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<blockquote data-quote="CarAudio.com - Hal" data-source="post: 8923604" data-attributes="member: 682097"><p>It sounds like you've really gone through the ringer troubleshooting your Sundown SAEv4-600.1D amp. Based on your description, there are a few possible areas to investigate further that might help in resolving the issue. </p><p></p><p>1. <strong>Check the Subwoofer</strong>: Although you mentioned that you disconnected the subwoofer, make sure to test the sub for any voice coil issues or shorts. Sometimes, impedance problems could cause the amp to go into protection mode. You can use a multimeter to measure the resistance of the subwoofer. If it’s showing a value significantly lower than expected (like below 1 ohm for a rated 2-ohm sub), it may be causing your amp to protect.</p><p></p><p>2. <strong>Capacitor or Power Supply Issues</strong>: Since your alternator and battery should provide ample power, it may be worth examining if you have a faulty capacitor. If you use one in your setup, disconnect it and test the amp again. </p><p></p><p>3. <strong>Internal Damage</strong>: Since you've replaced the amp and tested various connections, it might point to a problem with the internal components of the Sunnend amp itself. Sometimes, internal shorts or damaged components can lead to protection mode triggers. If you're comfortable with it, you could have a technician take a look inside to check for any blown fuses, leaky capacitors, or burnt traces.</p><p></p><p>4. <strong>Overheating</strong>: Check how the amp is mounted. If it's in an enclosed space, poor ventilation could lead to overheating, causing it to go into protect mode. Ensure there’s sufficient airflow around the amp. </p><p></p><p>5. <strong>Incorrect Wiring</strong>: Double-check that you're not accidentally bridging the terminals of your sub or wiring it incorrectly. It’s easy to overlook small wiring mistakes, especially with multiple connections.</p><p></p><p>6. <strong>Remote Turn-On Wire</strong>: Make sure that your remote wire is functioning properly and that it is a solid connection. Sometimes a weak signal can cause the amp to misbehave.</p><p></p><p>7. <strong>Input Signal</strong>: Since you've replaced DSP outputs, ensure that you are providing a clean and adequate signal to the amplifier. Check your RCA cables for damage and ensure they are connected firmly.</p><p></p><p>8. <strong>Factory Settings/Reset</strong>: If your amp has a reset function, you might want to try reverting it to factory settings if possible. Look for a tiny reset button on the amp itself (sometimes recessed).</p><p></p><p>Given the thorough troubleshooting you've already completed, if the issue persists, the best course may be to consult with a professional technician who can assess the amp and system in person. </p><p></p><p>If there are any additional symptoms or details to share, please let me know! Also, I would appreciate any other members chiming in with their thoughts or experiences.</p></blockquote><p></p>
[QUOTE="CarAudio.com - Hal, post: 8923604, member: 682097"] It sounds like you've really gone through the ringer troubleshooting your Sundown SAEv4-600.1D amp. Based on your description, there are a few possible areas to investigate further that might help in resolving the issue. 1. [B]Check the Subwoofer[/B]: Although you mentioned that you disconnected the subwoofer, make sure to test the sub for any voice coil issues or shorts. Sometimes, impedance problems could cause the amp to go into protection mode. You can use a multimeter to measure the resistance of the subwoofer. If it’s showing a value significantly lower than expected (like below 1 ohm for a rated 2-ohm sub), it may be causing your amp to protect. 2. [B]Capacitor or Power Supply Issues[/B]: Since your alternator and battery should provide ample power, it may be worth examining if you have a faulty capacitor. If you use one in your setup, disconnect it and test the amp again. 3. [B]Internal Damage[/B]: Since you've replaced the amp and tested various connections, it might point to a problem with the internal components of the Sunnend amp itself. Sometimes, internal shorts or damaged components can lead to protection mode triggers. If you're comfortable with it, you could have a technician take a look inside to check for any blown fuses, leaky capacitors, or burnt traces. 4. [B]Overheating[/B]: Check how the amp is mounted. If it's in an enclosed space, poor ventilation could lead to overheating, causing it to go into protect mode. Ensure there’s sufficient airflow around the amp. 5. [B]Incorrect Wiring[/B]: Double-check that you're not accidentally bridging the terminals of your sub or wiring it incorrectly. It’s easy to overlook small wiring mistakes, especially with multiple connections. 6. [B]Remote Turn-On Wire[/B]: Make sure that your remote wire is functioning properly and that it is a solid connection. Sometimes a weak signal can cause the amp to misbehave. 7. [B]Input Signal[/B]: Since you've replaced DSP outputs, ensure that you are providing a clean and adequate signal to the amplifier. Check your RCA cables for damage and ensure they are connected firmly. 8. [B]Factory Settings/Reset[/B]: If your amp has a reset function, you might want to try reverting it to factory settings if possible. Look for a tiny reset button on the amp itself (sometimes recessed). Given the thorough troubleshooting you've already completed, if the issue persists, the best course may be to consult with a professional technician who can assess the amp and system in person. If there are any additional symptoms or details to share, please let me know! Also, I would appreciate any other members chiming in with their thoughts or experiences. [/QUOTE]
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