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Audio and Video Talk
The Vintage Audio Section
Pioneer SA-940 integrated amplifier LED repair
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<blockquote data-quote="El Sid" data-source="post: 902453" data-attributes="member: 18550"><p>It's pretty basic board:</p><p><img src="https://i.imgur.com/e7i3zmO.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>If only one channel's not working then it's probably one of the IR2431 ICs.</p><p></p><p>If nothing's working it could be one of the power wires, the Vref wire or both ICs.</p><p></p><p>(Or something else!)</p><p></p><p>Should be pretty easy to fix. If an IC, they <em>seem</em> to be available: http://www.surplus-electronics-sales.com/index.php?main_page=product_info&products_id=814 amonst other places</p></blockquote><p></p>
[QUOTE="El Sid, post: 902453, member: 18550"] It's pretty basic board: [IMG]https://i.imgur.com/e7i3zmO.jpg[/IMG] If only one channel's not working then it's probably one of the IR2431 ICs. If nothing's working it could be one of the power wires, the Vref wire or both ICs. (Or something else!) Should be pretty easy to fix. If an IC, they [i]seem[/i] to be available: http://www.surplus-electronics-sales.com/index.php?main_page=product_info&products_id=814 amonst other places [/QUOTE]
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Audio and Video Talk
The Vintage Audio Section
Pioneer SA-940 integrated amplifier LED repair
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