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I have a Tecnica 114 Telwin velder but the IGBT is now burned together with the resistors and diodes that trigger the gate.My problem is that I cannot read their value because they are burned.I beg you to help me if it is posible because I could not find any information or service manual.Yours Murar Ioan(Romania)

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Posted on Jan 02, 2017

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those are 6.8 ohm 1watt metal film resistors 5% tolerance

Posted on Jul 22, 2008


SOURCE: Jvc stereo receiver CA-HXD7

RP206 = 100 ohm 5% 1watt ( also check PQ105 : 2SA1273 PNP transistor )

Posted on Oct 31, 2008

  • 124 Answers

SOURCE: jvc subwoofer will not power up

this is not a response to your inquirey but i'll say this if the parts you are looking at are so bad then remove them individually and take them to a electronics center and have them tested.from what i know about this stuff the board may be shot. usually cheaper to replace the board than parts. test the speaker on home amp, or car amp, as deemed appropriate to see if it is good then it becomes a problem of input. good luck

Posted on Nov 01, 2008

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I have the same problem, but it is open.  The color code Brown - Green - Brown - Gold.  If it is a resistor, the value must be 150 ohms +/- 5%.  To confirm the value, I open the working trimmer and remove one leg from the circuit and measure resistance.  The meter reads only 4 ohms.  Therefore, I think it is an inductor (150uH +/-5%), not resistor.

Posted on May 14, 2009

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SOURCE: Power supply AD-12014(I) two smd burned

223 both

Posted on Mar 02, 2010

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Was the rectifier replaced with the same exact device? Or something with comparable ratings and performance? It likely was protecting another active device like an SCR, IGBT, or other type of thyrister which may have failed. If substitutiing a higher rated device for the original, the gate characteristics must match.

Also check some of the heavier resistors as they sometimes do double duty as a fuse in the circuit.

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About $6.50 from

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.

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When thosse resistors (precharrging of main input filters) burn up there is major damage. The IGBT's are usually gone... replace with APT28GA60BD15... the switching regulator IR2153 is gone... one or more of the 2SA1020-Y and the 2SC2655-Y gate drivers are gone. One or both of the DL4148 speedup diodes for the IGBT gate drives will be gone. The Wirewound ceramic resistors either 10 or 22 ohm 10 watt radials... Use:
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I have a image 17.5 s when i press start the treadmill belt will start and then turn off. i already check the motor with a 18v battery and it work find. could this be the motor control?

First of all you hve 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. From your naration the motor is ok . Why the circut breaker trips because, if the IGBT( insulated gate bipolar transistor) is short then, when you press the start button the motor will try to drain a high current from the power line.IGBT controll the voltage to the motor.When it get shorted the applied voltage will go to the motor without regulation. Also you have to check the rectifier diode. The IGBT will look like one in the picture. Check the ohms between the seond and third pins of the IGBT. It should be above 1 kohm. Remember one thing remove power before oppening working in the treadmill. Because it have live area all over the driver board.


Aug 04, 2011 | Icon Image 17.5 S Treadmill

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I have a Cadence DX15t hat just stoped as it was being used. No burning smell, motor turns by hand, key in place but won't start anymore.

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.


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1 Answer

There are two resistors 310-3 10R on the power supply of the Europower pmp 5000, i need to know if it is 330k or 330om.

The schematic for the power supply does NOT show resistors in the 310-3... Where are these in the circuit... IF THESE happen to be the gate drive resistors for the IGBT's they are 33 ohms. If you have hasd a failure in this area there are other parts that typically get destroyed, including one or both the speedup diodes at the same gates; Here is the complete PMP5000 schematic:

Scroll down to "get manual" and cliick to download. IGNORE other download links. If you need help restoring the PSU get back to me.

Jul 20, 2011 | Behringer Europower Pmp5000 Powered Mixer...

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Hi, I need the pmp5000 schematic or service manual. Because my mixer smps is faulty.. (On the smps pcb following parts are problem : T12 - D24 and 25? R11 open - D6 and D9 are short - TOP221 ? ) Best...

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...

Here is your service manual:

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.

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Discontinued power IGBT

This is a fairly ordinary 200 Amp, 600 Volt IGBT. It might cost this much because they just aren't made anymore.

Unless you wanted this part for a specific reason that you didn't mention then I think you'd be better off buying some more modern 'bricks' with better performance.

I got five 600amp 1200volt IGBT's for $100 off ebay a few months ago.

An avenue of research that might be of interest to you would be SSTC or solid state telsa coils. Google searches will find you many SSTC sites with IGBT H bridge circuits and drivers basically doing the same thing as you are intending.

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