The deeper cause of the problem lying in the capacitor in the power rail that going to the laser pick up. It losing value thus losing the available power it can supply, that is why you can get it worked again by increasing the power to compensate it (reduce resistance by turning the Pot anti-clockwise). When the cap lost more value than the range of the Auto power Pot can compensate then it will not work, and it will because the capacitor is dying anyway. Trace the ribbon cable back to the mainboard and find any capacitor next to the connector, replace it...most of the time it will work without touching any adjustable potiometers on the laser assembly, which may be a dangerous thing.
Thanks! Even if told that no adjustement should be done without proper readings, i turned just a little bit (5 degrees?...counterclockwise) one of the screws i a 90's cd player and is working perfectly. Hope it lasts and don't get fried. Removing stuff to get the readings in my case was a hell of a hassle so i took my chances. Thank you very much for this video!
You are great ! Needed exact information on which potentiometer to adjust on my sony FH-B170 which reading the CD then suddenly stop and giving NO DISC error. Gonna try tomorrow.
@@diymariuselectro Hello, this method worked for my system. No skip and no errors now and switching between tracks flawlessly. I don't know how long it will work but at least its working for now. Thank you very much !
Good video! Thanks! I have some minidisc players with no working the pickup, im already try all but never works, the laser are ok, im already adjusting to ideal gain etc but nothing, the pickup trying to read the disc several time but cant read, i thik the problem is about some alignment but how i can put the right alignment in that lens?
Hello, in my case laser is moving up and down but disc does not rotate i check motors externally and they are working fine. What could be the problem.I appreciate your reply.
@@diymariuselectro I will try with replacing the laser. I tried by adjusting as you showed in video but no result. I can see the red laser light but very dim.
Hey man! I have an old Akai sampler with this mechanizm (Akai CD3000 non xl). Unfortunately i moved all the knobs on the lens module. I have an osciloscope but i don't know where to plug it to calibrate the lens. Any advice? Thanks in advance!
when I made this video I found on google a complete article describing how to adjust all the knobs with the osciloscope.pls search it and if u not find I will search for u.
Hello Thank you for the great and clear explanation. I did exactly what you showed in de video. However I still have one problem now, the cd still skips half way there song. Do you have any idea what I might be doing wrong?
Great video! Just can you tell me the width of the ribbon connector (the one who's going, by left side, outside the optical drive). I think by "width" the number of traces. There is lot of mechanism with KSS-240A and they have different control PCB (with smaller or larger ribbon). It's for fixing a SEGA mega CD. thank!
greetings friend, to avoid the jumps in the song (the cds are original and are not very used) which of the three screws should I adjust? I already cleaned the optical lens but there are three screws I don't know which one to move. I hope you can help me thank you very much
I just replaced the KSS240 to a new unit on my Arcam CD player but now I get some repetitive noise with every spin on te CD especially on the last few tracks( away from the centre ). What do I need to adjust please?
hello, in my case, the lens goes up and moves but the disk does not rotate, I don't know if it's the motors or I also have to adjust a screw, I would appreciate the help
@@diymariuselectro In this case, would it be to adjust the one on the right, the one in the middle or the one on the left? I also have the KSS-240A on my sony LBT D550
Hi, I have the same CD player model, and it suffer from CD tray drawer wen closed, the laser mechanism don't move up... Plz could desassamble your CD drawer and explain how the mechanism should work properly so I can compare if the issue is because of belt or the wheel?
Great video thank you ! Optic module replacement is only needed for no error disc ? Because I bought a CD player which is crackling. Do you have any recommandation for an oscilloscope ?
@@diymariuselectro normally when you buy replacement laser lens optical pickup there is a anti static solder point on the lens circuit board which needs to be desoldered before installing and this was done because of potential short circuit or damaging the laser when transporting.
