|
problems with my Adcom CD player
Hello,
I have a used ADCOM GCD-700 5 disk CD player that was given to me and it is overly sensitive to vibrations, bumps and slight scratches on the CDs. I've mounted it on vibration absorbing rubber and this has greatly impoved its bump and vibration sensitivity, but it is still very sensitive to the slightest mark or scratch on cds. How can I cure this. thanks in advance, Shaun |
problems with my Adcom CD player
On 2/20/2011 3:13 PM, Shaun wrote:
Hello, I have a used ADCOM GCD-700 5 disk CD player that was given to me and it is overly sensitive to vibrations, bumps and slight scratches on the CDs. I've mounted it on vibration absorbing rubber and this has greatly impoved its bump and vibration sensitivity, but it is still very sensitive to the slightest mark or scratch on cds. How can I cure this. thanks in advance, Shaun Shaun, If this machine is as old as I think it is, then its not worth putting any serious money into it. There is likely a manufacturing date on the machine that will give the month and year it was made. Make sure if there are any transit screws on the bottom they are removed or in the released position. You could try cleaning the lens and the disc platter. You'd have to open the machine to do this. the lens is about the size of a pencil eraser, and is on a suspension, so be gentle with it. I use a cotton swab moistened with lens cleaning fluid, though Windex will probably do. I also clean off the platter that the disc sits on while spinning. I've seen enough debris build up on the platter over time that it no longer lets the disc sit flat, and that can cause all kinds of grief. Again, a moistened swab or slightly damp cloth is all you need to clean it. Beyond that, you are likely to have a worn out laser, which is likely to be more expensive to replace than the machine is worth. Regards, Tim Schwartz Bristol Electronics |
problems with my Adcom CD player
On Sun, 20 Feb 2011 14:13:20 -0600, "Shaun" wrote:
I have a used ADCOM GCD-700 5 disk CD player that was given to me and it is overly sensitive to vibrations, bumps and slight scratches on the CDs. I've mounted it on vibration absorbing rubber and this has greatly impoved its bump and vibration sensitivity, but it is still very sensitive to the slightest mark or scratch on cds. How can I cure this. First, clean out any crud from the laser head assembly. If that doesn't improve things, replace it. That's a 1997 vintage machine so parts may be tricky to find... Oh, too easy: http://www.adcomparts.com/part.php?item=46001400 However, I don't think it's worth $50 to fix something that old. Mo http://www.fixya.com/support/p134391-adcom_gcd_700_5_disc_cd_changer http://www.fixya.com/support/t648590-adcom_gcd_700_tracking_problems -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
problems with my Adcom CD player
"Tim Schwartz" wrote in message ... On 2/20/2011 3:13 PM, Shaun wrote: Hello, I have a used ADCOM GCD-700 5 disk CD player that was given to me and it is overly sensitive to vibrations, bumps and slight scratches on the CDs. I've mounted it on vibration absorbing rubber and this has greatly impoved its bump and vibration sensitivity, but it is still very sensitive to the slightest mark or scratch on cds. How can I cure this. thanks in advance, Shaun Shaun, If this machine is as old as I think it is, then its not worth putting any serious money into it. There is likely a manufacturing date on the machine that will give the month and year it was made. Make sure if there are any transit screws on the bottom they are removed or in the released position. You could try cleaning the lens and the disc platter. You'd have to open the machine to do this. the lens is about the size of a pencil eraser, and is on a suspension, so be gentle with it. I use a cotton swab moistened with lens cleaning fluid, though Windex will probably do. I also clean off the platter that the disc sits on while spinning. I've seen enough debris build up on the platter over time that it no longer lets the disc sit flat, and that can cause all kinds of grief. Again, a moistened swab or slightly damp cloth is all you need to clean it. Beyond that, you are likely to have a worn out laser, which is likely to be more expensive to replace than the machine is worth. Regards, Tim Schwartz Bristol Electronics This CD player is a higher quality model and one of the only multidisk units that uses high quality components. Mechanically it's not made very well though, but the electronic audio stages are all class A, so it's worth my time and some money to try to fix it. Thanks for your reply. Shaun |
problems with my Adcom CD player
