{"id":16095,"date":"2025-06-02T19:06:34","date_gmt":"2025-06-02T18:06:34","guid":{"rendered":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=16095"},"modified":"2025-07-08T20:44:41","modified_gmt":"2025-07-08T19:44:41","slug":"cd-303-3","status":"publish","type":"post","link":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=16095","title":{"rendered":"CD 303 with Multiple Faults , Repair & Refurbisch"},"content":{"rendered":"

CD 303 , won’t play discs ,<\/p>\n

\"\"<\/p>\n

 <\/p>\n

\"\"<\/p>\n

 <\/p>\n

\"\"<\/p>\n

interconnect board<\/p>\n

\"\"<\/p>\n

Already added cinch chassis connectors<\/p>\n

\"\"<\/p>\n

 <\/p>\n

\"\"<\/p>\n

 <\/p>\n

\"\"<\/p>\n

 <\/p>\n

\"\"<\/p>\n

 <\/p>\n

\"\"<\/p>\n

There has been done a lot of resoldering already<\/p>\n

\"\"<\/p>\n

Won’t read discs, output Reed-relais switching \u00a0fast<\/p>\n

\"\"<\/p>\n

Fixed the powersupply , Capicitors where really bad.<\/p>\n

\"\"<\/p>\n

Quick Test there is audio \u00a0\ud83d\ude42<\/p>\n

\"\"<\/p>\n

New capicitors<\/p>\n

\"\"<\/p>\n

 <\/p>\n

\"\"<\/p>\n

New Display , New Capicitor , New Switches<\/p>\n

\"\"<\/p>\n

 <\/p>\n

\"\"<\/p>\n

Resolder interconnects<\/p>\n

\"\"<\/p>\n

Who has removed \u00a0the Conectors , and why..?<\/p>\n

\"\"<\/p>\n

Track & selection leds resoldering<\/p>\n

<\/p>\n

Player stopt working..:-( , Found some more trouble ,<\/p>\n

\"\"<\/p>\n

 <\/p>\n

\"\"<\/p>\n

 <\/p>\n

\"\"<\/p>\n

 <\/p>\n

\"\"<\/p>\n

 <\/p>\n

\"\"<\/p>\n

 <\/p>\n

\"\"<\/p>\n

 <\/p>\n

\"\"<\/p>\n

 <\/p>\n

\"\"<\/p>\n

 <\/p>\n

\"\"<\/p>\n

Okay it’s starting up , reading TOC , \u00a0plays CD’s, but it stops after 30 minutes and it won’t start again , why.???<\/p>\n

Pin 8 drops to +2 volts ?<\/p>\n

\"\"<\/p>\n

 <\/p>\n

Pin 7<\/p>\n

\"\"<\/p>\n

 <\/p>\n

Replacing NE5514<\/p>\n

\"\"<\/p>\n

Signal again…<\/p>\n

\"\"<\/p>\n

After Adjusting Disc height , Focus Offset , and Focus-band-width , playing Big scratchs on CD without problems \ud83d\ude09<\/p>\n

\"\"<\/p>\n

Tracking over 75 minutes Disc \ud83d\ude42 , Radial and Focus servo working hard , Movie -> \u00a0 Tracking Disc over 75 Minutes <\/a><\/span><\/p>\n

\"\"<\/p>\n

What a tough guy this CD303 pffffff. Also a defective HEF4025 in the track detector, which does something with DO<\/strong> (Dropout) and HFL<\/strong> (high frequency present), What does that FS<\/strong> do (?) sorry , I don’t even see it anymore, blackout…<\/p>\n

We can normally “REV<\/strong>” and “FWD<\/strong>” again without going crazy<\/p>\n

 <\/p>\n

\"\"<\/p>\n

“Hi Bram , FS stands for Fast Sum, all DC signals from the detector after the preamp added together.<\/em><\/strong><\/p>\n

The Track Loss Detector, (TLD) is used as a capture aid for the radial tracking.<\/em><\/strong>
\nTrack Loss is detected when:<\/em><\/strong><\/p>\n

1. Less HF signal is present, from the HF Detector<\/em><\/strong>
\n2. More light comes from the plate, derived from the FS signal<\/em><\/strong>
\n3. and no Dropout signal occurs, also from the HF detector.<\/em><\/strong>
\nOn some plates, they “forgot” to write a piece of pits on the track, the so-called “white dropout”.<\/em><\/strong><\/p>\n