Well, I've just did repair my CD player based on KSS-240a by turning up the power on laser. But found an youtube video which explains what to do more - cleaning - and then it runs on normal values. I'm going to test this: ruclips.net/video/7LdyMof-eHc/видео.html
Awesome help, all my CD player would do was skip without reading the cd
A small turn and now it’s working fine.thanks for the help
I am glad that I helped u.I hope that u find other usefull things on my chanel.Share if u care :)
The deeper cause of the problem lying in the capacitor in the power rail that going to the laser pick up. It losing value thus losing the available power it can supply, that is why you can get it worked again by increasing the power to compensate it (reduce resistance by turning the Pot anti-clockwise).
When the cap lost more value than the range of the Auto power Pot can compensate then it will not work, and it will because the capacitor is dying anyway.
Trace the ribbon cable back to the mainboard and find any capacitor next to the connector, replace it...most of the time it will work without touching any adjustable potiometers on the laser assembly, which may be a dangerous thing.
With your instructions I just repaired my Denon CDC-725 CD player! Thx! 😊👍
I am glad that I helped you.hope to subscribe and create a comunity
Thanks! Even if told that no adjustement should be done without proper readings, i turned just a little bit (5 degrees?...counterclockwise) one of the screws i a 90's cd player and is working perfectly. Hope it lasts and don't get fried. Removing stuff to get the readings in my case was a hell of a hassle so i took my chances. Thank you very much for this video!
U are lucky
Thx for this. This was the first place I could find which told me which of the three pots adjusted the laser power. Roman
Pls translate in english
Awesome thank you for doing this video, nice and clear and easy to understand.👍
Tnx bro
Thanks mate laser alignment did work! 🙂
Excellent video , now my cd-player works again 😊
tnx bro.I am glad that I ve helped u.
You are great ! Needed exact information on which potentiometer to adjust on my sony FH-B170 which reading the CD then suddenly stop and giving NO DISC error. Gonna try tomorrow.
tnx bro,but this is just a temporary solution,u will have to replace laser unit.
@@diymariuselectro Hello, this method worked for my system.
No skip and no errors now and switching between tracks flawlessly.
I don't know how long it will work but at least its working for now.
Thank you very much !
@@diymariuselectro And subscribed !
tnx bro.
Good video! Thanks! I have some minidisc players with no working the pickup, im already try all but never works, the laser are ok, im already adjusting to ideal gain etc but nothing, the pickup trying to read the disc several time but cant read, i thik the problem is about some alignment but how i can put the right alignment in that lens?
when I made this video I found on the net detailed instructions to make all the adjustments,u need osciloscope and testcd.U can fint on the net.
How check laser power V? Multimeter? I have Kenwood DP-5060 with KSS240A.
I think I said in the video and coments that u need an osciloscope because its a signal and not a simple voltage.
Hello, in my case laser is moving up and down but disc does not rotate i check motors externally and they are working fine. What could be the problem.I appreciate your reply.
laser its week and dont reocgnize the cd.you can adjust like in this video,or replace laser part.
@@diymariuselectro I will try with replacing the laser. I tried by adjusting as you showed in video but no result. I can see the red laser light but very dim.
Can i get your whatsapp so i can share video with you
Thanks for your reply👍
Hey man! I have an old Akai sampler with this mechanizm (Akai CD3000 non xl). Unfortunately i moved all the knobs on the lens module. I have an osciloscope but i don't know where to plug it to calibrate the lens. Any advice?
Thanks in advance!
when I made this video I found on google a complete article describing how to adjust all the knobs with the osciloscope.pls search it and if u not find I will search for u.
@@diymariuselectro thanks!
I will dig it!
Hello
Thank you for the great and clear explanation.
I did exactly what you showed in de video.
However I still have one problem now, the cd still skips half way there song.
Do you have any idea what I might be doing wrong?
I can help u because can be a lot of causes.old laser,low curent etc.
Great video!
Just can you tell me the width of the ribbon connector (the one who's going, by left side, outside the optical drive).
I think by "width" the number of traces.
There is lot of mechanism with KSS-240A and they have different control PCB (with smaller or larger ribbon).
It's for fixing a SEGA mega CD.
thank!
