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Please replace the power board as card basis. It will be best, rather than trying to repair it. You'd lose both money and effort. Gopakumar Gopalan Google
You have bigger problems than just the IGBT. I replace that part with part number:
APT28GA60BD15
About $6.50 from Digikey.com
You will probably find one or both of the gate speedup diodes blown PN DL4148 surface mounted an one or more of the driver transistors 2SSA1020-Y and 2SC2655-Y blown and usually the IR2153 switching regulator chip. If you haven't blown the 10 ohm ceramic pre-charge resistors you are lucky. Put a 150 watt lamp in series with the power cord to save fuses and parts till it is repaired. If you don't have schematic get back to us.
hi, You have to check the Driver circuit board for the motor. There is motor control IGBT Insulated Gate Bipolar Transistor) in this board .If the IGBT is short then the treadmill will not run or will run at high speed. . You have to check the OHMS between the seocnd and third of lead of the IGBT. If it shows less than 100 Ohms then the IGBT is short and you have to replace the same. Also you have to check the connection to the control pannel. Is there is any loose conatct. Remove the connection in the motor control board which go to the control pannel and reconnect it. Also check the speed sensor. In most of the treadmill you can find the speed sensor near the motor pully. Remove the speed sensor and clean it and the refix it. Remember one thing remove the power of the treadmill and leave it for 30 minutes then only oppen the treadmill. Because there is high voltage storage capacitors in the motor control board which will hold charge for some time even after the power is disconnected. i have added the picture of IGBT for your refference
hi, First of all you have to check the speed sensor near the motor pully. Clean the speed sensor and check the treadmill. I the problem remains then You have to check the Driver circuit board for the motor , if the IGBT( insulated gate bipolar transistor) is faulty then, the motor will not get the voltage required .IGBT controll the voltage to the motor.. Also you have to check the rectifier diode. The IGBT will look like one in the picture. . Remember one thing remove power before oppening working in the treadmill. Because it have live area all over the driver board.The IGBT will look like one in the picture. ok
Oh yeah... know them well The IGBT transistors fail, the sand coated resistors blow open... replace as a pair. The driver transistors get blown... 2SA1020's and 2SC2655-Y's. One or more of the gate speedup diodes for the IGBT's get blown. The switching reg chips, IR2153 is usually gone. and more...
Scroll down to "get manual" and click to download. Ignore other "download links".
You will likely find that one of the power amps has shorted... been there, done that several times. Usually the channel A (rearmost) power amp shorts takeing out the 9140 Mosfets and other parts. Often an internal short between an interior and upper layer of the amp circuit board is the fault that causes all this. Use a light bulb (150 watt) in series with the power input when testing after repair. Use an isolation transformer when working on the supply for personal safety. When supply is running again, discharge the 70 volt source caps before plugging onto the amp to avoid welding arcs at the connectors. I have seen the supply hold charge for several days.
From the positive lead on the battery, follow that wire all the way to the coil. Somewhere inline along that wire should be the fuse. Most dirtbikes only have 1 main fuse, usually of 20amps.
If the supply failed I can tell you which parts to replace... and if it failed there may be a failure in the power amp that caused it. You can contact be directely at fredy2 @ aol.com... put Behringer in the subject.
The supply when it fails takes out eleven components including two expensive IGBT transistors. If the rearmost amp fried, add at least four more components and a lot of work carving out burned board and wiring around the blown circuit traces.
E30 IGBT fault If an excessive current is applied at an IGBT (transistor in the power end stage), the output voltage is switched off to protect the transistor.
Sounds like maybe a fan has gone bad and is drawing too much current. Try disconnecting the fans and reconnecting one at a time. Also check the fans to make sure they turn free and are not blocked.
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