Question about Vector VEC 024 400-Watt Power Inverter (VEC 024) 400-Watt Power Supply

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A ups mosfet ckt one mosfet burnt out og 16 can i replace only one

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Fred Yearian

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Usually the mating one has been degraded or damaged as well. Replace as a pair, or all of them that are in the same function.

OFTEN driver transistors and drive diodes are also damaged. Carefully check all associated components to avoid burning out freshly replaced ones.

Posted on Mar 14, 2010

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LG 60PV250-UB will turn on click than turn off click, no flashing lights. Some times I can leave it off for days and turn it on for 5 minutes work than turn off & do the turn on click turn off click


If there are no suspect capacitors (any capacitor that has any dots or stains on it or is even slightly bulged up should be replaced). If no suspect capacitors are found, check the power board for mosfet problems. It is difficult to check mosfets (attached to the radiators) while on board. I suggest to check all closest resistors and diodes around each. If you find one of them at fault you are in luck. That means that you pinpointed the faulty mosfet. Replace it as well as any burnt components around it. If this does not help then start checking other board by unplugging them one by one and checking if the clicking is still there or not. I hope this helps.

Oct 22, 2016 | LG Televison & Video

1 Answer

LG 37LG300-ZA,LCD,stand by no picture &sound,power led twinkling but it dosnt work.


Replace the main power regulator board. It cannot be repaired.

Dec 09, 2012 | Televison & Video

1 Answer

Hooking up the amp i had the ground wire connected and was going to hook up the power wire and it hit the case of the amp know the amp turns on but there is no sound from the speakers other amps work on...


sadly, your amps' output MOSFETS are more than likely toast.

your amp was grounded, and you touched the amp chassis with the power line.
electricity will follow any path available to find ground. in your case, the output mosfets became your main ground-path since they are directly connected to the amps chassis (heat sink) and internally you had grounded the amp so power would flow full force through the output transistors in the serach for a ground.

open up your amp and smell the row of MOSFET transistors. you'll probably even be able to see some burnt transistor legs.

repair or replace.

May 08, 2011 | Kenwood KAC-7202 Car Audio Amplifier

1 Answer

Motor Controller Board Schematic


If you are the original owner the parts in residential settings is lifetime so call body-solid @ 1-800-556-3113 ext 520

Feb 04, 2010 | Endurance T10HRC Light Treadmill

1 Answer

Burtn out resistors on a quantum audio q 700.1


The resistors are probably burnt because of the audio mosfet transistors going out. you will have to test them with a meter. don't just replace the resistors, they will burn up again and maybe cause more damdage

Jan 29, 2010 | Car Audio & Video

1 Answer

Resistors burnt on power supply board on L1975NW lcd monitor looking for that power supply board


This monitor has common problem with caps went bad and it will take out the fure and MOSFET in the inverter circuit. Do you know which resistor is burnt out? I usually only have to replace the caps, MOSFET, and the fuse.
http://www.instructables.com/id/How-to-repair-a-Westinghouse-L1975NW-19quot-LCD-/

Jan 07, 2010 | Computers & Internet

1 Answer

Red convergence will not line up on my jvc 56 inch i art projection tv model # AV-56WP74. PLEASE TELL ME WHERE CAN I BUY THE KIT SO I CAN FIX IT MYSELF!!!


You need to pull the front grill cover/panel off the front of the tv. Remove screws (4) from back that hold it on, also 2 small ones behind front video input door. Then remove access panel. The ckt board closest to you is the convergence amplifier board. You should replace both amplifiers (stk392-110 or 120) and any burnt/open resistors you find near the amps.(use the same value resistors as the corresponding resistors in the blue amp ckt)

Jul 08, 2009 | JVC AV-56WP30 56" Rear Projection...

1 Answer

Trying to find the right FET to replace burnt up ones with


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

May 23, 2009 | MTX Thunder 5-Channel Amplifier 895 Car...

1 Answer

Mosfet in my asus motherboard burnt out,


Better to have the motherboard replace, do not wait until some other components might be also damage. Commonly mosfet is use in power supplies regulator. It can kill your processor and memory.

And also check your power supply. It might also having problems.

May 02, 2009 | ASUS P4GE-MX Motherboard

4 Answers

MA2 laptop, not charging battery, changed burnt 4407 chip, no LED now.


This unit had a RED CHARGE error. Replaced PQ38 solved the problem.

If you get an error on the charge circuit after replacing the PQ38 you should also replace PQ38 because it too may be blown. Make sure Pin 1 where the dots. Also check the MOSFET on the other side of the COIL too.


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Oct 08, 2008 | Gateway MX6030 Notebook

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