I love fixing things, and old audio equipment has the perfect balance of electromechanicalness, repairability, and cheapness. I am an amateur at this and any advice is welcome. I hope you enjoy.
I also have an Etsy store where I sell some of the parts I've created. hifijam.etsy.com
Nice job ! I have this casette deck and i have a little problem. Has no sound , no vu meters signal . i look inside and there 4 transistors missing on the main board and a resistor is burn to crisp. I dont know what models are those transistors and what value that resistos has. Can you help me with that ?
Great video. I just purchased a AKA M9 to restore and will reference your video as I proceed. I do have a question. When I remove the back I see two slots where cards were removed. Can you tell me what those two cards are so I con look for replacements?? Thank you..
The flat motors are called direct drive motors. Sony DD walkmans have that and some turntables have that too (instead of belt drive). I'm just surprised to see dedicated direct drive motors for each spindle.
Very useful vid! Do you know what motor can fit for a replacement? Looks like it's a 6VDC, 2200 RPM, CW, but in my C-205 is labeled with a Marantz part code and I can't find the exact match with Mabuchi or Matsushita. Thanks a lot for your work, not easy at all to find good vids about this model.
Interesting how yours needed so much mechanical work. Mine needed not that much at all, apart from the usual belts, cleaning and a new pinch roller. Came to me in very good condition and with very low hours, likely stuffed down the bottom of a linen cupboard for 40 years until the original owner died. However the electronic side needed serious work, many of the capacitors (incl for the motor) were weak and needed replacing and major work was needed on the record / replay switch. Now works perfectly. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-pLwZRDR3IaE.html
My brother had the version (TC560 instead of TC560D) which had the speakers and built in amp. My only issue with it was the slow rewind and "fast" forward functions. Very good specs, especially when we used the Sony SLH-180 low noise tape.
I used 8 track recording when I was a kid and I still have an Olson Electronics deck from 1974 that still works. Realistically (no pun intended), when it changed programs on a tape that you made continuously, there would be about a 1 to 2 second bit of mostly silence that actually sounded like a dropout. As far as sounding better than a cassette, just like anything else, it's subjective. If you have a really good cassette deck, chances are that would sound better than the 8 track. To me the 8 track doesn't quite have the dynamics that other formats do. I think the biggest hindrance is the tape formulation. They never really improved the tape formulation by much but the cassette did improve immensely. The 8 track tape moves at 3.75 inches per second and the cassette is half that speed at 1.875 inches per second. I believe the track width is exactly the same, if not very close. The cassette tape is 1/8 inch wide and the 8 track tape is 1/4 inch wide. The cassette utilizes 4 discreet tracks and the 8 track utilizes 8 discreet tracks. You did an incredible job on the repair of it. 1979 was definitely a long time ago, but I still remember it. I hope you get many years of enjoyment out of it.
The word for a 'temporary fix' is a bodge, a cludge, dodgy, she'll be right, good enuf, wok n roll, hot pockets, a Spinal Tap reference, enjoy Mr NAD. PS a little light oil on the chassis, rear incl inputs wiped off with a cloth stops degradation from oxidation. I oil up my bike, electronics and even myself, olive oil, sorbolene, sewing machine oil 🛢️ cheers.
As U probably now know the bridged connections on the rear panel seperate the pre and power amps. It's so you can get access to pre out and power in separately. You may pre out to a different / larger power amp. You may just want to utilise the power amp from a different pre amp source eg external phono pre amp, any line output. After all it's an integrated amp, meaning both the pre and power amps are in the same box. Thirdly, as U suggested, U may want to do some signal processing inline between the pre out and power in. Also gives you access to the pre out, like tape monitoring, eg taking it into a mixer or PC software etc. A good feature all NAD integrateds have that I have seen. The new NAD stuff now uses smaller links that are insulated. Back to the video, cheers.
Damping cylinder: you need to clean it and grease it with tubing o-ring silicone grease. The swing arm usually drives the take up reel. The leaf foil springs seem to actually be clutch pressure plates, the hubs should have integrated slipping clutches. I've never taken one completely apart except I own one which is in my up for sale inventory. If you ever lose one of those plastic clips it can be a good idea to save a suitable plastic sheet and get some punching tools: you drill a hole of a desired size in your plastic sheet and punch a disc around it. I've come to the conclusion it is the best way to deal with it, there are too many sizes and no parts supplier that I know of. The electronics is very complete and cleanly laid out, the sound is very pleasant must be due to their tweaking of the EQ... not sure it is accurate but definitely Nakamichi.
About oiling the pinch roller pins: they were not lubricated from the factory. The combination of materials make it already a dry bushing itself as it was also the case with several examples of dry plastic/metal couplings e.g. rear capstan shaft. If you oil it you need a very small amount to seep in. Mineral oil while it can stay is not suitable for long term application on plastics, Ideally you could grease it and it could be very appropriate since it could handle up to 500 grams but in the long run it will dry up and tend to jam the bearing. It could technically benefit from high quality PAO lithium grease but if one spends 15 bucks on a cassette decks I highly doubt that is on the list.
They both look amazing on you Beautiful Lady!❤ I prefer the second bra. Gorgeous in both!❤ One without the lace really looks more comfortable!❤ Piont being you look Gorgeous in any bra!❤ Thanks Gill!❤
This was initially a playback only format for the car. Recorders only started to show up later in its lifecycle when cassettes started to overtake 8-tracks in popularity. Only a handful of models were made by a few manufacturers and were generally higher end & more expensive. So no, they weren't very common at all and cassettes still absolutely smashed them in sound quality and noise reduction. In the world of tape, the cassette truly was king.
Wow, do I wish you were nearby to do work in my equipment!!! You are good, and maybe I could follow suit, and fix/clean my own audio electronics….. thank you… fun to watch and learn!
Great job fixing a cool vintage film camera! Bolsey, the man, has quite a notable, and prominent history, in photography & cinematography ….. worth checking out online! As a film camera collector, it was fun to watch this! Thanks
Hey from Australia. In my opinion, printed circuit boards are no ones friend. Yeah they're great in low power units like separate Tape Decks and Tuners that don't pull a lot of current etc BUT in amplifiers, especially vacuum tube amplifiers like I own (Primaluna HP Integrated Amplifier running 6 12AU7s on the preamp side and 8 KT120s on the output side) ventilation is essential. Primaluna valve amps run point to point wiring and any PCBs are low power that run their adaptive auto bias which is not in the signal path. All of the valve sockets are attached to the chassis with pencil sized holes around each socket to keep the amp cool. As soon as I saw a Primaluna HP Integrated Amplifier, I had to have it. $7,000 later and nearly 8 years later, it still sings and no more multi meters to check the bias of each of the 8 tubes. NAD have a strange setting on the back labelled (soft clipping). I've forgotten the logic behind it. I'm 63 and have been around electronics all my life. I'm an analog studio/visual enigineer and I was a club DJ over a 30 year period. Cheers for now Andrew Collins, Melbourne Victoria Australia.
Can anyone tell me if changing a belt can peoduce an annoying hum from the player during tape play? I changed out a 6.1" square belt to a 6" round belt and the player has a higher humming sound. What's that about??
