CD Player not Reading Disc Fix - Increase Laser Power (to 11) 

i do not use wetness on my laser lense only the Q Tip wipe gently once a week

Did the same thing with a Technics CD Player, Model SP-PG480a some years ago and worked really well. Now i have another (same model) and cant remember how i did it. Do you have a guide of the values for the adjustment?? Thanks in advance!!

​@@ecanavessi please have a look here buddy... www.hifiengine.com/manual_library/technics/sl-pg480a.shtml

thanks for the explanation! would you expect this to work multiple times ?

Wouldn’t increasing the current cause the unit to overheat ?

yes, which is why you have to be very careful with how much you increase it it'll die out due to being pushed too hard before overheating though - it's usually part of a big metal casting

@@michaelfeeney8437 Yes but you could monitor it but that may call for some expert analysis with a meter.

glad everything worked out ❤️

yea, a microfiber cloth damped in alcohol is what fixes 70% of my lasers too the other 30% do require this nuclear method of boosting the laser power I'm sure you'd be more than capable of doing that as well with a bit of patience :D

@@Darieee I do fix things around the house. Our toaster over door wouldn't stay closed till I fixed it. Just in the last couple of weeks I spent hours updating a Windows 7 and an 8 to 10s (waited too long because I didn't like W10). But I really was ready to get a new CD player and had lost patience. I take of lot of risks when I fix things because I don't know what I'm doing, but it usually turns out all right. I should mostly make sure I unplug electrical things before working on them. In my younger days I would have disassembled the CD player, and tried what you did, though.

glad you got the job done ✌️, just be aware to always boost it by as little as possible

glad I could help ❤️

I'm glad it helped! It sure helped me fix at the bare minimum 50 car radio cd modules

Hey Dan, Please let me know where is the potentiometer located in the Marantz?

@@zoranspirov1305 Hello, I'm afraid that I cannot remember exactly where the adjuster is but I do recall that I had to remove and refit the whole carriage every time I adjusted it. Not too difficult to spot once the carriage is out and the mechanism is upside down. I did not remove any other parts to access it. Good luck, it's a great CD player. Ours is still working perfectly... Thanks

@@dangodfrey480 Thanks Dan, I'll surely try and fix it.

lmaooo

@@tylerevans2261 Not gonna lie. I replaced it with an aftermarket a week later 😂

enjoy ❤️

glad I could help ❤️

yea ... there really doesn't need to be much on there for the entire operation to grind to a halt glad I could help ! have fun with it !!

Do you mean DCD-680? I ask because my Denon DCM-440 does not read intermittently.

Lou Fazio , Yes I have a DCD-680. I cleaned the lens with a Q- tip and fiddeled wit a pot. Now the player reads more discs but not every new one. I was thinking of tweaking it one more time. Maybe the dust cleaning did it??

@@amajorseven It is recommended to use a microfiber towel wrapped around a screwdriver tip. Maybe at least a blast of air from a duster can. I'd bet film/dust is not the issue. For mine (carousel type), I'm thinking it may be the disk turning into full position as a read begins. A belt replacement did restore its tray action.

my pleasure, have fun 🤘

nice 🔥

Yeah, first clean then boost in very small steps You should be on your way :D

Sorry to hear man

ebay, all kinds of laser CD DVD SACD drives available

If it is the opposite it won't do any damage, just turn it the other way

Hmm, not really, if it can read the discs just fine then it's surely not the laser module at fault

Mmmmm, so original releases also don't play? It might be an old laser module capable of only playing 650MB discs

Or did this laser power boost fix it ??

@@Darieee It says MP3/CD PLAYER, but unfortunately it doesn't read anything except the above mentioned. :(

awesome 🤘🤘

@@Darieee ...... Problem!!! I can't seem to find "ANY" bolt, nut, screw to turn and dial up the laser power output. No reference point, as this CD drive is "VERY" different from other drives...... I think,,, I believe. lol. I am trying to look it up now. Either way, I Will let you know the outcome... and again, thank you for your video and input. Always nice to have more Input and Info when working on a project where my knowledge is sub-par. L8.

could definitely give it a try 🤘

nice 🤘

maybe it's somewhere else ..??

it might be that some players struggle with 700MB discs if you're sure that's not it, you could try boosting it

who knows .. this is why it's advisable to adjust it only microscopically and check results ✌️

I didn't think mp3 players even had lenses

the laser will be under more stress, which is why you have to increase it as little as possible given I don't listen to CDs at all, I can't say I've ever stress tested this approach

what's a TOC error - and how did you fix it 🔥, sounds interesting as long as there is some adjustment somewhere on the assembly / main board, it should be doable maybe if they got their tolerances tight enough you'll have to swap an SMD resistor just remember to only SUUPER slightly tweak the value do let us know if you had any luck

