SANYO M9935K Boombox Motor Replacement
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- Опубликовано: 10 сен 2024
- This SANYO M9935K was sent to me from customer for the restoration. The body showed signs of wear from its age, cracks on its back, tuner needle was stuck, cassette deck did not work at all. Many challenges ahead, however, I really enjoyed restoring this old school boombox.
The motor was broken, so I replaced it from another cassette deck. I needed to adjust motor speed, however, the voltage was way too high for this replacement motor. So I decided to use DC stepdown module to reduce the voltage.
Enjoy my another challenge to restore the vintage boombox.
NOTE: I wrote M3397K in the video, actually it was M9935K.
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had one of these back in 1985 bought it in New York , at the time the hip hop / high energy and rock sounds played on the radio sounded awesome through this unit. Laying in bed with it resting on your chest was the best way to listen . happy memories, wish i still had it .. if i remember rightly the handle broke at one end , the volume started to crackle , and it was chewing tapes .
Happy days
To Derec Coe, sorry I accidental erased your comment. Your original comment was "Speakers not worth an upgrade tho?", and my answer is it is worth to upgrade it. But I have a tendency to keep it original. For me, the original condition is the best.
an adaptor plug the thick 2-3ft cable Qtr in stereo to RCAs can be plugged into AUX IN of the home unit,the on board tuner & amp delivers great sound if a wee bit noisy in hiss,My unit suddenly had a frozen tuner/cable knob,took it apart,went to try adjusting it wi the unit open,worked perfectly DUNNo wtf,,put it back together it's fine
good
I listened to this model for 20 yrs. plus and had cassettes too.i miss those days.sad to say its no longer working except the speakers.. your repair is exceptional, i wish you were here somewhere near. Good job bro
Another nice repair with a BT update too. Thanks for showing how you did it.
Hi, Dan. Thanks for the comment and compliment on my video.
Excellent work. Main problem areas on these were the cassette mechanism and the switches.
Thank you for your compliment.
Excellent, as always Teddy. I'm presently restoring a 1976 Panasonic Music Center for a friend. They made those old ones to last, and be easy to work on. Alas, today's devices aren't so well made or easy !
Hi, River. 1976 Panasonic Music center, I checked image on google, seems like good looking one. As you said, vintage one has a nice style and with proper care they last long.
Thank you Mr. Teddy hashee love the video and I'm enjoying this radio still today it works fine 👍
Great job 👍 congratulations 🎊
I've got one of these beauties
Thank you for the comment.
@@teddyhashee my pleasure, I always liked boomboxes
New sub here.. thank you for the great videos... I bought same boombox online.. i wish i can restore it..
extraordinary success
Thank you Super Team!
How much volt motor is needed? I want to replace the motor in my m9935k but i dont want to have the correct voltage without having to use other components
Old video, maybe you discovered this problem already with using DC/DC converters in old devices like this:
1. Turn on radio and tune into AM or FM station
2. Press (record and) play, to turn on the motor (and DC/DC converter used to power the motor)
3. Listen what happen to the reception
Oops. Better use a simple voltage regulator like the 7809 in case of a 9V motor and a 12V power supply. It isn't effcient but it doesn't interfere with radio signals.
Great video loved it , have you ever thought about selling them once you repaired them?
I have sold most of the boombox I restored. They went all over the world and playing music there. Thanks for asking.
i get the same one today for 40 dollars look good only the cassette plays and stop any idea wwath is thanks
Great work!
Thanks again!
Very nice job Ted!! Although its actually a 9935k.☺
Hi, thank you for pointing out. Yes you are right. I just changed it to correct one. Thanks again.
Good Job Teddy👌👏👏👏
Thank you for your compliment on my work!
Great job man, I wish there are more people like you restoring them. I love the old boombox, they look awesome. What's the last song you played via Bluetooth? Thank you
Hi, thank you for your compliment on my video. The song name is Cuban Sandwich from Doug Maxwell, it is in the audio library in the youtube creator studio.
G'day fella. Scored yourself a new subscriber. Loving watching the videos.
Hi, thank you for your compliment on my video and subscribe. I believe you are also a great restoration guy!
Yeah I get older servers and find a way of putting them back into a production state and get more life out of them
Where can I find parts!? I'm working on a Panasonic 5010 and I need a new motor for the cassette deck! Any help is greatly appreciated!
ebay. It does not have to the same motor, you can just use similar type of the motor, and adjust its speed.
I've the same model. Only fm is working now. Need to repair. From Sri Lanka. 🇱🇰
很好的视频，我也有一台这个机器😄
Thank you for your compliment on my work.
