Yamaha cr 2020
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- Опубликовано: 24 июн 2024
- The Yamaha CR2020 is a monster of a receiver, not the friendliest to work on and the schematic is far between. I just wanted to throw that out there. Now for the receiver itself is powerful and the sound is awesome, more that you will ever need is a home, this receiver is pushing 100+ watts per channel.
As long as you take care of a few capacitors, and you manage to clean the potentiometers that are well hidden, you should be fine... 
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I think I've seen all of your videos. I worked on copiers for 40 years and I've had some major repairs but this Yamaha looks like an absolute nightmare to work on. That's why the world needs people like you!
Yes, you have made me re-think about possible projects as a hobbyist . Sometimes better left to those who have the coconut to fix them. Nice training vid. Thank you.
Good to see a new video Joe! Great work as usual.Those monster receivers have got to be a challenge to work on. Complicated as hell. I've learned a lot from you already such as setting the bias, DC offset, and power meter calibration. Don't worry about making the videos too long and fast forwarding and skipping shots. .The longer the better when you are trying to learn this stuff. Thanks for all you do.
I restored a CA-1010 and a CT-1010 Tuner. I did a full recap and the bloody wafer switches were the biggest issue I faced. Cleaning them of oxide was the hardest task made easier by a hakko desolder pump. The weight of the unit was also a challenge. Reflowing solder joints was also necessary. Good news is after setting the idle currentit runs like a dream. I run 2 usb powered computer fans over the vent and it runs cool in Class A...quiesent current be damned. I own 6 yamaha amps and all of them have dim incandescent bulbs. Some swap to led, but I find them cheesy. 🧀 🧀 🧀 😅
High percentage of failing caps in Yamaha. I replaced all capacitors in my CA-1010 and low hfe 2SC1213A as well and mine work great after. Nice video, thanks!
Ya, I find that heat will cook those E-caps every time. What a monster unit.
I'm starting to figure out your in circuit cap test - it's just a resistance test at some frequency?
Nice find on those issues.
The dental picks are great, I get the good ones from my dentist when they are done with them.
EDIT: If there's no hole in the pots or I can't get to the hole, I take a small drill bit and hand drill a hole - you can keep the plastic shavings up in the drill if you're careful.
EDIT02: I like your videos for some reason. I think it's your easy manner, you're not shouting and you show little mistakes that always happen. Well done.
There are service bulletins for the CR-2020 capacitor board, check it out while you have it apart. GL!
That long shaft is there for a good reason. That's in the phono stage, very low signal level, so they keep the switch as close to the inputs as possible to avoid any noise picked up by long wires.
Great comment.
Exactly...all of the Yamaha CR's have these linkages. I always check the u-joints on my Yamaha...it's a car thing.
Great job Joe! I'm very happy that the humming noise was fixed with replacing caps on power board. No more humming noise. Very clean nice sounding receiver now. Thanks again!
Glad to help
That one just takes too long.. i guess I'll stick with easier to work on models. Nice job Joe !!
That quick-connect looks like it's on borrowed time.
i would like to speak to you to find out if i could send you my pioneer CT f50 tape deck to have the belts changed thank you if you can let me know i would really appeache that
Leblancmedicjo@gmail.com is my email
Not a tech friendly unit, for sure.
Wow. That whole receiver is a big fat disaster. It could be really nice though.
I've got many vintage receivers in my collection but don't have nor do I ever desire owning a monster receiver.Nope.Nadda.Zip.Zilch.Zero on that!!