"Jeff Liebermann" wrote in message ... On Sun, 20 Feb 2011 14:13:20 -0600, "Shaun" wrote: I have a used ADCOM GCD-700 5 disk CD player that was given to me and it is overly sensitive to vibrations, bumps and slight scratches on the CDs. I've mounted it on vibration absorbing rubber and this has greatly impoved its bump and vibration sensitivity, but it is still very sensitive to the slightest mark or scratch on cds. How can I cure this. First, clean out any crud from the laser head assembly. If that doesn't improve things, replace it. That's a 1997 vintage machine so parts may be tricky to find... Oh, too easy: http://www.adcomparts.com/part.php?item=46001400 However, I don't think it's worth $50 to fix something that old. Mo http://www.fixya.com/support/p134391-adcom_gcd_700_5_disc_cd_changer http://www.fixya.com/support/t648590-adcom_gcd_700_tracking_problems -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 Thanks for the links, I'll probably order a new laser head for it, but first I'll lake it apart and clean the lenses. Shaun |
problems with my Adcom CD player
"Shaun" wrote in message
... "Jeff Liebermann" wrote in message ... On Sun, 20 Feb 2011 14:13:20 -0600, "Shaun" wrote: I have a used ADCOM GCD-700 5 disk CD player that was given to me and it is overly sensitive to vibrations, bumps and slight scratches on the CDs. I've mounted it on vibration absorbing rubber and this has greatly impoved its bump and vibration sensitivity, but it is still very sensitive to the slightest mark or scratch on cds. How can I cure this. First, clean out any crud from the laser head assembly. If that doesn't improve things, replace it. That's a 1997 vintage machine so parts may be tricky to find... Oh, too easy: http://www.adcomparts.com/part.php?item=46001400 However, I don't think it's worth $50 to fix something that old. Mo http://www.fixya.com/support/p134391-adcom_gcd_700_5_disc_cd_changer http://www.fixya.com/support/t648590-adcom_gcd_700_tracking_problems -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 Thanks for the links, I'll probably order a new laser head for it, but first I'll lake it apart and clean the lenses. Shaun Absolutely clean it. Should help. Mark Z. |
problems with my Adcom CD player
"Shaun" wrote in message ... "Jeff Liebermann" wrote in message ... On Sun, 20 Feb 2011 14:13:20 -0600, "Shaun" wrote: I have a used ADCOM GCD-700 5 disk CD player that was given to me and it is overly sensitive to vibrations, bumps and slight scratches on the CDs. I've mounted it on vibration absorbing rubber and this has greatly impoved its bump and vibration sensitivity, but it is still very sensitive to the slightest mark or scratch on cds. How can I cure this. First, clean out any crud from the laser head assembly. If that doesn't improve things, replace it. That's a 1997 vintage machine so parts may be tricky to find... Oh, too easy: http://www.adcomparts.com/part.php?item=46001400 However, I don't think it's worth $50 to fix something that old. Mo http://www.fixya.com/support/p134391-adcom_gcd_700_5_disc_cd_changer http://www.fixya.com/support/t648590-adcom_gcd_700_tracking_problems -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 Thanks for the links, I'll probably order a new laser head for it, but first I'll lake it apart and clean the lenses. Shaun KSS240A lasers should be available from many sources for much less than $50. This is a very 'bog-standard' laser made by Sony, and used in many manufacturers' products over the years, as well as their own. Try to make sure if you get one from a cheaper source, that it is a genuine Sony one though. Of all of the KSS series replacement lasers, I've found the '240 to be probably the most critical, when used in most manufacturers' machines. Arfa |
problems with my Adcom CD player
Shaun wrote in message
... "Jeff Liebermann" wrote in message ... On Sun, 20 Feb 2011 14:13:20 -0600, "Shaun" wrote: I have a used ADCOM GCD-700 5 disk CD player that was given to me and it is overly sensitive to vibrations, bumps and slight scratches on the CDs. I've mounted it on vibration absorbing rubber and this has greatly impoved its bump and vibration sensitivity, but it is still very sensitive to the slightest mark or scratch on cds. How can I cure this. First, clean out any crud from the laser head assembly. If that doesn't improve things, replace it. That's a 1997 vintage machine so parts may be tricky to find... Oh, too easy: http://www.adcomparts.com/part.php?item=46001400 However, I don't think it's worth $50 to fix something that old. Mo http://www.fixya.com/support/p134391-adcom_gcd_700_5_disc_cd_changer http://www.fixya.com/support/t648590-adcom_gcd_700_tracking_problems -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 Thanks for the links, I'll probably order a new laser head for it, but first I'll lake it apart and clean the lenses. Shaun Then after cleaning and before ditching. Find the "power pot" ,measure resistance with a DVM , "both ways" in case of a difference, so you can get back to that value. Change the value , no more than 5 percent, to see if it improves error proneness |
problems with my Adcom CD player