The circuit takes the average FS signal, and stores it in C2204, using switch (transistor) 6204. Via resistor division 3215, 3217 it is checked whether “more light” comes back.”<\/em><\/strong><\/p>\n

Apparatus for enabling an autotrack circuit of an optical disc reading apparatus during the positioning of a read beam<\/a><\/span><\/p>\n

 <\/p>\n

\"\"<\/p>\n

 <\/p>\n

\"\"<\/p>\n

“Thanks again for the repair! It’s been a tough one but now it plays great again!<\/em><\/strong>
\nI know there shouldn’t be any difference with the CD 100 but I feel like this one sounds even better”<\/em><\/strong><\/div>\n
<\/div>\n
<\/div>\n
“Nogmaals super bedankt voor de reparatie! Het is een zware dobber geweest maar nu speelt hij weer fantastisch!<\/div>\n
Ik weet dat er eigenlijk geen verschil zou moeten zijn met de CD 100 maar voor mijn gevoel klinkt deze nog mooier”<\/div>\n
<\/div>\n
<\/div>\n","protected":false},"excerpt":{"rendered":"

CD 303 , won’t play discs ,     interconnect board Already added cinch chassis connectors         There has been done a lot of resoldering already Won’t read discs, output Reed-relais...<\/p>\n","protected":false},"author":1,"featured_media":16094,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[92,121,248,3],"tags":[],"class_list":["post-16095","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cd-303","category-philips","category-refurbished","category-repair"],"yoast_head":"\nCD 303 with Multiple Faults , Repair & Refurbisch - Bram Jacobse<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.bramjacobse.nl\/wordpress\/?p=16095\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"CD 303 with Multiple Faults , Repair & Refurbisch - Bram Jacobse\" \/>\n<meta property=\"og:description\" content=\"CD 303 , won’t play discs ,     interconnect board Already added cinch chassis connectors         There has been done a lot of resoldering already Won’t read discs, output Reed-relais...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.bramjacobse.nl\/wordpress\/?p=16095\" \/>\n<meta property=\"og:site_name\" content=\"Bram Jacobse\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-02T18:06:34+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-07-08T19:44:41+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2025\/06\/CD_303_20250602_02.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"1280\" \/>\n\t<meta property=\"og:image:height\" content=\"590\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Bram\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Bram\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"10 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?p=16095#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?p=16095\"},\"author\":{\"name\":\"Bram\",\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/#\\\/schema\\\/person\\\/046607e546e3a7190b34f7793abbe6fe\"},\"headline\":\"CD 303 with Multiple Faults , Repair & Refurbisch\",\"datePublished\":\"2025-06-02T18:06:34+00:00\",\"dateModified\":\"2025-07-08T19:44:41+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?p=16095\"},\"wordCount\":421,\"publisher\":{\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/#\\\/schema\\\/person\\\/046607e546e3a7190b34f7793abbe6fe\"},\"image\":{\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?p=16095#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/CD_303_20250602_02.jpeg\",\"articleSection\":[\"CD 303\",\"Philips\",\"Refurbished\",\"Repair\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?p=16095\",\"url\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?p=16095\",\"name\":\"CD 303 with Multiple Faults , Repair & Refurbisch - Bram Jacobse\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?p=16095#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?p=16095#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/CD_303_20250602_02.jpeg\",\"datePublished\":\"2025-06-02T18:06:34+00:00\",\"dateModified\":\"2025-07-08T19:44:41+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?p=16095#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?p=16095\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?p=16095#primaryimage\",\"url\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/CD_303_20250602_02.jpeg\",\"contentUrl\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/CD_303_20250602_02.jpeg\",\"width\":1280,\"height\":590},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?p=16095#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"CD 303 with Multiple Faults , Repair & Refurbisch\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/#website\",\"url\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/\",\"name\":\"Bram Jacobse : Tinkering CD Players & Digital Audio\",\"description\":\"Tinkering CD Players & Digital Audio\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/#\\\/schema\\\/person\\\/046607e546e3a7190b34f7793abbe6fe\"},\"alternateName\":\"Bram Jacobse : Tinkering CD Players & Digital Audio\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/#\\\/schema\\\/person\\\/046607e546e3a7190b34f7793abbe6fe\",\"name\":\"Bram\",\"logo\":{\"@id\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/#\\\/schema\\\/person\\\/image\\\/\"},\"url\":\"https:\\\/\\\/www.bramjacobse.nl\\\/wordpress\\\/?author=1\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"CD 