cr-620
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CR-620 stuck in protection
Received a CR-620 in non-working condition, found the output transistors shorted and replaced all four. The unit now powers on but has no audible relay click. I read ~20 V or so on both R775 and R776 with the new transistors installed. Still getting DC voltage on output transistor emitters -...- falsefruit
- Thread
- cr-620
- Replies: 23
- Forum: Yamaha
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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... -
Gear Pairing
Hello AK, once again I emerge from my lurking to ask some advice on my next audio purchase. As some of you may remember, I purchased a pair of JBL 4410's in June of last year. I have been powering them with an interim Pioneer SA-1060 I had laying around from an old system I built in high...- CharlieG
- Thread
- cr-1020 cr-620 cr-820 help jbl jbl 4410 receiver upgrade yamaha
- Replies: 7
- Forum: General Audio Discussion
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CR-620 FM Mute Issues
Long time reader, but first time member to AK. I need some help with my CR-620. Like other folks, I obtained this Yamaha for the spare change in my pocket at a garage sale. Bought it mostly because of the way it looked. It has been my trusty garage unit for some time, and I recently decided to... -
CR-620 Radio Problems
I just recalled my entire Yamaha CR-620 today and I got everything back together to find my FM sounds horrible, even when connected to an antenna. Also when I have the FM muting ON I still hear the static of the radio. Looks like I must’ve screwed something up. All the other inputs sound amazing... -
Yamaha CR-620
What is the best way to clean the faceplate of my Yamaha CR-620 without removing the black labels aka volume, bass.- tazman3276
- Thread
- cr-620
- Replies: 3
- Forum: General Audio Discussion
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CR-620 Troubleshooting
Hello all, first-time poster but (relatively) long-time lurker here! I just picked up a CR-620, and I plan to restore it and gift it to a close friend. Unfortunately, the receiver was DOA. Here are the particulars: It powers on, The red faceplate LEDs light, The incandescent lights do not... -
Yamaha CR-620 Overheating...
Hey all, Setup: Yamaha CR-620 Yamaha YP-211 2x Legend Audio Speakers - 8ohm 100w Max Yamaha YST-SW45 (Active Powered) My Yamaha CR-620 Receiver started to overheat and I cant seem to figure out why... I first noticed a smell coming from my A/V setup about 4 months ago but it soon went away... -
Why am I underwhelmed by my MCS -> Yamaha receiver upgrade?
You AK folks were a great help to me about 3 years ago when I was trying to put together my first turntable setup. After hitting up garage sales, estate sales, and thrift stores, I wound up with a combo that was by no means anaudiophile's dream, but still pleased my ears (I listen at moderate...- Kooranga
- Thread
- cr-620 mcs solid state yamaha
- Replies: 33
- Forum: Solid State
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CR-620 Stuck in Protection Mode
Gang, I'm the original owner of a CR-620. Never over-worked, and always treated well. The only maintenance performed on it during its life was to clean the pots with Deoxit in attempt to fix "scratchiness", which worked perfectly. Turned it on in August 2018 and, low and behold, the output... -
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Help with CR-620 Blowing Main AC Fuse - Outputs Good
I have a beautiful CR-620 that HAD bad outputs. I replaced all 4 outputs with MJ21193/94 and recapped the power supply section. I used a dim bulb and powered it on. The unit was repaired and worked well for a few weeks... After running it for a few weeks, the main AC fuse (3.0A 250V) blew...
