tag:blogger.com,1999:blog-684396141123606281.post2737882788506223799..comments2024-03-18T03:11:41.240-07:00Comments on Eric's Hi-Fi Blog: Marantz CD6003 modificationEric Tehhttp://www.blogger.com/profile/05157135145227727200noreply@blogger.comBlogger16125tag:blogger.com,1999:blog-684396141123606281.post-85958012022315810672015-01-28T00:04:30.969-08:002015-01-28T00:04:30.969-08:00AB Compared CD6003 with a dated Marantz CD63KI sto...AB Compared CD6003 with a dated Marantz CD63KI stock. Both connected separately to Preamp input and switchable AB to compare with same CD.<br />63KI was very good but falls short in vivid presentation, 6003 was far more forward, lively and better defined everywhere. CD63 sounded laid back, smaller dimension and rather relaxed. CD6003 would make you sit up and become attentive immediately.<br />Then a simple opamp swap on the CD63 with LM6172 chip, huge improvement and nearer to CD6003 but still not there. It lacked by a small degree of space, dimension and refinement. Its been quite a refresher and interesting exercise after left off digital mods for quite some years.<br />Meanwhile, changed a few more critical filter caps to FC types on the DSP board. Perceived another step of improvement. More solid performance heard.Anonymoushttps://www.blogger.com/profile/11090231787061247868noreply@blogger.comtag:blogger.com,1999:blog-684396141123606281.post-41588845002305007022015-01-26T22:17:28.942-08:002015-01-26T22:17:28.942-08:00Thanks for your comments. This is useful informati...Thanks for your comments. This is useful information for those modding their CD6003.Eric Tehhttps://www.blogger.com/profile/05157135145227727200noreply@blogger.comtag:blogger.com,1999:blog-684396141123606281.post-78891482306180127172015-01-23T22:58:18.133-08:002015-01-23T22:58:18.133-08:00Just acquired a used CD6003 in near mint condition...Just acquired a used CD6003 in near mint condition. I bought it purely for the USB feature. This is my 2nd Marantz after I've sold off my mint CD63 KI many years ago. After listening for quite a while to establish its stock performance, I set out to mod the following on the PSU and Audio Output PCB. Nothing done to the DSP board. That one maybe later on and most probably unlikely.<br />1. Change all the smaller electrolytic caps to Panasonic FC low impedance type of same capacitance value.<br />2. Replace all electrolytic caps on the audio board to Nichicon Fine Gold and Panasonic FC.Fine Gold was at the DAC supply lines.<br />3. Dynamat damping on the chassis cover.<br />4. I compared the Marantz DAC schematic to factory CS4398 datasheet and found 1 cap (Vref supply filter cap) to be under specified. I up rated from 33uF to 100uF and 47uF respectively.<br />Done. After some hours of running in, the performance was far superior than before in numerous areas.<br />Bass lines are tighter, better defined, metallic instruments sound more refined, richer and purer. Cymbals are clearer and not splashy or crashing as previously. The whole music performance is of a very different character that is very satisfying. Other notable points is the timing and pace is a little faster and more cohesive. Layering and space between vocals and music apparently a more satisfying experience. Its now more musical and satisfying to my previous Rotel RCD971 with Kwak Clock.Anonymoushttps://www.blogger.com/profile/11090231787061247868noreply@blogger.comtag:blogger.com,1999:blog-684396141123606281.post-17743253008123262832012-02-04T20:13:54.181-08:002012-02-04T20:13:54.181-08:00Hi Cooldude,
It would be better for you to bring ...Hi Cooldude,<br /><br />It would be better for you to bring it in for service. I've never seen a failed spindle motor before (maybe I am lucky). Usually the problems trace back to a bad lens or a problem in the servo board.Eric Tehhttps://www.blogger.com/profile/05157135145227727200noreply@blogger.comtag:blogger.com,1999:blog-684396141123606281.post-38915443826489249322012-02-01T20:04:40.756-08:002012-02-01T20:04:40.756-08:00hi ,
need your help . My Marantz CD6003 (out of w...hi ,<br /><br />need your help . My Marantz CD6003 (out of warranty) needs a spindle motor replacement . Did a lot of googling and tried a lot of stuff ...before arriving at this inference .<br /><br />Cleaned the lens . CD spins without the spindle motor at the top . So the other motor seems to be working fine . When i remove the spindle motor and place it again ..it works for some time ...and goes off in case I replace the cd or power off and power on . I have to rotate the CD manually to get the started ..like those fans .<br /><br />Can u suggest where can i find a spindle motor attached to a platter which will fit in my CD 6003 . Do they use standard ones or is it proprietary ...<br /><br />from the image that you have on your blog I referring to the part which is attached on a black plate(platter) with two screws and which pulls the cd upwards ...I am new to this ...so that I guess is the spindle motor ? Pls confirm this alsoCOOLDUDEhttps://www.blogger.com/profile/17225464644538030533noreply@blogger.comtag:blogger.com,1999:blog-684396141123606281.post-24192627650081797092011-10-01T05:05:45.428-07:002011-10-01T05:05:45.428-07:00Additional problem now. Without the muting transis...Additional problem now. Without the muting transistors but it only work for a while. Found 1 C3200 and 1 A1268 shorted.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-684396141123606281.post-42721465644419637682011-09-26T17:03:25.027-07:002011-09-26T17:03:25.027-07:00It is quite rare for the muting transistors to bur...It is quite rare for the muting transistors to burn out. If you are sure that is the only problem, then yes, you can just remove them without further modifications.Eric Tehhttps://www.blogger.com/profile/05157135145227727200noreply@blogger.comtag:blogger.com,1999:blog-684396141123606281.post-5224529083208944642011-09-26T14:51:01.620-07:002011-09-26T14:51:01.620-07:00congratz...
