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Tech Head - The Technology Section
The Work Bench and Soldering Station
Humming subwoofer
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<blockquote data-quote="Terryl" data-source="post: 1086840" data-attributes="member: 369937"><p>A bad electrolytic cap can sometimes be located by the shape of it's top, when they go bad they sometimes dome or bulge up at the tops.</p><p></p><p>Look for the largest can type caps, these are close to the power supply transformer, but be very careful as these caps can carry a charge after the unit is unplugged, wait 10 to 15 minuets before trying to remove one.</p><p></p><p>Try and replace with the same rating in mFd and voltage, you can always go with a higher rating and or voltage but not less.</p><p></p><p>And if your unit has a switching power supply (no large power transformer) don't try to fix it, these types of power supply are very dangerous to work on unless you know what your doing.</p><p></p><p>Example of bad vs good caps.</p><p></p><p>[ATTACH=full]129678[/ATTACH]</p></blockquote><p></p>
[QUOTE="Terryl, post: 1086840, member: 369937"] A bad electrolytic cap can sometimes be located by the shape of it's top, when they go bad they sometimes dome or bulge up at the tops. Look for the largest can type caps, these are close to the power supply transformer, but be very careful as these caps can carry a charge after the unit is unplugged, wait 10 to 15 minuets before trying to remove one. Try and replace with the same rating in mFd and voltage, you can always go with a higher rating and or voltage but not less. And if your unit has a switching power supply (no large power transformer) don't try to fix it, these types of power supply are very dangerous to work on unless you know what your doing. Example of bad vs good caps. [ATTACH type="full"]129678[/ATTACH] [/QUOTE]
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