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- เผยแพร่เมื่อ 14 ต.ค. 2024
- A Harmon Kardon drawer loading cassette deck; I got it 'for parts or repair' on eBay for $20. I thought it would take more effort to get working judging by the number of screws that were missing, someone obviously had a go at it before.
I can't find much information about this cassette deck online, at least in the usual places, and I have very rarely seen one with a CD-like drawer mechanism. It adds fair bit of complexity to the deck, and they've packed it in quite tight, most other decks I have taken apart have lots of open air inside the case, but not this one.
And yes, I have replaced that wire with an appropriate resistor, it needed a 4.7 Ohm resistor. Adding it simply reduced the vigor of the motor as it pulls the cassette in.
Did not even know that thing existed, so many parts and components, must have been a bloody fortune back in the day.
I love the smell of old electronics
This was always such a unique and interesting design. I always felt like it looked special and different from the rest. The one thing that strikes me as odd is that the eject mechanism seems so fast and clunky. It should have been a slower, soft operation. Great job getting this sucker working again!
That coil/spring loading mechanism is criminally done.
I love how you very nervously pressed the power button. That exactly my technique too, even after I've repaired something, lol.
I’m usually more nervous after repairing something haha
@@HifiJelly Lol, same here. I've even been known to wear thick rubber gloves and cover my ears while pressing a power button after I've done repair work. I've yet to have something go bang or give me a shock, but there's slways a first time. 😬🤣
The HK 705 series was used in American Psycho, except for the CD player which was a Pioneer PD-340.
The Fresh aroma of new arriving audio equipment. I've watched this several times. That always makes me laugh. I totally relate.
I have that same deck, along with 720 turntable, 710 tuner, 725 pre-amp, EQ-7 equalizer and the 770 amp. Still working pretty well.
I definitely enjoy the videos when you talk better. Are brains think alike and your sense of humor adds a lot to the experience
Crazy loading system but nice eye impression .
I brought to good operation two Telefunken cassette decks made in 1979 and then made experimental music recordings from radio. Used cheapest maxwell tape available in ninetees - ferro type, almost not used, no noise reduction switched. The result in my system and wtih my speakers is as good that I do not know how I will listen now to my CDs - I like more sopranos from deck.
It is nice that ypu started to speak in your future videos.
Sounds like the heads are in correct azimuth and good condition.
Great restoration! I was really wondering how you were going to get that mangled loading mechanism working again.
Holy patience messing with it! 🙌
Love watching repair videos. I have a Sony Elcaset that could benefit from your talent. Would you be willing to take care of it for a reasonable remuneration of course ? Thank you
Good looking deck. Hellishly complex mechanics. Plus: head demagnetitzing/cleaning is next to impossible without dismantling the set: horrible! Nevertheless: you're a hero!
Thanks, for cleaning the heads, the small hatch on the top of the deck that I replaced would probably work, but that's a good point as far as head demagnetizing, since I'm not sure a demagnetizer would fit through and reach the heads.
Have you considered reloading this video with a voiceover to explain what you did?. Enjoying your content.
I haven’t considered that but it’d probably be pretty easy to do.
nice deck. Awesome. Thanks for the good work.
Glad you like it!
Das muss 💘 sein......
Was für eine Reparatur
Wish there was audio explaining everything.
That resistor is probably used to drop the voltage going to the motor so the action of the drawer or tray mechanism isn't so fast and abrupt. I would put a substitute back in place for sure. The other question is why did the 1st resistor blow in the first place? There must have been a lot of current being pulled by the motor at some fail point for the resistor to smoke like that especially since the motor is only intermittently used. What a nice unit. Great job!
Thanks!
@@HifiJelly I might be tempted to put in a self resetting fuse ( a polyfuse/PTC) in place of, or as well as the resistor. If you don't know the original value for the resistor, then just use a polyfuse.
For the fuse value, measure the current when the motor runs normally. Double it. That should put you in the ballpark for a suitable value to limit the stall current of the motor.
As to why the original resistor blew.. That's its job. If the motor binds up, it produces a high stall current, and the resistor blows and protects the motor driver circuitry. The motor stalled when all that spaghetti and spring mallarky let loose.
Speaking about what you are doing would make for a MUCH more interesting video!
I’ve heard that from a few people, and I’ll try that for the next one. Thanks for the suggestion!
such an aesthetic, whole video !
very nice job....from indonesia
Thanks!
cool deck man, good job on the repair. i would be a little concerned about that resistor though; usually resistors don't "just blow up," especially such modern ones. high probability that there was a short in there somewhere, or that the motor itself is shorted
Motor was likely stalled and didn't switch off to the failing mechanism, causing higher than usual currents
@@solwidotnl stalled motor will result in increased load?
@@briangoldberg4439 The stall current of a typical DC motor is several factors higher than the free running current. The resistor might not have been designed to handle it. If this was indeed the case, the failing resistor might have saved the motor from becoming defective (as the insulation of the motor coils can eventually melt due to the excessive current).