marantz wasnt mature enough to do this...congratz...<br />marantz wasnt mature enough to do this mod...Hamidhttps://www.blogger.com/profile/17713373207743590297noreply@blogger.comtag:blogger.com,1999:blog-684396141123606281.post-42303409457206793562011-09-22T19:25:24.689-07:002011-09-22T19:25:24.689-07:00Hmm..My CD6003 muting transistor is burnt, can I s...Hmm..My CD6003 muting transistor is burnt, can I simply remove it?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-684396141123606281.post-49990611517080394752010-11-07T05:02:36.692-08:002010-11-07T05:02:36.692-08:00Ok, Thank you for your prompt reply. I'm still...Ok, Thank you for your prompt reply. I'm still clueless at the technology you're talking here and I'm not quite sure how to proceed from here.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-684396141123606281.post-61305178023660663202010-11-05T22:35:00.150-07:002010-11-05T22:35:00.150-07:00Hi Andy,
Sure, the CD5003 can be modded on the sa...Hi Andy,<br /><br />Sure, the CD5003 can be modded on the same lines as the CD6003. I have not seen the insides of the CD5003 but I'm quite sure that the analog output stage would be the same. As for the clean up of the digital power supply line, this is a generic mod that applies to most CD players.<br /><br />Unfortunately, I do not do modifications for fees but check around local forums, there are plenty of people / companies that offer modification services.Eric Tehhttps://www.blogger.com/profile/05157135145227727200noreply@blogger.comtag:blogger.com,1999:blog-684396141123606281.post-46845336111752108522010-11-04T03:57:29.995-07:002010-11-04T03:57:29.995-07:00Bro, I have a CD5003 model. Can it be modded? Will...Bro, I have a CD5003 model. Can it be modded? Will pay if you have the time. Thanks!<br /><br />AndyAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-684396141123606281.post-14852443009943850772010-08-19T23:56:16.507-07:002010-08-19T23:56:16.507-07:00Recommended values seem to be a 0.47uf, heatshrink...Recommended values seem to be a 0.47uf, heatshrinked as additional measure against explosion and spraying of its contents everwhere. <br /><br />Do u need any crystals? i've some med sized citrine and amethyst all belonged to the quartz family. Used for its piezoelectric properties.horchaihttps://www.blogger.com/profile/01294917404836546413noreply@blogger.comtag:blogger.com,1999:blog-684396141123606281.post-27416594967327589612010-08-14T19:23:48.789-07:002010-08-14T19:23:48.789-07:00This comment has been removed by the author.Eric Tehhttps://www.blogger.com/profile/05157135145227727200noreply@blogger.comtag:blogger.com,1999:blog-684396141123606281.post-12750107961087404962010-08-14T19:23:35.986-07:002010-08-14T19:23:35.986-07:00Yes, maybe it is worth a shot. If installed direct...Yes, maybe it is worth a shot. If installed directly across the IEC terminals, it will be constantly drawing current. It should have a resistor soldered across in parallel to discharge the capacitor when the player is off.<br /><br />For safety reasons, a capacitor used in this manner across the mains should be an x rated cap.Eric Tehhttps://www.blogger.com/profile/05157135145227727200noreply@blogger.comtag:blogger.com,1999:blog-684396141123606281.post-84744530802094149622010-08-09T02:02:50.464-07:002010-08-09T02:02:50.464-07:00How abt an auricap tweak across the iec terminals?...How abt an auricap tweak across the iec terminals? It was a popular tweak once in the past. May be applicable.horchaihttps://www.blogger.com/profile/01294917404836546413noreply@blogger.com