Thanks very much, Trevor, for taking the time to share this excellent tutorial. My brother-in-law's CR2A had stopped working and I was having a devil of a time tracking down the problem. It had the same transport issues yours had and after following your steps and cleaning and lubricating the motor and worm gear, it's now working again. Great video.
Thank you SO much, i just performed the cam motor cleaning and relubrication on my nakamichi CR-1A after dealing with it only playing like 2% of the time for over a year. I was worried at first but your excellent footage and clear explanations of what you were doing and really made this repair possible for me. It works like it's brand new, i'm so happy to have my cassette player working again
Thank a lot, My CR-2E (from 1989) did not start playing, though Fast forward and Rewind did work OK. The lift returned to initial position after 2 tries. Just pushing the contacts a couple of times solved the issue. I only had to pull back the whole block, after releasing the ground connnection. Your video helped a lot and saved it from the scrapyard. Plays wonderful again. THis was my first investment in high-end HiFi
Excellent photography Trevor, no silly zooming in and out. There's so many little things that can go wrong with old decks - it's often a long chain of one repair/mod after another, but we often do get there!!! I don't know about you, but I can spend 10, 20, 30, 40 hours and more on one deck alone - repair or rebuild can be a process of one step forward, followed by one and a half backwards! ;o) Regards and thanks for the video.
Yeah, decks are not my favorite things to fix. So many details to keep straight in the head. Miss a step and I have to disassemble half way to correct it. Parts are hard to get or impossible. When done they all sound mediocre to me. Thanks
27:27 - I think you certainly know that usually in almost all motors of this type, there are on the outside of this white plastic piece, two holes where a thin wire must be inserted in each one in order to move the brushes away from the center of the shaft, allowing you to install the armature without the collector interfering with the brushes. That's the easy way but I don't know if this motor has those holes. 58:07 - This motor is diferente it has justo one ripped hole that serves to separate the two brushes from the motor. Thanks for the nice video.
What a quality build nakamichi made in those days. I had the one that automatically could turn the cassette. Also transformers build in if there was a new cassette deck made I bet they used switching pcb instead of transformers. Much cheaper but crapy powersupply.
1:04:30 Van Halen!!! :) Pity you didn't show the last test you mentioned. Could you suggest me a grease for plastic gears of dvd-bluray player especially for the bars where the laser head glides and a more viscous for opening mechanism? I guess the former is the same you used for motor shafts and bearings. thank you
Please bore me with the calibration process, I'd like to see it done for real. Also would like to see the reel motor removal and serviced like the other two. Great video!
Thanks for this extremely informative video! I have a bunch of old Naks that are in various states of disrepair. Where did you get that sliding belt measuring tool? That was cool.
Thanks for this video: I’m about to do the same on a Cassette Deck 2 but I haven’t marked the cam gear position before I’ve tested with low voltage to check if working. How do we know the cam gear position? Only doc I could find was for a BX-2 which I hope is the same for the CD2 but can’t figure out if Cam0 should be the inside or outside mech facing.
hi...great vid..how do you get direction spindles off to repair motor...?? not a single vid shows replacing that motor. can't figure out what lets them loose
Wonderful video! I was wondering how the W&F was with the new belt? I have 2 CR-1s, and one just developed the same problem which brought me here. Thanks for taking the time!
Thanks, I have no way to measure W&F but my tuned ear meters tells me it improved a bit. Old belts will harden and have a memory from sitting in one spot for years and develop a kink that will be noticeable when playing tapes
@@TrevorsBench Thanks for the reply. I have a friend whose a tech, and has a W&F meter, but I'm very sensitive to bad W&F, and can usually tell listening to a pre-recorded cassette with piano music. The reason I asked, is because with Nakamichi decks I've read that some of the replacement belts available today don't perform to the original factory specs. I guess It doesn't really matter if it's not noticeable to the listener.
I don't understand the speed test with the oscilloscope? If I got you right, you fed a 3khz signal to the deck, recorded and replayed it. Then you tuned the speed? But if you fed it a 3khz signal and recorded it on a tape going slightly too fast, wouldn't that still play it back as 3khz? I thought that's why people use commercial tuning tapes where the cassettes tuning signal was recorded on a calibrated deck according to an industry standard. Or am I missing sometihng? I'd be glad if you could clear up my confusion
Hi, I bought the 3Khz speed tape and I'm trusting it was recorded on a good deck, sorry I always forget to mention that part. You're right, if I recorded the test tones they would be inaccurate
Excellent video! I found this video searching for info on this deck. I pick mine up in two days for $100.. Guy says it plays fine but I know what to do in case it doesn't.
