The PCM54HP chip is the 16-bit DAC, made by Burr-Brown. Unfortunately some 30+ year old plastic parts can become quite brittle. The broken part looks like it's part of the cam gear that operates the clamp, and is very probably unobtanium.
@MegaBobsel
2 жыл бұрын
That's not a vacuum display, tho, just a back-lit LCD screen. That's what's the bulge is for, to spread the light. A vacuum display is pretty flat. Technology Connections has a video about it: The VFD that isn't
@stanleycostello9610
2 жыл бұрын
You gave it your best shot. I don't understand how CD's work. Records have a groove and a stylus which makes sense to me. I have a vague idea about tapes. But CD's? Nah...
@georgierockwood2355
2 жыл бұрын
I still have my Scott CD player from the 80's which I still use til this day as my CD player....cd's is still my #1 go to choice for audio format,,then 8track & then vinyl....
@Trance88
2 жыл бұрын
Brittle plastic syndrome I think is the culprit here. Those gears are ALL plastic and they're definitely slipping/grinding. I'd love to get one of those first gen CD players with the little viewing window.
@therafman4150
2 жыл бұрын
Great video. The problem is the belt. Over time the belt without operation remains an oval shape and when trying to spin it won't because it is oval. So once you replace it with a circle belt it will once again work properly.
@michaelturner4457
2 жыл бұрын
Actually it's not belt on this one, it's a broken plastic cam gear that operates the clamp. And that cam gear also presses the limit switch, that tells the player when the CD drawer is in the home position. That's why the drawer loading motor keeps grinding away when the drawer is in, and chewing up the teeth on the plastic cogs.
@JayH7745
2 жыл бұрын
Vintage stereo equipment will last a long time. My entire 1985 Kenwood component system looks and works like new. The turntable dust cover has no scratches on it even. I've kept a hand towel over it for nearly 37 years now. The entire system was $600 plus new in 1985. I still have the receipt from Nebraska Furniture Mart where I purchased the complete system of Kenwood turntable, amplifier, AM/FM tuner, cassette deck, optional single drawer CD player, two huge heavy 3-way Kenwood floor speakers (10" woofers in each) and a glass door Kenwood audio cabinet. I also own a newer large Sony home theater system in my livingroom and a Sony stereo system with the new automatic Sony bluetooth turntable in my smallest bedroom.
@Recordology
2 жыл бұрын
Awesome!
@yuriykorotkevych8838
2 жыл бұрын
One thing you shouldn't do for sure, I think - that is to apply brute force to open the drawer. Afaik, they are designed to lock mechanically in the closed position, and there should be a way to unlatch the drawer before opening it manually. Also, the drawer not wanting to stay closed, even right after the power has been applied, seems to me like an oxidised end switch that should tell the circuit that the drawer is closed. Possible cure for that is to apply a shot of contact cleaner and work out the switch a bit manually.
@kellygarrett320
Жыл бұрын
I am interested in buying the CDP 391 on EBay. I found one in good shape etc., however I noticed on the back it says made in Malaysia. All the other Sonys of the same model I’ve seen says made in Japan. Does this mean the Malaysia one is a fake? Should I not buy it?
@swinde
2 жыл бұрын
I have a Sony CD deck from about 1984-85 that is a CDP-302. The CD deck in mine is built much better than this one. The drawer slides on aluminum tubes and works very smoothly. I have had to clean and re-lubricate the "tubes" a couple of times, but the cd deck works perfectly otherwise. The neat thing it uses a linear motor for track selection and works very fast. This deck was made before CD-R disks were available but it will play them as well. It also supports "index" selections which I think is for classical disks that have different movements within the pieces. The only CD I have that has this feature is an Aerosmith's "Pump".
@ronaldweed6103
2 жыл бұрын
Never give up like me, I'm getting a NAD 538 new. I have not mechanical magic. I respect you for trying
@douglassmith5232
2 жыл бұрын
I seriously doubt if that's a genuine Sony product I think that's more of a licensed unit with Sony branding it looks like a old Fisher unit I used to own
@faithless8888
2 жыл бұрын
Hi there! I don’t think the display is a florecent display. I think it’s actually an LCD display (number sigments only) with a backlight (that’s whats in the white housing) 🙂.
@TorontoJon
2 жыл бұрын
What a bummer. It's too bad that Sony CD player was not working properly.
@57snador
2 жыл бұрын
I know this sounds dumb but on the bottom of the chassis was there a transport screw? When moving and in shipment these were to be tightened so the laser didnt become loose.
@jmi5969
2 жыл бұрын
9:30 - these are the heat sinks for the power supply regulators. Yes, quite uncommon to see them in copper rather than aluminium - copper was Sony's quirk from the 1970s. 10:20 - by 1987 they already did quite a lot to miniaturize and cut costs. The first-generation CDPs used separate processor and ROM chips for transport control - these were quite quickly replaced with all-in-one controller chips. Another thing that was already missing by 1987 was the arrays of potentiometers for fine-tuning the controller-to-transport interface. 14:20 - It's not this dangerous. Just keep an eye on where the mains wires and the input lugs of the power transformer (here, these are covered with clear plastic shields - nice, Sony!).