303 with Multiple Faults , Repair & Refurbisch - Bram Jacobse","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=16095","og_locale":"en_US","og_type":"article","og_title":"CD 303 with Multiple Faults , Repair & Refurbisch - Bram Jacobse","og_description":"CD 303 , won’t play discs ,     interconnect board Already added cinch chassis connectors         There has been done a lot of resoldering already Won’t read discs, output Reed-relais...","og_url":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=16095","og_site_name":"Bram Jacobse","article_published_time":"2025-06-02T18:06:34+00:00","article_modified_time":"2025-07-08T19:44:41+00:00","og_image":[{"width":1280,"height":590,"url":"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2025\/06\/CD_303_20250602_02.jpeg","type":"image\/jpeg"}],"author":"Bram","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Bram","Est. reading time":"10 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=16095#article","isPartOf":{"@id":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=16095"},"author":{"name":"Bram","@id":"https:\/\/www.bramjacobse.nl\/wordpress\/#\/schema\/person\/046607e546e3a7190b34f7793abbe6fe"},"headline":"CD 303 with Multiple Faults , Repair & Refurbisch","datePublished":"2025-06-02T18:06:34+00:00","dateModified":"2025-07-08T19:44:41+00:00","mainEntityOfPage":{"@id":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=16095"},"wordCount":421,"publisher":{"@id":"https:\/\/www.bramjacobse.nl\/wordpress\/#\/schema\/person\/046607e546e3a7190b34f7793abbe6fe"},"image":{"@id":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=16095#primaryimage"},"thumbnailUrl":"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2025\/06\/CD_303_20250602_02.jpeg","articleSection":["CD 303","Philips","Refurbished","Repair"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=16095","url":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=16095","name":"CD 303 with Multiple Faults , Repair & Refurbisch - Bram Jacobse","isPartOf":{"@id":"https:\/\/www.bramjacobse.nl\/wordpress\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=16095#primaryimage"},"image":{"@id":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=16095#primaryimage"},"thumbnailUrl":"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2025\/06\/CD_303_20250602_02.jpeg","datePublished":"2025-06-02T18:06:34+00:00","dateModified":"2025-07-08T19:44:41+00:00","breadcrumb":{"@id":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=16095#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.bramjacobse.nl\/wordpress\/?p=16095"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=16095#primaryimage","url":"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2025\/06\/CD_303_20250602_02.jpeg","contentUrl":"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2025\/06\/CD_303_20250602_02.jpeg","width":1280,"height":590},{"@type":"BreadcrumbList","@id":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=16095#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.bramjacobse.nl\/wordpress"},{"@type":"ListItem","position":2,"name":"CD 303 with Multiple Faults , Repair & Refurbisch"}]},{"@type":"WebSite","@id":"https:\/\/www.bramjacobse.nl\/wordpress\/#website","url":"https:\/\/www.bramjacobse.nl\/wordpress\/","name":"Bram Jacobse : Tinkering CD Players & Digital Audio","description":"Tinkering CD Players & Digital Audio","publisher":{"@id":"https:\/\/www.bramjacobse.nl\/wordpress\/#\/schema\/person\/046607e546e3a7190b34f7793abbe6fe"},"alternateName":"Bram Jacobse : Tinkering CD Players & Digital Audio","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.bramjacobse.nl\/wordpress\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":["Person","Organization"],"@id":"https:\/\/www.bramjacobse.nl\/wordpress\/#\/schema\/person\/046607e546e3a7190b34f7793abbe6fe","name":"Bram","logo":{"@id":"https:\/\/www.bramjacobse.nl\/wordpress\/#\/schema\/person\/image\/"},"url":"https:\/\/www.bramjacobse.nl\/wordpress\/?author=1"}]}},"_links":{"self":[{"href":"https:\/\/www.bramjacobse.nl\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/16095","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bramjacobse.nl\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bramjacobse.nl\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bramjacobse.nl\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bramjacobse.nl\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=16095"}],"version-history":[{"count":0,"href":"https:\/\/www.bramjacobse.nl\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/16095\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bramjacobse.nl\/wordpress\/index.php?rest_route=\/wp\/v2\/media\/16094"}],"wp:attachment":[{"href":"https:\/\/www.bramjacobse.nl\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=16095"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bramjacobse.nl\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=16095"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bramjacobse.nl\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=16095"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}