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yamaha cr-820

  1. Z

    Yamaha CR-820 relay not clicking!

    Hey! I have a Yamaha CR-820 that I don’t get any sound from. The unit powers up fine and the lights and everything else seem to work but the amplifier section seems to be blown. No fuses have blown but the relay doesn’t click. The output transistors doesn’t seem to be shorted and all four reads...
    • ZanderTibell
    • Thread
    • no sound yamaha cr-820 yamaha cr820
    • Replies: 11
    • Forum: Yamaha
  2. Snow_

    Yamaha cr-820 relay not clicking, where to start troubleshooting?

    Hello folks, my yamaha cr-820 had shorted output transistors on the left channel, due to a broken piece of plastic allowing a short to the heatsink. I fixed that by replacing both of the left channel transistors and now the 68ohm fusible resistor doesnt burn up on me anymore. But neither does...
    • Snow_
    • Thread
    • help receiver troubleshoot yamaha yamaha cr-820
    • Replies: 18
    • Forum: DIY
  3. JB8

    YAMAHA CR-820 Relay Clicking On/Off

    Issue: At start up the relay would click on and off sporadically without any manipulation Troubleshooting Steps: Checked to see if pressing on/manipulating the protect circuit relay would help, it did not Checked voltage at TR-801 and got roughly 57V DC on ECB. In different, similar thread, I...
    • JB8
    • Thread
    • cr-820 relay clicking relay replacement yamaha yamaha cr-820
    • Replies: 4
    • Forum: Yamaha
  4. Boston Tom

    (HELP) Yamaha CR-820 blown lamps

    Hi All, Just grabbed this CR-820 for short $$ but as I was doing a few voltage tests to see why lamps weren’t working found that I have .5v across L1-L4 saw that there is supposed to be close to 30v or so. Also the 12vdc test points are measuring 26.5VDC probably not connected. Thanks for any...
    • Boston Tom
    • Thread
    • yamaha cr-820 yamaha help yamaha tuner
    • Replies: 3
    • Forum: Yamaha
  5. AngelAT

    Yamaha CR-820 Repair

    Hello Yamaha fans, Today I finished the repair of my Yamaha CR-820. The guy I bought her from said that she is not working - someone tried to repair her but could not. One transistor was missing and a resistor was unsoldered from one end. The guy also gave me the spare lights that he had...
    • AngelAT
    • Thread
    • 2sd427 and 2sb557 problem yamaha cr-820 yamaha repair
    • Replies: 8
    • Forum: Yamaha
  6. C

    Polk audio Monitor 10/amp

    I recently bought a redone pair of Polk Audio Monitor 10 series 2. These are beautiful, you’d think they are brand new!! My question is around powering them. I have 3 different options and wanted to get some opinions 1. Yamaha CR820. (55w/ch at 8ohms) 2. Yamaha AX-490 (85w/ch at 8ohms) 3. Harman...
  7. Red_Raider

    My Yamaha Receiver Collection

    This is my Yamaha Stack. I know everything looks just a bit cramped. I specifically situated it this way just for this picture. The speakers are normally a bit further apart from the receivers. Anyway here's what I'm currently rockin' my vinyl with: Denon 23f phonograph on top Yamaha CR-820...
  8. Red_Raider

    Best speaker recommendations to use with Yamaha CR series receivers

    Got a CR-820, 2020, and about to put my hands on a 2040 that should be at my door any moment now. My question: What speakers would you recommend for these receivers? I tend to listen to classic rock (mostly 1970's era, but also some before and after), along with a little bit of country here...
    • Red_Raider
    • Thread
    • speakers - suggestion yamaha cr-2020 yamaha cr-2040 yamaha cr-820
    • Replies: 39
    • Forum: Yamaha
  9. Red_Raider

    INTRODUCTION - RED RAIDER

    Hello, and greetings everybody. And thank you for having me. I go by the handle; Red Raider. I am in my mid 40's, and grew up listening to classic rock records as a teenager. I've spent most of my adult life serving my country. I worked around avionics for fighter jets, so I am relatively tech...
    • Red_Raider
    • Thread
    • cr-2020 cr-2040 cr-820 introduction vinyl records yamaha yamaha cr-2020 yamaha cr-2040 yamaha cr-820
    • Replies: 19
    • Forum: Introductions
  10. Ramblerman

    Yamaha CR-820 worked for a day

    I just picked this up on eBay. It worked great and sounded great for a day. I came home from work the next day and it wouldn't turn on. I took the case off and found the main fuse was blown. I replaced the fuse and crossed my fingers. About 2 seconds after pushing the power button, the fuse...
  11. R

    Overprotective Yamaha CR-820

    Hi. I picked up a Yamaha CR-820 a month ago and thought I had fixed it three weeks ago but...nope. When I got it, I had power, no relay click. Read some threads here, downloaded schematic, parts list and service manual Replaced capacitors on main power board, output transistors and built up...
    • rauridh
    • Thread
    • diy yamaha cr-820
    • Replies: 16
    • Forum: DIY
  12. erikd

    Custom wood case for a Concept receiver

    Hi AK gang, I have recently been digging into the wonderful world of vintage audio, and I have found myself with a handful of receivers. I've got a Concept 2.5, a Concept 4.5, and a Yamaha CR 820. I love them all in their own way :) But when it comes to looks, I am crazy about the Yammie...
    • erikd
    • Thread
    • cabinet cabinet design concept concept 2.5 concept 4.5 walnut cabinet wood wood case yamaha yamaha cr-820
    • Replies: 13
    • Forum: General Audio Discussion
  13. Maxxarcade

    Yamaha CR-820 Transistors

    I'm working on a CR-820 that has some hiss in the right channel. Seems to be coming from the tone control board. Are there any particular transistors I should consider for substitutes? Here are the originals: 2SC1917 2SC844 2SC1213 There is also a pair of the infamous 2SC458 in the idle...
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