@@Darieee Edit: I was able to fix the "NO DISC" error. I guess I had to turn the trimmer potenciometer a lot. 😃 I'll make a video on the "TOC ERRORa" issue in the future.

wow, nice !

the mechanism's plastic bits sometimes break .. some springs sometimes ping off you'll need to open the radio and get to the cd-player module inside also - it has a rubber roller which catches dust and loses its grip - some window cleaner on a rag takes care of that with spectacular results

@@Darieee Thank you for the replay. I tried to clean today w/ a disc made fm/thin cardboard 2001 Saturn SL2: moist it a bit w/91% Isopropyl Alcohol and inserted in CD player opening, then removed it slightly wiggling around. I don't remember if I pressed the Eject button, probably not. The cardboard was removed, but the slot got stuck in the way that I can't install CD anymore. More of that I tried to push those parts inside w/CD and all the doors started to lock in and out like crazy. Eventually I closed all the doors, but CD player is broken completely. All that has very good outcome though, since that car started to have a problem recently w/doors, they would got open, all of them from time to time, and we couldn't figure out what causes it. Now I know, that the malfunctioning radio unit causes it, bcs the disk was sitting inside. I'm planning to order new radios for both cars. Thank you again.

let me know if I can interest you in some with Bluetooth ✌️ ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Ud8wfRcM0tc.htmlsi=xjfgX8xf68wqFc2E

a lot harder

E. M. Torres where you at. I’ve been repairing radios for over a year now.

That's a very weird question to put under an entire video dedicated to answering exactly said question

@@Darieee so cleaning the eye will allow the usb port to work?

Yeah good point - that part of your problem is most likely cause by other shit -- maybe try cleaning the contacts inside the port? Check if the plastic piece is not broken in any way and that the pins are not bent out of alignment ?

@@Darieee ty ill try

ah ye ... just nudge it ever so slightly one way if that works it MUST mean you've increased the power 🔥

@@Darieee Just don't wanna risk damaging the thing by mistake, but thanks anway.

yeah - if a slight nudge one way doesn't do it go back, slight nudge the other way around ... then increase the amplitude and try both ways again if it doesn't work now ... and it doesn't work after a try like this ... it's hard to say who did it 🤘

@@Darieee I appreciate yoiur answer and I shall try that - thank you.

hmmm ... who knows they for sure must've used 700MB discs and not 650 on the problem discs do try and read them on a computer and see what the disc parameters are also - I'd assume said transport can handle random burnt CDs, right ??

I haven’t tried CD-R s yet. CD length seems the most obvious reason, but it’s only a guess. Most searches online suggest the laser is on its last legs but this doesn’t seem likely as the problem is too CD specific.

do try burning some random CD-Rs - would yield some data on the issue and - yea - check the disc metadata

Just tried a CD-R and that played ok. Then tried a few later NOW albums and many disc can’t be read. I think it may be due to them being long, even though some it reads are 78 mins long. The transport uses the best Philips mechanism CD Pro LF. I’ve never burnt a CD myself.

yea .. they might be burning stuff out of spec just to fit more in ..

yeah, shouldn't be that amazed ... I mod mercedes radios now, and at some point had quite a few with defective cd units I also started to (and still do) have around 3 4 5 busted cd drives ... with some broken plastic parts or dead motor drivers ... so I did take a laser completely to bits once ... to see if maybe there's something I could clean and there, when I held just the laser assembly in my hand, I saw this trimmer, clearly going to the laser ... turned it not knowing what to expect and hey -- it worked ! (afterwards I did see there's another dude on youtube also suggesting this, but mainly just people telling you to clean the lens)

mmm ... it could simply be another problem or.. did you try boosting the lazer power ?

@@Darieee thanks for the respond,the problem is that Benz s320 radio in very complicated to reach where the boosting adjustments.if I could adjust it I believed it will work but only if I see a pro to open it and do that on the video,then I will be able to penetrate alike.

uuu yeah ... your laser might've died try somehow swapping it out for another one 😳

On call as always xD

let us know if this worked

happy to help! what did we just fix?

@@Darieee Nothing yet but I will be taking apart and cleaning a Samsung DVD player with very few hours on it but was sitting uncovered in a dusty area.

Could be some other fault in that case ... did you first turn it just a tiny bit though xD ? Because going all in from the start might damage some shit in there

Same in my case. Adjusted but not detecting cd anymore. What can i check further? Can u help me.