
  19. J

    What do you guys think these speakers have?

    So, I found these Yamaha's HS50m speakers in my local FB market and the seller is asking 190 US dollars for both. However, one speaker seems to be damaged on the cone and I don't know what it could be or if it would make the speaker sound bad. The seller says that they sound totally fine and...
  20. JB8

    Yamaha CR-620 Channel Drop Out

    Fresh off the heals of a great repair on an HK 430 Twin, I'm back at it with another CR-620. Unit was very dusty upon arrival, cleaned interior and Deoxit pots, etc. Looking much better. Before dusting I did a quick test to establish a baseline and found two issues: Slight amount of...
    • JB8
    • Thread
    • channel drop out volume control yamaha yamaha cr-620
    • Replies: 8
    • Forum: Yamaha
  21. Timothy Flath

    Yamaha CR-2020 Repair Project

    Hi folks Have started in earnest to attempt repairing a Yamaha CR-2020 that was completely dead. Started with the obvious Power Supply board issues that I have seen posted on YouTube and decided to start with a full electrolytic recap (except the large filter caps) of the Power Supply Board and...
    • Timothy Flath
    • Thread
    • cr-2020 power supply problem receiver repair vintage yamaha
    • Replies: 20
    • Forum: Yamaha
  22. H

    Ground hum, Yamaha C4

    Have nearly tracked down the source of a constant loud hum. Think it’s the Phono MC input.. So, am wondering what should I especially check in the area of the Phono MC RCA inputs and pcb? Some background: Inserting a shorting plug into the MC Phono inputs has a modest effect on the volume...
    • Hifibythekg
    • Thread
    • earth ground hum ground issue yamaha yamaha c-4
    • Replies: 36
    • Forum: Yamaha
  23. H

    VD1212 on Yamaha C4

    Checking these. With one leg lifted should they read Diode test : 1184 Ohms: 5.61M ohm With leads reversed, (Black lead on black end, red on red red end of diode) on the DMM at 20M ohms it climbs to ‘I’ I know these things have a dreadful reputation but just wondered if this one was...
    • Hifibythekg
    • Thread
    • 1n4148 c-4 diode vd1212 yamaha
    • Replies: 47
    • Forum: Yamaha
  24. D

    Another new guy!

    Hello. I am looking forward to this group.
  25. T.O.S.

    Epos for Yamaha ?

    Hello I have a pair of Epos M5 speakers on stand by and I am looking for a second system , based mainly on streaming , I was thinking to the Yamaha amps and Receivers ( not decided yet if it's going to be a 2.1 or surround ) but I am leaning towards the R-N803D receiver ,wich can be used as a...
    • T.O.S.
    • Thread
    • epos m5 yamaha
    • Replies: 0
    • Forum: Yamaha
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