@gregsmith9183
2 жыл бұрын
Nice video. Love watching vintage audio gear videos. Got my first CD player back in 1987. Also a Sony but from a mini system with separate CD player. Current daily CD player is an Onkyo DX-C390 - 6-Disc carousel CD changer with MP3 playback.
@paulblackman8159
2 жыл бұрын
I bought a Sony CDP-302 on eBay last month. Similar problem it opened and closed fine, but it wouldn’t read and the mechanism that moves the laser isn’t smooth. I got suckered in by the retro. Anyway. I found a Sharp brand DVD player that plays CDs relatively normally most importantly with the garden variety buttons. The only con is that it only has a five digit display so you get track times but not track numbers. Plus it doesn’t weigh as much as an elephant.
@georgeprice4212
2 жыл бұрын
I got my first CD player Christmas of 1987, along with a new table top stereo, ffrom Montgomery Ward. (It was branded Montgomery Ward, but was actually apparently made by Fisher!) The CD player gave out in '90, which is when I got my first five disc player.
@peacearchwa5103
2 жыл бұрын
As you mentioned, in the 1980s Sony products were highly-regarded for product quality. Much like Apple products today, in the '80s Sony electronics were priced higher than many competing brands. In Audio Magazine's 1987 Annual Equipment Directory (Oct. 1987), the CDP-21 featured a 16-bit processor and 2x oversampling. MSRP was $270, which was a "value" entry-level player with some cost-cutting. I have three entry-level single-disc Sony CD players from the early '90s; all three functionally operate quite well.
@macrodriguez5697
2 жыл бұрын
The problem with vintage audio is always find parts. You can get rubber bands, motor, capacitors, even 3D printed gears, but on a CD player what you will never get is a new laser. You can get a few models on China stores but not for every model. Restoring CD players is almost impossible when a laser lifespan is 50 to 80 thousands hours.
@Tuggle
2 жыл бұрын
The worst thing for any vintage audio or video gear with moving parts is to sit unused for years. The lubricants dry out and the belts either turn to goo or lose their pliability. Also the gears on some of these units develop hairline cracks which throws them out of sync.
@louoldschool7047
2 жыл бұрын
dry rotted plastic parts. on that note, my technics turntable is 40 yrs old and works fine
@mauritsvw
2 жыл бұрын
Luckily most turntables have less that can go wrong mechanically than CD players or cassette decks.
@josephmay4937
2 жыл бұрын
Hello hope you are doing well love your videos
@Batout13
10 ай бұрын
Maybe is a Quo hater😂. Well, i had one since 1987, and the only fault was that the display turned off, and a sporadic faults with the tracking, solved with a brief adjustement. Aniway, do you know where the analog audio output is? (If exist). It is very high. A hug from Madrid.
@robertkeefer1552
2 жыл бұрын
"He's dead Jim"
@plan7a
2 жыл бұрын
It was a valiant try, there are a few things you could have tried. 1: Look for manual/simple schematics online (via radio museum or other site?). 2: See if someone else is doing a repair on KZitem? Have a look at VWestlife's video again, to see just how similar it is? 3: Lens cleaner? 4: Most CD players - at least modern ones - have a release clip for trays, useful when they get stuck. 5: Try carefully spinning stuck CD to check motors and for belt issues? 6: Gently push down the clamp; when there was a CD in the tray? You could use cotton buds to try and turn the gear rather than fingers; with or without the cotton on it. There are other things also, these are just some ideas. (Alternatively, it may be possible to find another one and use the working parts for it?).
@AndyP126
2 жыл бұрын
Burr Brown PCM54 DAC
@stefanegger
2 жыл бұрын
every part has some function or what would be the reason to put it in there? For fun and make some costs? To me it looked like a belt issue, no grip and no power. The part you took out - to say it mildly - probably was for the stop switch and/or last section of the mechanisms, e.g. bringing down the clamp or something like that..
@polarbear3427
2 жыл бұрын
At least this was amusing. Thanks. Sony always includes some parts which are superfluous. You can just through them away ; )
@larryshaver3568
2 жыл бұрын
It looks alot like a Tchnics player that i got for christmas in 1989
@kylewooten2986
2 жыл бұрын
Cool that’s awesome
@kylewooten2986
2 жыл бұрын
That’s awesome
@CounterRhythms
2 жыл бұрын
Oh well, can't win them all. I've bought 4 old Technics CD players in the past few years. 2 have some skipping issues and the other 2 are good. So a 50% success rate isn't bad for old inexpensive electronics.
@timfaracy754
2 жыл бұрын
I think a metal gear wore down a plastic gear facing it during a drawer jam. It's easy to see when you opened it but the drawer hides it when the CD is inserted. A paper shredder I had broke down that way.
@ThePalmermark
2 жыл бұрын
That was a total waste of time
@faulknik000
2 жыл бұрын
There is a sensor that is used to detect when the tray is all the way in or all the way out, which could have gotten dirty and caused the original problem of the tray not closing all the way to play the disc.
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