{"id":30,"date":"2006-08-10T16:30:29","date_gmt":"2006-08-10T15:30:29","guid":{"rendered":"http:\/\/www.sonicpenguins.com\/blog\/2006\/08\/10\/fun-with-the-cpu-board\/"},"modified":"2006-08-15T16:43:51","modified_gmt":"2006-08-15T15:43:51","slug":"fun-with-the-cpu-board","status":"publish","type":"post","link":"http:\/\/www.sonicpenguins.com\/blog\/2006\/08\/10\/fun-with-the-cpu-board\/","title":{"rendered":"Fun with the CPU board"},"content":{"rendered":"<p>Hidden deep within the secret\u00a0Star Trek: The Next Generation menus is an awesome testing thing that beeps when you press the switches on the playfield.. ok, so it&#8217;s really easy to find and has about 4 pages dedicated to it in the menu.. anyway.. the switch matrix is a square grid of about 64 switches (actually I think it&#8217;s a bit more) and one column of those switches isn&#8217;t working.<\/p>\n<p>I&#8217;ve been over the playfield and tested all the cables and everything there seems ok, so I decided that one of the chips on the CPU board near the switch matrix must have been fried.<\/p>\n<p>It&#8217;s a ULN2803A if that means anything to you?! It&#8217;s kinda small and black and it&#8217;s got legs.. like a spider.. only spiders don&#8217;t like it when you solder them into pinball machines and run high voltages through them.. also they don&#8217;t have silver legs.. but other than that.. extremely spider like \ud83d\ude09<\/p>\n<p>Rachel is awesome and she drove down to Maplin while I was at work and picked up the chip for me! Yeah Rachel!!<\/p>\n<p>When I got home I desoldered the old chip, but I just couldn&#8217;t get it off the board and ended up cutting it&#8217;s legs off (spiders definatly wouldn&#8217;t like that) and some how managed to stab myself with the legs of the chip right under my thumbnail! (ow!) .. but after I rinsed off all the blood, I powered on the machine and now the switch matrix column that was bust works! \ud83d\ude42<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hidden deep within the secret\u00a0Star Trek: The Next Generation menus is an awesome testing thing that beeps when you press the switches on the playfield.. ok, so it&#8217;s really easy to find and has about 4 pages dedicated to it in the menu.. anyway.. the switch matrix is a square grid of about 64 switches [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_s2mail":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-30","post","type-post","status-publish","format-standard","hentry","category-pinball"],"_links":{"self":[{"href":"http:\/\/www.sonicpenguins.com\/blog\/wp-json\/wp\/v2\/posts\/30","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.sonicpenguins.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.sonicpenguins.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.sonicpenguins.com\/blog\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"http:\/\/www.sonicpenguins.com\/blog\/wp-json\/wp\/v2\/comments?post=30"}],"version-history":[{"count":0,"href":"http:\/\/www.sonicpenguins.com\/blog\/wp-json\/wp\/v2\/posts\/30\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.sonicpenguins.com\/blog\/wp-json\/wp\/v2\/media?parent=30"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.sonicpenguins.com\/blog\/wp-json\/wp\/v2\/categories?post=30"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.sonicpenguins.com\/blog\/wp-json\/wp\/v2\/tags?post=30"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}