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DIY for NAD 7020 Amplifier
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<blockquote data-quote="Ampdog" data-source="post: 763172" data-attributes="member: 144"><p>I am not so sceptical regarding capacitors. Capacitors (including electrolytics) of the 90's were already pretty modern, and did not go faulty/dry-out nearly as often as from say the 50s. Still that does not exclude weak/faulty ones, but then from poor quality, not mere age.</p><p></p><p>But if one does not have a testing device - a multimeter can also serve - the low expense might be considered worthwhile. I am simply stating that this idea of "replacing caps" per se seems to have become a fixation rather than supported by facts. {How often have those servicing amplifiers come across a confirmed bad modern capacitor in their careers? Never, from this person. E.g. electrolytic caps in my s.s. amplifier built about 1997 are still on par despite the unit being on permanently excluding power cuts. (They are Hitanos)]</p><p></p><p>Caveat: Capacitors salvaged from PCs. They are some of the best examples of built-in obsolescence to be found these days. </p></blockquote><p></p>
[QUOTE="Ampdog, post: 763172, member: 144"] I am not so sceptical regarding capacitors. Capacitors (including electrolytics) of the 90's were already pretty modern, and did not go faulty/dry-out nearly as often as from say the 50s. Still that does not exclude weak/faulty ones, but then from poor quality, not mere age. But if one does not have a testing device - a multimeter can also serve - the low expense might be considered worthwhile. I am simply stating that this idea of "replacing caps" per se seems to have become a fixation rather than supported by facts. {How often have those servicing amplifiers come across a confirmed bad modern capacitor in their careers? Never, from this person. E.g. electrolytic caps in my s.s. amplifier built about 1997 are still on par despite the unit being on permanently excluding power cuts. (They are Hitanos)] Caveat: Capacitors salvaged from PCs. They are some of the best examples of built-in obsolescence to be found these days. [/QUOTE]
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