@@briangoldberg4439 the mechanism behind this (which solwidotnl enlightened you to) is that the electromagnetic happenings cause the impedance to rise after the initial rush-in that causes the motor to start. They are self regulating in this regard. When they're stalled, there's no electromagnetic flux being dissipated though motion, which causes no change in impedance and... rather quickly a change in physical structure instead :)
i have a Sansui cassette deck with me. Still working connected with JBL L Series speakers, All more than 40 years old
my brother in law had the 3 head version of this loading system. i recorded lots of his vinyl using it.
Cool deck, nice video, thanks!
I wonder how you managed to repair that complex loading system. Great repair!!! 👍
Hello I recently bought this deck, and I was wondering if you know what the dimensions of the belts are. I'd rather not pay $45 for a belt kit off of ebay lol, and I think I could probably purchase belts with the same dimensions from a different site for cheaper
On a separate note you did an amazing job on this repair, and I'll definitely be using it as a reference~
Thanks! If you’re in the US I use vintage electronics.net to get belt kits. It’s like $25 bucks there. Otherwise I don’t know the actual belt sizes.
@@HifiJelly thank you!
Hello from Canada. Thanks for your video. I picked up a hk705 recently and would like to use your video as a guide for belt replacement. What size of belts did you use? Thanks
I bought a belt kit online, here's a link to the one I got: www.vintage-electronics.net/harmankardonhk-705.aspx
@@HifiJelly thanks for the info. I spotted that company, but the delivered cost (in CAD) was triple the amount I paid for the deck. I will try to get something local. Thanks for your help.
Stunning!!!
éste modelo no lo había visto, yo conocí HARMAN KARDON a partir del TD 4200, y TD 4800, y la última creo, no sé exactamente pero creo que contaba con el Dolby S, aunque reconozco que los dos decks grababan muy bien 👍
super very nice work 👍
Excellent sounding machine
E stato fatto un'ottimo lavoro,modello molto bello,gran suono.marca eccellente
Grazie!
The record level knobs are almost identical to the volume control on Sansui C-77 preamp..
Great work, are you going to repair the eject system at some point?
Thanks! The eject mechanism is working fully; it’s not like a CD player where the eject button will pull the drawer in. The button here is fully mechanical, it simply releases a catch and the drawer gets shot out via springs. It is surprising though since i don’t think it would’ve have taken much to just add a switch to that button that activates the motor and pulls the entire drawer in.
@@HifiJelly
Thanks for responding.
I feel that I should point out that the mechanism is supposed to open with much less energy .
At least, the HK705 that I once owned did.
@@HifiJelly
The attached video shows how the mechanism functioned on the deck I once owned ...
th-cam.com/video/IFjgRhoc6Qo/w-d-xo.html
@@assistantto007 Okay that’s really good to know thanks! It did seem pretty violent on eject haha, I’ll need to look and see if their is some kind of dampening part broken, or maybe the springs need to be coated in grease. Not sure.
very nice job
Thank you very much!
Very nice Crazy'Loading system and trpkal mknezm very nice video grafi 🎥 Super
Thanks!
7:50 the point at which I know I would never be getting this back together. It would remain broken .... forever.
So the cassette is basically reeled in by a piece of string? It's very Heath Robinson.
Great job!!!
Thanks!
КАКАЯ ЛАЖА , А НЕ ДЕКА .... НЕ МОГЛИ ЧТО НИБУДЬ ПОЛУЧШЕ ПРИДУМАТЬ...???🤔🙄😌
It's a quasi-clon of the Pioneer CT-3000 mid-component with changes....
The mime repair man ! Better start talking soon or your over for me !
“perfect dolly shot “ got me 😂😂
Esse deck é made in germany ?
Show my friend
So good !
Thank you!!
👍
厲害啊！👍
謝謝!
cool deck
Modern machine with terrible construction. And how to align or clean head?
I had the same deck, but under the “Silver” make.
x2
Nice gear
Good
👌👏👏
really ace like all your vids but Plz add voiceover otherwise it feels like AI a tad 🙂🙃😉
Do you want to fix my Sony TC-FX77? 😁
I much prefer the videos with you speaking..
*THE GUYS MANUFACTURE A DEVICE OF THAT TYPE, RENOWNED BRAND, WITH THIS HORRIBLE TAPE PULLING SYSTEM. PULLEY/SPRING AND CORD.*
👋🤩💘👍💘🤩👋
You only needed to study how to open the bottom to get to the belt assembly. You would have saved yourself a lot of time. Now I'm no expert,yet I have had my share of tape deck repairs.
Actually not a very dependable tape deck🧐 way better unit's from that time ✌️
Would be a better video with voice over explaining what you are doing.
It's HarmAn...
Haha I can’t believe I haven’t noticed that yet.
test song name
Himiko Kikuchi - Flying Beagle
It’s the first song on the album
Deixe de gracinha e faça um video sério
Nostalgic stupidity.
Sub
no speaky speaky
Watching this video for the fourth time now 😅 🫡👌🏼
Maybe HK was good in schematics but mechanical part is piece of crap.
CAN'T WATCH THIS ONE. THIERS NO TALKING. VIDEOS HAVE TO HAVE SOUNDS ITD MORE IMPORTANT AND INFORMATIVE THAN THE VIDEO
*IT IS DISAPPOINTING AT LEAST. NOT TO SAY IT IS A BIG CRAP.*