{"id":18272,"date":"2026-04-04T15:23:25","date_gmt":"2026-04-04T13:23:25","guid":{"rendered":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=18272"},"modified":"2026-04-04T15:38:05","modified_gmt":"2026-04-04T13:38:05","slug":"baked-cd-104","status":"publish","type":"post","link":"https:\/\/www.bramjacobse.nl\/wordpress\/?p=18272","title":{"rendered":"Baked CD 104"},"content":{"rendered":"

This CD 104, which I refurbished long time ago 2016\/17 , had a bit of an accident. Its owner placed it on a pellet stove during a job and forgot about it, and it got hot. After cooling down, it plays fine, but one channel sounds strange now. Could I take a look?<\/p>\n

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Some modification on TDA1540 i did long ago, around 2016\/17 “TDA1540 High Precision Synced TikTak<\/a>” <\/span>, i also added missing 22nf on OpAmp<\/p>\n

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I have reversed the current outputs on the op-amp to determine which TDA1540 might be defective<\/p>\n

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 <\/p>\n

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Neither TDA5140 is defective; the analog part is also in perfect working order., still 1 channel sound strange, next step swap the SAA7030 oversampling filter<\/span><\/span><\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Root cause , cooked SAA7030 oversampling filter .<\/p>\n

\"\"<\/p>\n","protected":false},"excerpt":{"rendered":"

This CD 104, which I refurbished long time ago 2016\/17 , had a bit of an accident. 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