I cant help u because I didnt have the cd anymore.
greetings friend, to avoid the jumps in the song (the cds are original and are not very used) which of the three screws should I adjust? I already cleaned the optical lens but there are three screws I don't know which one to move. I hope you can help me thank you very much
if its the same model,i said in the video detailed :)
I just replaced the KSS240 to a new unit on my Arcam CD player but now I get some repetitive noise with every spin on te CD especially on the last few tracks( away from the centre ). What do I need to adjust please?
u have to adjust alignment but its very dificult and u need osciloscope and test cd.
hello, in my case, the lens goes up and moves but the disk does not rotate, I don't know if it's the motors or I also have to adjust a screw, I would appreciate the help
I presume that led receiver doesnt see the laser beam,and the motor dont rotate.u can try adjust the power.
@@diymariuselectro In this case, would it be to adjust the one on the right, the one in the middle or the one on the left? I also have the KSS-240A on my sony LBT D550
Help Please! I have a sony scd ce775 5-disc player., the tray just keeps spinning nonstop.
you should clean adjust or replace laser unit.
Thank You Much
@@diymariuselectro
How to lubricate the CD drawer and the laser carriage? What kind of lubricant? Thank you.
there is some white lubricant called silicon grease,its ideal for plastic.
Hi,
I have the same CD player model, and it suffer from CD tray drawer wen closed, the laser mechanism don't move up...
Plz could desassamble your CD drawer and explain how the mechanism should work properly so I can compare if the issue is because of belt or the wheel?
hi probably the mecanism is not fault,the led power is to small.try to increase it.
So of the 3 trimpots, the regulation must be the one on the right, ok?
if its the same model,I said in the video,and now i dont remember after 1 year.
Hola, yo tengo un Sony CDP M-201, me puedes decir por favor, como puedo saber que modulo debo comprar para reparar? Muchas gracias.
english pls
Hello, I have a Sony CDP M-201, can you please tell me, how can I know which module I should buy to repair? Thank you so much.
u should searh internet cdp m201 cd unit and find it simple.
Great video thank you !
Optic module replacement is only needed for no error disc ? Because I bought a CD player which is crackling.
Do you have any recommandation for an oscilloscope ?
It should work aslo for you.give it a try.
U can find on my chanel review for my scope.its good.
@@diymariuselectro Thank you Marius !!!!!!
I wonder also why an oscilloscope is needed if what is needed is just to see the voltage ?
A voltmeter is not enough ?
its not a fixed voltage,its high freqency signal,and u need osciloscope.
Hi, I want to ask you about my cd player
you can ask
Does this pickup contains solder joints?
I dont understand your question sorry
@@diymariuselectro normally when you buy replacement laser lens optical pickup there is a anti static solder point on the lens circuit board which needs to be desoldered before installing and this was done because of potential short circuit or damaging the laser when transporting.
@@Retirednolongeractive ok now I understand.I dont know,I didnt replace the laser led,I just adjust the power.
@@diymariuselectro i see thanks anyways
There is a way to check the láser ?
I dont know.we can try to find the answear on the internet.
@@diymariuselectro so , You find something?
@@andresb2834 I didnt have time to search.
Turn right or left clockwise?
To increase power u have to turn counter clock wise
@@diymariuselectro Thank you
Buna ziua, La Sony CDP S45 nu invarte discul. Ce pot sa fac? Multumesc.
Buna sa curatati lentila la laser sau sa inlocuiti ansamblul laser.
@@diymariuselectro OK , dar lentila lucreaza, cauta suportul dar discul nu se invarte.
il cauta,dar nu il gaseste.sau mariti intensitatea ca in video sau inlocuiti tot ansamblul.
@@diymariuselectro Ok, multumesc.
Well, I've just did repair my CD player based on KSS-240a by turning up the power on laser.
But found an youtube video which explains what to do more - cleaning - and then it runs on normal values.
I'm going to test this:
ruclips.net/video/7LdyMof-eHc/видео.html