Is there a source for new or rebuilt motors? I checked mine out, and one of the brush contacts had fallen off. The control motor that drives the cam is the one that I need to find.
Nice work ! but after all Nakamichi older models have bad elektronics and that Sankyo under level transport , but Nakamichi is most advertised name isn't it ,
Where to adjust the speed ? Directly on the engine with a small screwdriver ? I would have liked to see how you proceed on the engine to regulate the speed.
Since the golf war, nano mites are affecting folks working with electrics. Some how this pest is attracted by magnéticas. His hands reflect what seen on others. But could be a sign of what is stated.
Thanks very much, Trevor, for taking the time to share this excellent tutorial. My brother-in-law's CR2A had stopped working and I was having a devil of a time tracking down the problem. It had the same transport issues yours had and after following your steps and cleaning and lubricating the motor and worm gear, it's now working again. Great video.
Thank you SO much, i just performed the cam motor cleaning and relubrication on my nakamichi CR-1A after dealing with it only playing like 2% of the time for over a year. I was worried at first but your excellent footage and clear explanations of what you were doing and really made this repair possible for me. It works like it's brand new, i'm so happy to have my cassette player working again
Nice to hear your Nakamichi is back and running. I'm glad you found the video useful, thanks for watching. Cheers
Wow, you weren’t kidding about it being a big job! Thanks again for the patience and perseverance, it sounds amazing! Better than I ever remember.
No problem, glad to hear you enjoy the deck
Geez Trevor, I’d never remember all these steps in putting it all back together again!
見事ですね。できるだけモーター分解はしたくないのですが、特にダブルキャプスタン機はモーター修復は必要ですね。 VANHALEN のテープもいいですね！！ これからもナカミチを大事にしてください。
Thanks for your comments and watching. More Nakamichi coming up!
Great info thanks. You're very skilled.
Great tips on motor disassembly/reassembly. Nice work!
Thank you
Thank a lot, My CR-2E (from 1989) did not start playing, though Fast forward and Rewind did work OK. The lift returned to initial position after 2 tries. Just pushing the contacts a couple of times solved the issue. I only had to pull back the whole block, after releasing the ground connnection. Your video helped a lot and saved it from the scrapyard. Plays wonderful again. THis was my first investment in high-end HiFi
Excellent photography Trevor, no silly zooming in and out.
There's so many little things that can go wrong with old decks - it's often a long chain of one repair/mod after another, but we often do get there!!! I don't know about you, but I can spend 10, 20, 30, 40 hours and more on one deck alone - repair or rebuild can be a process of one step forward, followed by one and a half backwards! ;o)
Regards and thanks for the video.
Yeah, decks are not my favorite things to fix. So many details to keep straight in the head. Miss a step and I have to disassemble half way to correct it. Parts are hard to get or impossible. When done they all sound mediocre to me. Thanks
27:27 - I think you certainly know that usually in almost all motors of this type, there are on the outside of this white plastic piece, two holes where a thin wire must be inserted in each one in order to move the brushes away from the center of the shaft, allowing you to install the armature without the collector interfering with the brushes. That's the easy way but I don't know if this motor has those holes. 58:07 - This motor is diferente it has justo one ripped hole that serves to separate the two brushes from the motor. Thanks for the nice video.
Thank you so much. I manage to repair my old CR-2 following your video. Great work!
Thanks for your wonderful video it helped me immensely to repair mine.😁
Glad it helped, cheers
Great and informative video. Enjoyed watching it!
Thanks Dennis
What a quality build nakamichi made in those days. I had the one that automatically could turn the cassette. Also transformers build in if there was a new cassette deck made I bet they used switching pcb instead of transformers. Much cheaper but crapy powersupply.
You can use Superfloss to get the hole of the capstan cleaned
Excellent idea, thanks!
ha, thought the same ............dental floss through the shaft !
That was very good. (I hope that I can emulate this on my Nakamichi CR-1A) which is currently exhibiting similar symptoms.
Thanks again
1:04:30 Van Halen!!! :) Pity you didn't show the last test you mentioned. Could you suggest me a grease for plastic gears of dvd-bluray player especially for the bars where the laser head glides and a more viscous for opening mechanism? I guess the former is the same you used for motor shafts and bearings. thank you
You have Skills my man. Enjoyed your presentation.
