yamaha

  1. 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...
  2. 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...
  3. 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...
  4. 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...
  5. 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...
  6. 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...
  7. 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...
  8. 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...
  9. 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...
  10. 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...
  11. 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...
  12. 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...
  13. 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...
  14. 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...
  15. 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...
  16. 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...
  17. D

    Another new guy!

    Hello. I am looking forward to this group.
  18. 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...
  19. H

    Yamaha C-4 dc fluctuation

    Has anyone got a Yamaha C4 in which the DC maintains a stable readout within + /- 200mV of 0mV? If so, how close to 0mV has been achieved? And did any component(s) need replacement to achieve this? My understanding is that it’s actually very common to for this preamp to produce the full range...
  20. Saint Johnny

    CR-1020 Needs Some Minor Help

    Hello all, So I just picked up a 1020 that has some minor issues. Bulbs out, channels cutting in and out, dirty switches, etc. It seems like nothing major at first, so far. I can not find all that many troubleshooting threads here, other than the one or two from Rob. Any tips on problem areas...
  21. H

    C4 preamplifier dc fluctuation

    My C4 is sounding great but despite replacing the trimpots with Bourns the dc fluctuates quite energetically between -170mV and +180mV. Occasionally it will even stray further by another 100 or 200mV. Thoroughly checked all solder joins, switches cleaned etc. My question: are there any...
  22. B

    Yamaha A-1000, A-700 PSU Modification - Complete Basic Solution

    As a continuation of the thread: https://audiokarma.org/forums/index.php?threads/yamaha-a-1000-can-i-remove-the-whole-vertical-phono-board-and-everything-else-will-still-work.962306/#post-15203392 I've decided to develop a complete basic solution for power system modification in Yamaha A-1000...
  23. JB8

    Yamaha CR-620 - Right Channel Popcorn Static

    Acquired a CR-620, my first after a series of 400's and 420's, fun to get to know a new model! This particular unit had a bad output transistor, blowing the main fuse, so I upgraded/replaced all 4 with MJ21193G's and MJ21194G's, which solved the problem, but now I have persisting popcorn static...
  24. JB8

    Yamaha CR-420 Dead Tuner

    Picked up a CR-420 that initially tested fine across the board - tuner, phono, Aux, etc. But then the tuner stopped working all together - no led's, no signal meter movement, no sound on AM or FM. Now, it didn't just die, it kicked and screamed a bit, I thought it was dead, then it came back to...
  25. H

    Metal film resistors- Yamaha A1

    Need to replace some 1.5Kohm resistors in the Drive board of a DC coupled Yamaha A1 amp. Originals were carbon, anything inherently wrong or risky in using good quality metal film resistors which I have in stock?
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