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Help with an OUTPUT transistor!
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<blockquote data-quote="Ge0" data-source="post: 5558617" data-attributes="member: 582277"><p>The screen may be powered directly off the 12V feed coming into the amp. It will light up and run even though your secondary power rails are fried.</p><p></p><p>The actual amplifier section is run off of higher voltages created by the switched mode power supply (SMPS). I rarely see the actual SMPS controller fry when the FETs go bad. Some times you just replace all the FETs on both sides of the primary and you're good to go. Other times output transistors also fried (secondary side) which probably took out the power supply FETs to begin with.</p><p></p><p>Got a multimeter?</p><p></p><p>Ge0</p></blockquote><p></p>
[QUOTE="Ge0, post: 5558617, member: 582277"] The screen may be powered directly off the 12V feed coming into the amp. It will light up and run even though your secondary power rails are fried. The actual amplifier section is run off of higher voltages created by the switched mode power supply (SMPS). I rarely see the actual SMPS controller fry when the FETs go bad. Some times you just replace all the FETs on both sides of the primary and you're good to go. Other times output transistors also fried (secondary side) which probably took out the power supply FETs to begin with. Got a multimeter? Ge0 [/QUOTE]
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Help with an OUTPUT transistor!
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