Great video Trevor, thank you. Can you kindly share the part number for the belt, please? I have a CR-2A that needs a new one.
Great repair!
Thank you for such an informative diy.
Thanks for watching
Please bore me with the calibration process, I'd like to see it done for real. Also would like to see the reel motor removal and serviced like the other two.
Great video!
I'll keep your comment in mind next time I dive in.
Thanks for watching
Great video.
Thank. Splendid video. Very well explained.
Thanks for this extremely informative video! I have a bunch of old Naks that are in various states of disrepair.
Where did you get that sliding belt measuring tool? That was cool.
Would like to know this too!
Thanks for this video: I’m about to do the same on a Cassette Deck 2 but I haven’t marked the cam gear position before I’ve tested with low voltage to check if working. How do we know the cam gear position? Only doc I could find was for a BX-2 which I hope is the same for the CD2 but can’t figure out if Cam0 should be the inside or outside mech facing.
hi...great vid..how do you get direction spindles off to repair motor...?? not a single vid shows replacing that motor. can't figure out what lets them loose
Hello Trevor , what kind of lube do you use on those mechanical piedes/shafts............?
Very nice 👍🏻❤
Wonderful video! I was wondering how the W&F was with the new belt? I have 2 CR-1s, and one just developed the same problem which brought me here. Thanks for taking the time!
Thanks, I have no way to measure W&F but my tuned ear meters tells me it improved a bit. Old belts will harden and have a memory from sitting in one spot for years and develop a kink that will be noticeable when playing tapes
@@TrevorsBench Thanks for the reply. I have a friend whose a tech, and has a W&F meter, but I'm very sensitive to bad W&F, and can usually tell listening to a pre-recorded cassette with piano music. The reason I asked, is because with Nakamichi decks I've read that some of the replacement belts available today don't perform to the original factory specs. I guess It doesn't really matter if it's not noticeable to the listener.
Great video, how much would you charge for this service? I have a nak cr 3a with similar issues
I guess one of my decks is suffering this fate. If I had a fraction of your skills and knowledge I could fix it. :(
I don't understand the speed test with the oscilloscope? If I got you right, you fed a 3khz signal to the deck, recorded and replayed it. Then you tuned the speed?
But if you fed it a 3khz signal and recorded it on a tape going slightly too fast, wouldn't that still play it back as 3khz? I thought that's why people use commercial tuning tapes where the cassettes tuning signal was recorded on a calibrated deck according to an industry standard.
Or am I missing sometihng? I'd be glad if you could clear up my confusion
Hi, I bought the 3Khz speed tape and I'm trusting it was recorded on a good deck, sorry I always forget to mention that part.
You're right, if I recorded the test tones they would be inaccurate
Well done! I hope my CR-1E
won't need similar Service 🥴
Excellent video! I found this video searching for info on this deck. I pick mine up in two days for $100.. Guy says it plays fine but I know what to do in case it doesn't.
At 32:02 you put grease on the worm gear. The container says "HX". What is the brand of grease that you are using here?
It's just a generic synthetic grease I purchased on Aliexpress
Is there a source for new or rebuilt motors? I checked mine out, and one of the brush contacts had fallen off. The control motor that drives the cam is the one that I need to find.
Go to Aliexpress and search for mini DC motor. You'll find lots of variations for small motors. You should be able to find one that fits
Please tell me nakamichi Cr 7 control Motor is same in nakamichi Bx 100 or 125
Nice work ! but after all Nakamichi older models have bad elektronics and that Sankyo under level transport , but Nakamichi is most advertised name isn't it ,
Where can you purchase the belts.
There is a tiny hole at the back of the motors right in the middle of the motor cover. can you lub the back bearing from there?
No, don't all oil there. The hole is access for the speed adjustment
Where to adjust the speed ? Directly on the engine with a small screwdriver ? I would have liked to see how you proceed on the engine to regulate the speed.
Yes, there is a little hole for a small flat screwdriver
what product are you using for lubrication?
Synthetic grease, any brand will do
Looks like heart surgery to me.🙂
You need to have blood test, you have liver spots on hands. Sign of poor diet or too much drink.
Since the golf war, nano mites are affecting folks working with electrics. Some how this pest is attracted by magnéticas. His hands reflect what seen on others. But could be a sign of what is stated.