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Troubleshooting CD Players

I know which part is the switch, I don't know how it is working as a switch. I only know a switch as something like a light switch, this is just a solid piece of plastic.
 
classyharlan said:
I know which part is the switch, I don't know how it is working as a switch. I only know a switch as something like a light switch, this is just a solid piece of plastic.
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There is a piece sticking out on the lower left. that's the plunger. Squirt Deoxit into the switch where the plunger goes in, and work it 30 times. then see if it reads 0 Ohms when you push the plunger.
 
The part that you identify is immobile, doesn't move, however inside of that part I can see now there is another smaller piece that looks plunger-ish if I know what I'm looking for. It is depressed into the body and flush with the opening so I missed it previously. Also since is it completely inside the body it can't be worked. So it appears I'm out of luck. Thanks for your continued replies.
 
classyharlan said:
The part that you identify is immobile, doesn't move, however inside of that part I can see now there is another smaller piece that looks plunger-ish if I know what I'm looking for. It is depressed into the body and flush with the opening so I missed it previously. Also since is it completely inside the body it can't be worked. So it appears I'm out of luck. Thanks for your continued replies.
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Go to Digikey and search for microswitch. Find one that is similar or has similar dimensions to the original.
 
I apologize in advance but I do not understand the terms referenced in the sticky. I have a RCD-855 that receives the disk, never spins, no error message. The laser does its little initial "search", I assume, but that is it, i never see a light. I removed the top of the device and made this movie, hope it is clear. Thanks
Is it obvious what is wrong?

At the end, I pushed the eject.
 
Thanks so much. I was worried I was going to get reamed for such a basic question. But this is a strange beast to me. I will check the voltage to the laser tomorrow. Thanks again.
 
Cdrat said:
I apologize in advance but I do not understand the terms referenced in the sticky. I have a RCD-855 that receives the disk, never spins, no error message. The laser does its little initial "search", I assume, but that is it, i never see a light. I removed the top of the device and made this movie, hope it is clear. Thanks
Is it obvious what is wrong?

At the end, I pushed the eject.
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Bad laser. It's a Philips swing arm laser, no longer available.
 
Cdrat said:
Thanks, sorry it is bad news. I found them on aliexpress, $39 or so. It is a nice player, my inclination is to give it a try.

https://www.aliexpress.com/item/32842913452.html?spm=2114.12057483.detail.3.3a757e9acz34NL

Whoa, sketchy reviews, used parts, not sure about this.

Think I am shopping for a used, working Magnavox or technics that is working, should be able to do that for $50.
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Avoid Magnavox. They all have the swing arm lasers, none available.
Technics players are nice and the lasers, though no longer available, last a looong time.
Best is to buy a player that used a Sony KSS-150A, KSS-210A, KSS-240A, or KSS-213 laser. Those are the ONLY lasers still available from good sources.
There is a list online of CD players and lasers used in them.
https://elektrotanya.com/laser_cd_model_pickup_cross-reference.pdf/download.html
 
Pio1980 said:
What about the DVD multimedia players?
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None of the lasers are available. They want you to buy the entire mechanism for $200. For that, you can buy a new player!
I have a Sony Blu-Ray player. When I watch movies, the music in the movies sounds very good and I think it's supposed to be able to play SACD's! I don't have any, but I plan to have a friend bring some over to try.
 
I was actually going to strip the maganavox for parts. Boy is it tough to find the information on the mechanisms for DVD players. I have a DVP-7700 that plays fine, but I have not opened it yet. I was always under the impression that the "swing arm" was the most long-lasting design (of course, doesn't help if you can never replace it). So many people "ooh and ah" about the philips swing transport. I just want to make sure I have good transports for the long term, and with CDs falling out of favor, want to make sure I am all set. But, Dr Audio, thanks for the list, better to have available, good quality units, this is the one part of my system I can expect to wear out. I have been using http://vasiltech.narod.ru/CD-Player-DAC-Transport.htm, but neither list has DVD players.

DR Audio, makes sense that a new DVD or whatever with a digital out is a better long-term direction. I can see my old amps and speakers working great for 30 years (with a little maintenance), but a CD transport?; seems like an ongoing headache. I seriously doubt that I will be able to tell a TDA1541A double crown in a CD "jalopy" from a Khadas or some other good quality, low cost dac and an up to date transport, even low cost. (not to say that others cannot)

For about the same $50 for a new laser, I bought a Pioneer DV-300 that Lampizator and others go on about…..always looking for a new project.
 
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Cdrat said:
Boy is it tough to find the information on the mechanisms for DVD players.
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This is what I've been saying. Same is true for replacement lasers for any new Cd player. I have found NONE available. This is why I tell people to buy the cheapest new Blu-Ray player or CD player that sounds good, because 5 years from now when the laser goes belly up, you'll be replacing the player because you can't service it. Or buy a used CD player with a Sony laser.
 
dr*audio said:
If the D/A is bad, and outboard DAC should still work. If the DSP is bad, an outboard DAC will probably not work, because the DSP does the error correction.
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In the very delayed followup dept... on the Cambridge Audio D500 SE.
I finally picked up an outboard DAC and the optical out through the DAC is working fine.
I guess the next step is to think about replacing the internal DAC.
Thanks as always for the help!
 
You can try to clean the button switch with DeOxit. Work it 50 times or so. If that doesn't work, time to replace it.

The switch is very common across the unit and other units. I had to replace one for my Tray Open/Close button. Just a little soldering. The hardest part was disassembling the faceplate from the unit.
 
KingJT said:
In the very delayed followup dept... on the Cambridge Audio D500 SE.
I finally picked up an outboard DAC and the optical out through the DAC is working fine.
I guess the next step is to think about replacing the internal DAC.
Thanks as always for the help!
Click to expand...
Why wouldn't you just use the outboard DAC?
Also, I don't remember your original problem but if there is no sound at all, there may be muting transistors that are blown.
 
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