"N_Cook" wrote in message ... Shaun wrote in message ... "Jeff Liebermann" wrote in message ... On Sun, 20 Feb 2011 14:13:20 -0600, "Shaun" wrote: I have a used ADCOM GCD-700 5 disk CD player that was given to me and it is overly sensitive to vibrations, bumps and slight scratches on the CDs. I've mounted it on vibration absorbing rubber and this has greatly impoved its bump and vibration sensitivity, but it is still very sensitive to the slightest mark or scratch on cds. How can I cure this. First, clean out any crud from the laser head assembly. If that doesn't improve things, replace it. That's a 1997 vintage machine so parts may be tricky to find... Oh, too easy: http://www.adcomparts.com/part.php?item=46001400 However, I don't think it's worth $50 to fix something that old. Mo http://www.fixya.com/support/p134391-adcom_gcd_700_5_disc_cd_changer http://www.fixya.com/support/t648590-adcom_gcd_700_tracking_problems -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 Thanks for the links, I'll probably order a new laser head for it, but first I'll lake it apart and clean the lenses. Shaun Then after cleaning and before ditching. Find the "power pot" ,measure resistance with a DVM , "both ways" in case of a difference, so you can get back to that value. Change the value , no more than 5 percent, to see if it improves error proneness It's not quite that straightforward on a '240, as there are three pots on there, and considerable interaction between them. I would not recommend touching them, as at least one of them is *extremely* critical in its setting to get the thing to play at all. Arfa |
problems with my Adcom CD player
Arfa Daily wrote in message
... "N_Cook" wrote in message ... Shaun wrote in message ... "Jeff Liebermann" wrote in message ... On Sun, 20 Feb 2011 14:13:20 -0600, "Shaun" wrote: I have a used ADCOM GCD-700 5 disk CD player that was given to me and it is overly sensitive to vibrations, bumps and slight scratches on the CDs. I've mounted it on vibration absorbing rubber and this has greatly impoved its bump and vibration sensitivity, but it is still very sensitive to the slightest mark or scratch on cds. How can I cure this. First, clean out any crud from the laser head assembly. If that doesn't improve things, replace it. That's a 1997 vintage machine so parts may be tricky to find... Oh, too easy: http://www.adcomparts.com/part.php?item=46001400 However, I don't think it's worth $50 to fix something that old. Mo http://www.fixya.com/support/p134391-adcom_gcd_700_5_disc_cd_changer http://www.fixya.com/support/t648590-adcom_gcd_700_tracking_problems -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 Thanks for the links, I'll probably order a new laser head for it, but first I'll lake it apart and clean the lenses. Shaun Then after cleaning and before ditching. Find the "power pot" ,measure resistance with a DVM , "both ways" in case of a difference, so you can get back to that value. Change the value , no more than 5 percent, to see if it improves error proneness It's not quite that straightforward on a '240, as there are three pots on there, and considerable interaction between them. I would not recommend touching them, as at least one of them is *extremely* critical in its setting to get the thing to play at all. Arfa Which implies 3 analoguey things that could drift over time. I would take 3x 0.1 percent measurements and tabulate some twiddlings v drop-out time of a known bad ie deliberately scratched track on a CD. As last legs anyway, nothing to loose except a bit of time |
problems with my Adcom CD player
"N_Cook" wrote in message ... Arfa Daily wrote in message ... "N_Cook" wrote in message ... Shaun wrote in message ... "Jeff Liebermann" wrote in message ... On Sun, 20 Feb 2011 14:13:20 -0600, "Shaun" wrote: I have a used ADCOM GCD-700 5 disk CD player that was given to me and it is overly sensitive to vibrations, bumps and slight scratches on the CDs. I've mounted it on vibration absorbing rubber and this has greatly impoved its bump and vibration sensitivity, but it is still very sensitive to the slightest mark or scratch on cds. How can I cure this. First, clean out any crud from the laser head assembly. If that doesn't improve things, replace it. That's a 1997 vintage machine so parts may be tricky to find... Oh, too easy: http://www.adcomparts.com/part.php?item=46001400 However, I don't think it's worth $50 to fix something that old. Mo http://www.fixya.com/support/p134391-adcom_gcd_700_5_disc_cd_changer http://www.fixya.com/support/t648590-adcom_gcd_700_tracking_problems -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 Thanks for the links, I'll probably order a new laser head for it, but first I'll lake it apart and clean the lenses. Shaun Then after cleaning and before ditching. Find the "power pot" ,measure resistance with a DVM , "both ways" in case of a difference, so you can get back to that value. Change the value , no more than 5 percent, to see if it improves error proneness It's not quite that straightforward on a '240, as there are three pots on there, and considerable interaction between them. I would not recommend touching them, as at least one of them is *extremely* critical in its setting to get the thing to play at all. Arfa Which implies 3 analoguey things that could drift over time. I would take 3x 0.1 percent measurements and tabulate some twiddlings v drop-out time of a known bad ie deliberately scratched track on a CD. As last legs anyway, nothing to loose except a bit of time I'm sure I can find a few CDs that are scratched in my collection. shaun |
| All times are GMT +1. The time now is 09:24 PM. |
Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004 - 2014 DIYbanter