How do I take circuit board out of mtx thunder 1000xd mono amp? I need to repair blown cap and replace burnt up fet.
Recently bought an alpine type r 15 2ohm dvc and didn't realize it was wired to 1ohm load and amp is only stable to 1000w @ 2ohm. When I initially hooked the amp up I got noise through it and then got a weird smell and noticed small amount of fluid and thought it was a bug that got fried and amp continued with no problem until it pushed the speaker so hard it popped the voice coil leads off their solder point then I repaired the speaker then got a loud buzz from amp and eventually smoke which was a fet that burnt up. I cannot figure out how to remove the board so I can repair. Any help is much appreciated thanks
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The short answer is probably yes... easily, probably no. If you are lucky and only have one or two shorted transistors, then you can cut the leads on those and see if it powers up without blowing a fuse. Also check for shorted diodes and burnt resistors. If all FETs (or most of) the FETs mounted to the heat sink are shorted then it is probably not worth taking the chance putting the time and money into fixing it, just to have it smoke again. Also they are likely in parallel so it is a little more difficult to determine the bad one as they may not all be bad. Measure with an ohmmeter and find the one with the lowest resistance and remove that first and keep going until you believe you have gotten them all. Normally repairs like this are not for someone with little or no experience on amp repair, but if you feel like taking it on, good luck!
sounds like you may have a bad torroid (the donut looking thing). you may also have a bad ground connection. make sure you have completely bare metal where the ground connection is. you need a very clean connection.
THIS LINK WILL TAKE YOU TO THE SUPPORT PAGE FOR THE 1000XD. IF YOU WERE REFERRING TO THE SERVICE MANUAL OR SCHEMATIC OF THE CIRCUIT BOARD, THEN YOU WILL HAVE TO CONTACT MITEK AT 800-225-5689 AND ASK FOR MR. DABBAS. LET ME KNOW IF YOU REQUIRE FURTHER ASSISTANCE......V
Disconnect all speaker connections and rca cables. Leave power, ground and remote wires intact. Try turning on again. If you still have a protection light your amp is faulty. Hopefully you have warranty. Good L
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theres a few possible issues pull and replace all of the fuses also use atleast 4 ga power and ground wires if ur ga is 6 or up get a new amp kit i know my protect mode goes on when the ground isnt connected if none of that works take it to the company you got it from and have them check out the internals
hafler use international rectifier hexfets. there is alot of confusion what constitutes a mosfet amplifier.
if the outputs are mosfets instead of bipolar transistors, it is a mosfet amp.
some designs are using mosfets to drive the switch mode power supply,but use bipolar output transistors.that is not a true mosfet amp.
you need to go to an electronic supplier for the repair industry.
or the manufacturers warranty depot,who will be able to order them.mosfets are very high current devices,you have to ask ...why did they fail. if they are the switch mode drivers,there is bad capacitors in that circuit
I've got a pair of these MTX's subs powered from a Fusion 450 watt 2-channel amp. For the price, they are great. By the way, they are 4-ohm.
My first suspicion would be that something in the first incorrect wiring damaged either the amp or the subs. Can you explain specifically what the "installing the subs incorrectly" means? Was the amp output shorted out at any time or was it operated without a load? Either of these conditions will fry an amp and sometimes, the protection circuitry doesn't work either.
First make sure that your amp is still working. Check both the primary power fuse, usually located near the vehicle battery, and the fuses on both sides of the amp. Make sure that when you turn the system on, the power light comes on steady (blinking is protection mode). Test your subs one at a time on a speaker output.