I have the same boombox, and the problem is that I can't select the radio frequency (cause the string is miss) so.... what is the correct form to put the string in the wheel to select the frequency??? Thankss
Find the service manual for this boombox and probably you can find the diagram. But if you follow the pulleys, you will be able to figure it out how to set up the strings. I do most of the time.
Great bro
Thank you!
You in china? Great video.
In USA, thank you for the comment!
Boss can you install Bluetooth and USB in this music system
Hey,teddy cool boombox.Yesterday I get the philips 2205.
Philips 2205, late 60's classic cassette recorder. Great!
+Teddy Hashee Yes it's looks so great but my belt is broken and I need find new one.
I buy many different type of belt from ebay. The best one was round belt bought from Germany. Good luck to find good one for your cassette deck.
You'll find that the belts are the same as for a Philips EL3302, N2400,N2405, N2407 and other machines from Philips/Pye/Siera/Norelco that have the same arrangement of buttons. The EL3302 mechanics were adapted to a push-button design to make the machines easier to use. Some of the old Radiorecorders use the same mechanics too. Hope this helps. Try changing the pinch roller too, as the existing one is likely to have hardened over time, this can cause the machine to eat tapes. These, too, are available from Ebay.
well done, isnt it better repair The motor speed control circuit, than using converto ?
You are absolutely right. I should repair or I should replace old electronics component on the motor speed controller.
my uncle has this stereo boombox player
Great to hear that!!
You are cliver man
Thank you for your compliment. I am flattered.
Quiero radio así
I hope you will be get your own boombox soon!
Hi, where can I find service manual in pdf?
Buy from ebay, or you join the boombox forum and ask members. Usually someone has it and share with you or it is already uploaded members DL area.
Có ban ko?
You could send me the connection diagram of the bluethow is that the video goes very fast and you can not see the steps ... I would greatly appreciate that favor ... thanks greetings from Spain
Are you looking for this particular model for the wiring?
yes .. I have the same restored model I just need the bluetooth connection
send me email at teddy.hashee@gmail.com I will reply you with attachment jpg file
@@teddyhashee awesome work! ia have the same model SANYO M9935K, can you send me please also the bluetooth connection? i send you email, Thanks.
My dad had the same exact boombox , unfortunately i did not took care of it
Hope you will find the one again!
@@teddyhashee I just found one and I bought it !!!
Where can i get a boombox ?
garage sale, estate sale, thrift shop, ebay and other online selling places.
Looking for a reasonably price battery cover replacement if anybody has one to sell.
Why don't you do 3D printing for your battery cover. If you prefer ask someone to do the 3D printing for your boombox, I have a friend who do the great job.
2nd
Thanks for the comment.
Is that one for sale?.??
Hi, Pizza Man. Sold out. Time to time when I find a good old boombox, I restore them and list it on ebay. All electronics pictures I restored are on pinterest.
www.pinterest.com/teddyhashee/electronics/
Teddy Hashee darn that one I really liked
Check
www.estatesales.net/
you may find good boombox over there!!
Teddy Hashee ok
How did u remove the Knobs?
You just pull them out. If it's so hard to remove them, then you want to make small tool that will hook the edge of the knob and pull them out. I use paper clip ( bent back at an angle for catching the edge of the bottom ) to make my own tool. Some of the boombox video shows how to remove knob with this type of small tool.
Mabuchi Motor 9VDC (2400) RPM CCW: Argh, too fast!.
Thank you for the comment.
Am avut. Slab.
Nice job! i have a hitachi trk-6820h ,but it aways eats my tapes :( only the radio works.
And it looks just like this ruclips.net/video/m1JDxMc5S40/видео.html ,but that is not mine.
Remove cassette deck and clean it. It will work perfectly again. You might need to change the drive belt. Happy New Year!
Yeah i think the head is little dirty but the belts are brand new! and happy new year to you too! :)
If the belt is new, then you want to clean inside parts that contact cassette tape with lubing alcohol to remove sticky residue. That residue maybe the reason eating your tape. Also if your cassette deck needs more than 1 drive belt, sometimes that tension of the belt does not much for other, therefore, the speed and force difference between the take-up reel and supply reel will eat your tape too.
Thanks! i'm gonna try cleaning the head and if it dosen't work i'll just lisen to some radio! :)
Not only head but also pinch roller and capstan, all parts that tape film is touching, clean them completely probably that will be a good help for the deck. Sample image is here.
turtlesarehere.com/assets/images/Parts.jpg