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Anyone having issues with S494P PWM switching chips in power supplies?
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<blockquote data-quote="o. l. t." data-source="post: 6653447" data-attributes="member: 569202"><p>I have a Planet Audio 4 channel that was playing fine and simply cut off. It does not power up at all so I popped the top an traced the fault to the S494P PWM chip where the ign +12 voltage stops at pin #12 vcc input.</p><p></p><p>Imagine that, a pulse width modulation chip that is used in switching power supplies as the main building block, and me with an amp that won't turn on..... I bet that's never happened before. //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif</p><p></p><p>So anywho, I've been out of the game for a good while, but looks like I remember everything. The repair won't be an issue, just drop a new IC in it.</p><p></p><p>Now my question.......</p><p></p><p>#1- anyone else have issues with this IC?</p><p></p><p>#2- anyone have a recommended distributor that'll ship me just one hassle free?</p><p></p><p>Thanks! //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif</p><p></p><p><img src="http://i32.photobucket.com/albums/d5/audiogodz1/stuff/Screenshot2010-01-10at104303PM.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><img src="http://i32.photobucket.com/albums/d5/audiogodz1/stuff/Screenshot2010-01-10at104253PM.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><img src="http://i32.photobucket.com/albums/d5/audiogodz1/stuff/IMG_0334.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><img src="http://i32.photobucket.com/albums/d5/audiogodz1/stuff/IMG_0337.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="o. l. t., post: 6653447, member: 569202"] I have a Planet Audio 4 channel that was playing fine and simply cut off. It does not power up at all so I popped the top an traced the fault to the S494P PWM chip where the ign +12 voltage stops at pin #12 vcc input. Imagine that, a pulse width modulation chip that is used in switching power supplies as the main building block, and me with an amp that won't turn on..... I bet that's never happened before. [IMG]//content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif[/IMG] So anywho, I've been out of the game for a good while, but looks like I remember everything. The repair won't be an issue, just drop a new IC in it. Now my question....... #1- anyone else have issues with this IC? #2- anyone have a recommended distributor that'll ship me just one hassle free? Thanks! [IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG] [IMG]http://i32.photobucket.com/albums/d5/audiogodz1/stuff/Screenshot2010-01-10at104303PM.png[/IMG] [IMG]http://i32.photobucket.com/albums/d5/audiogodz1/stuff/Screenshot2010-01-10at104253PM.png[/IMG] [IMG]http://i32.photobucket.com/albums/d5/audiogodz1/stuff/IMG_0334.jpg[/IMG] [IMG]http://i32.photobucket.com/albums/d5/audiogodz1/stuff/IMG_0337.jpg[/IMG] [/QUOTE]
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Anyone having issues with S494P PWM switching chips in power supplies?
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