Nintendo Entertainment System Capacitor Replacement Guide: Difference between revisions
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The NES uses robust Japanese capacitors, but after 35+ years, original parts are often dried out or leaky, especially in high-heat areas near the voltage regulator and RF modulator. | The NES uses robust Japanese capacitors, but after 35+ years, original parts are often dried out or leaky, especially in high-heat areas near the voltage regulator and RF modulator. | ||
== | == Visual Inspection & Failure Signs == | ||
* '''Bulging or leaking cans''' – especially C6 (main filter) and C22 (audio/video decoupling). | * '''Bulging or leaking cans''' – especially C6 (main filter) and C22 (audio/video decoupling). | ||
* '''Corrosion or brown residue''' – at the base of capacitors, often near the power supply section. | * '''Corrosion or brown residue''' – at the base of capacitors, often near the power supply section. | ||
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If any capacitor shows visible failure, it’s best practice to replace '''all electrolytic capacitors''' on the mainboard. | If any capacitor shows visible failure, it’s best practice to replace '''all electrolytic capacitors''' on the mainboard. | ||
== | == NES Mainboard Capacitor List == | ||
The NES mainboard (NES-CPU-xx) uses through-hole aluminium electrolytics. Always verify values against your board’s silkscreen, as minor revisions exist. | The NES mainboard (NES-CPU-xx) uses through-hole aluminium electrolytics. Always verify values against your board’s silkscreen, as minor revisions exist. | ||
=== | === NES-CPU-05/07/09 Mainboard === | ||
{| class="wikitable styled-table" style="width:100%; text-align:center;" | {| class="wikitable styled-table" style="width:100%; text-align:center;" | ||
|+'''NES Electrolytic Capacitors''' | |+'''NES Electrolytic Capacitors''' | ||
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|} | |} | ||
=== | === Additional Notes === | ||
* Some revisions may use slightly different values for C7 or C25 (e.g., 330 µF or 220 µF). Always match or slightly exceed voltage ratings. | * Some revisions may use slightly different values for C7 or C25 (e.g., 330 µF or 220 µF). Always match or slightly exceed voltage ratings. | ||
* Ceramic and tantalum capacitors (e.g., C11, C13) rarely fail and do not need routine replacement. | * Ceramic and tantalum capacitors (e.g., C11, C13) rarely fail and do not need routine replacement. | ||
* If your NES has severe corrosion or liquid damage, inspect for lifted pads or broken traces before recapping. | * If your NES has severe corrosion or liquid damage, inspect for lifted pads or broken traces before recapping. | ||
== | == Replacement Tips == | ||
* Use '''105°C rated''' capacitors for maximum longevity. | * Use '''105°C rated''' capacitors for maximum longevity. | ||
* Observe polarity: the '''long lead is positive''', and the negative stripe on the body must match the board’s marking. | * Observe polarity: the '''long lead is positive''', and the negative stripe on the body must match the board’s marking. | ||
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* After recapping, test the NES with a known-good power supply and game cartridge. | * After recapping, test the NES with a known-good power supply and game cartridge. | ||
== | == See Also == | ||
* [[Nintendo Entertainment System]] | * [[Nintendo Entertainment System]] | ||
[[Category: Nintendo]] | [[Category: Nintendo]] | ||