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<blockquote data-quote="MakeshiftAudio" data-source="post: 6164535" data-attributes="member: 608963">No, they are not bullet proof, they have problems all the time.That is one of the SMPS output transformers.Twist it a small bit to the right or left, be very careful and don&#039;t apply too much pressure, it doesn&#039;t need much, about 1 degree or half a degree turn, there is a tendency to&nbsp; scrape the epoxy coating off of the magnet wire and short out windings!This happens on occasion, could be a cold joint, or a shorted winding. If you already (PROPERLY) reflowed the joints connecting to the transformer, it&#039;s shorted somewhere. //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif Maybe in HV, LV or feedback windings. //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gifEdit: As to why it&#039;s sounding like the sound is only half there, is well... Because it is only half there. Each transformer is made for one side of the rail. Each one has it&#039;s own rail after it&#039;s rectified and charges the filter capacitors, since it is all based from a reference voltage, and the HV filter caps make a voltage divider by being connected in series. Choppy description, but the power supply is only making one rail, positive or negative I don&#039;t know, but the sub(s) is/are only being moved in or out, not both, and therefor half the power is being applied.Edit 2: DO NOT TOUCH THE INTERNAL COMPONENTS WHILE THE AMP IS HOOKED TO THE BATTERY THERE CAN BE LETHAL VOLTAGE AND POSSIBLY A SUBSTANTIAL AMOUNT OF POWER STORED. ie you touch something, the voltage creates an arc to you since there is a voltage difference, then the filter capacitors discharge through you as well. The filter capacitors can also be charged for some time afterwords, depending on the design of the amp.</blockquote>

[QUOTE="MakeshiftAudio, post: 6164535, member: 608963"] No, they are not bullet proof, they have problems all the time. That is one of the SMPS output transformers. Twist it a small bit to the right or left, be very careful and don't apply too much pressure, it doesn't need much, about 1 degree or half a degree turn, there is a tendency to scrape the epoxy coating off of the magnet wire and short out windings! This happens on occasion, could be a cold joint, or a shorted winding. If you already (PROPERLY) reflowed the joints connecting to the transformer, it's shorted somewhere. [IMG]//content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif[/IMG] Maybe in HV, LV or feedback windings. [IMG]//content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif[/IMG] Edit: As to why it's sounding like the sound is only half there, is well... Because it is only half there. Each transformer is made for one side of the rail. Each one has it's own rail after it's rectified and charges the filter capacitors, since it is all based from a reference voltage, and the HV filter caps make a voltage divider by being connected in series. Choppy description, but the power supply is only making one rail, positive or negative I don't know, but the sub(s) is/are only being moved in or out, not both, and therefor half the power is being applied. Edit 2: [B]DO NOT TOUCH THE INTERNAL COMPONENTS WHILE THE AMP IS HOOKED TO THE BATTERY THERE CAN BE LETHAL VOLTAGE AND POSSIBLY A SUBSTANTIAL AMOUNT OF POWER STORED. ie you touch something, the voltage creates an arc to you since there is a voltage difference, then the filter capacitors discharge through you as well. The filter capacitors can also be charged for some time afterwords, depending on the design of the amp.[/B] [/QUOTE]

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