{"id":95,"date":"2017-09-23T10:24:38","date_gmt":"2017-09-23T10:24:38","guid":{"rendered":"http:\/\/www.dabbler.dk\/?p=95"},"modified":"2019-05-11T17:33:51","modified_gmt":"2019-05-11T17:33:51","slug":"commodore-64-sn-u-k-b1697889-repair-log","status":"publish","type":"post","link":"https:\/\/www.dabbler.dk\/index.php\/2017\/09\/23\/commodore-64-sn-u-k-b1697889-repair-log\/","title":{"rendered":"Commodore 64 s\/n U.K.B1697889 Repair Log"},"content":{"rendered":"<p><em><strong>Do you have a defective \/ non working Commodore 64 breadbin?<\/strong><\/em><br \/>\n<em><strong>I probably want it!<br \/>\n<\/strong><\/em><em><strong>Make me an offer on <a href=\"mailto:gert@dabbler.dk\">gert@dabbler.dk<\/a> and state if you want to sell it or swap it for this working one (you will have to pay my costs in parts and shipping &#8211; but not my time) \ud83d\ude42<\/strong><\/em><\/p>\n<p>&nbsp;<\/p>\n<p><strong>Purchased&nbsp;8th August 2017 on eBay:<\/strong><\/p>\n<ul>\n<li>Breadbin: SER.NO.U.K.B1697889<\/li>\n<li>PSU: Part no. 251 053-11<\/li>\n<li>Datasette: C2N, Serial No 01202217, Made in Taiwan<\/li>\n<li>Motherboard: S\/N UA196145, assy No. 250407, artwork no. 251137, rev. B. Made in Hong Kong<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><strong>Chips:<\/strong><\/p>\n<ul>\n<li>U1: CIA, MOS 6526, week 39, 1984<\/li>\n<li>U2: CIA, MOS 6526, week 39, 1984<\/li>\n<li>U3: BASIC ROM, MOS 901226-01, week 28, 1984<\/li>\n<li>U4: Kernal ROM, MOS 901227-03, week 36, 1984<\/li>\n<li>U5: Character ROM, MOS 901225-01, (no week\/year)<\/li>\n<li>U6: Color RAM, MM2114N, week 32, 1984<\/li>\n<li>U7: CPU, MOS 6510, week 27, 1984<\/li>\n<li>U17: PLA, MOS 906114-01, week 35, 1984<\/li>\n<li>U18: SID, MOS 6581, week 34, 1984. Defective &#8211; replaced with 6581R4AR, week 14, 1990<\/li>\n<li>U19, VIC2, MOS 6569R3, week 39, 1984<\/li>\n<li>RAM, 7*OKI M3764-20, 1*Sharp LH2164-15<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><strong>Sellers description:<\/strong><\/p>\n<p>Commodore 64 Computer C64 Breadbin With Power &amp; Datasette Faulty Spares &amp; Repairs BUY NOW.<br \/>\nGreet Computer found in job lot of items and will sadly not power on ?<br \/>\nMaybe easy fix for someone or at least loads of spares. Comes with power pack and datasette only.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Repair log:<\/strong><\/p>\n<ul>\n<li>9v, 1.5A fuse in PSU blown, changed<\/li>\n<li>SID defective, black screen. Works w\/o sound when removed. Replaced with spare<\/li>\n<li>PSU 5v rail rebuild for future proofing:<br \/>\n7805 voltage regulator, original electrolytic capacitor and a few other passive components&nbsp; replaced with 3A buck converter with 4700uF 25v electrolytic capacitor on input. Patched in after diode rectifier.<\/li>\n<li>Re-capped motherboard<\/li>\n<li>Future proofed the larger MOS chips which heat sinks<\/li>\n<li>Cleaned and lubricated datasette<\/li>\n<li>Re-capped datasette<\/li>\n<li>Fixed ticking noice from datasette when fast forwarding with a piece of heat shrink tube (se picture)<br \/>\n<a href=\"http:\/\/www.dabbler.dk\/wp-content\/uploads\/2017\/09\/20170810_213942.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"169\" height=\"300\" class=\"alignnone wp-image-100 size-medium\" alt=\"\" src=\"http:\/\/www.dabbler.dk\/wp-content\/uploads\/2017\/09\/20170810_213942-169x300.jpg\" srcset=\"https:\/\/www.dabbler.dk\/wp-content\/uploads\/2017\/09\/20170810_213942-169x300.jpg 169w, https:\/\/www.dabbler.dk\/wp-content\/uploads\/2017\/09\/20170810_213942-768x1365.jpg 768w, https:\/\/www.dabbler.dk\/wp-content\/uploads\/2017\/09\/20170810_213942-576x1024.jpg 576w\" sizes=\"auto, (max-width: 169px) 100vw, 169px\" \/><\/a><\/li>\n<li>Changed both drive belts in datasette<\/li>\n<li>Over-voltage protection of 5v PSU-rail on motherboard (installed P6KE6.8CA)<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><strong>Costs (total DKK 875):<\/strong><\/p>\n<ul>\n<li>Breadbin, PSU and datasette: DKK 525.-<\/li>\n<li>SID: DKK 250,-<\/li>\n<li>Misc.: DKK 100,-<\/li>\n<\/ul>\n<p>Let me know if you will buy or swap with this unit \ud83d\ude42<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Do you have a defective \/ non working Commodore 64 breadbin? I probably want it! Make me an offer on gert@dabbler.dk and state if you want to sell it or swap it for this working one (you will have to pay my costs in parts and shipping &#8211; but not my time) \ud83d\ude42 &nbsp; Purchased&nbsp;8th &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.dabbler.dk\/index.php\/2017\/09\/23\/commodore-64-sn-u-k-b1697889-repair-log\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Commodore 64 s\/n U.K.B1697889 Repair Log&#8221;<\/span><\/a><\/p>\n","protected":false},"author":3,"featured_media":203,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7,6],"tags":[14,13,15],"class_list":["post-95","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-commodore","category-hardware","tag-breadbin","tag-commodore-64","tag-repair-log"],"_links":{"self":[{"href":"https:\/\/www.dabbler.dk\/index.php\/wp-json\/wp\/v2\/posts\/95","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dabbler.dk\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dabbler.dk\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dabbler.dk\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dabbler.dk\/index.php\/wp-json\/wp\/v2\/comments?post=95"}],"version-history":[{"count":16,"href":"https:\/\/www.dabbler.dk\/index.php\/wp-json\/wp\/v2\/posts\/95\/revisions"}],"predecessor-version":[{"id":207,"href":"https:\/\/www.dabbler.dk\/index.php\/wp-json\/wp\/v2\/posts\/95\/revisions\/207"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dabbler.dk\/index.php\/wp-json\/wp\/v2\/media\/203"}],"wp:attachment":[{"href":"https:\/\/www.dabbler.dk\/index.php\/wp-json\/wp\/v2\/media?parent=95"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dabbler.dk\/index.php\/wp-json\/wp\/v2\/categories?post=95"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dabbler.dk\/index.php\/wp-json\/wp\/v2\/tags?post=95"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}