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My asus zen aio pro all in one shut off snd nos tgere is no power or stand by light ,cgecked voltage out of power supply is good is there a fuse inside the computer that may have blown?

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  • Mike Wood
    Mike Wood May 24, 2019

    Mine too... exactly the same. Have checked the drive - fully functional. Have changed the power cord unit - no effect. Will not power up or show stand-by light. 29 months old, so 5 months out of warranty!



6 Suggested Answers


6ya staff

  • 2 Answers


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Posted on Jan 02, 2017



  • 1 Answer

SOURCE: Insignia model IS-TVHD30

Wierd....I have the same tv and last week the same problem occurred.  I'm googling to see if i can find out how to fix this prob lem

Posted on Oct 25, 2007


Steve Allison

  • 5569 Answers

SOURCE: ESA Plasma PDP4294LV No video,sound

 checked voltages meter set to AC referenced to chassis VA, VE, etc no voltages. 
Do not try to measure voltages on the primary side of the power supply with a meter; you may damage the meter and cause new damage to the supply. There are switching frequencies somewhere between 50,000 - 100,000 Hz and possible voltage peaks of several hundred volts. 

Checking AC is only useful before a diode bridge that converts incoming AC into raw DC that is then chopped at higher frequency into an approximate HF AC, coupled to the secondary, then tapped and connected to more diodes to produce DC, finally regulated and sent on its way.
Your plasma set uses some higher voltages that could have caused the cracking sound they heard but the DVD player didn't cause the problem directly; maybe just caused the HV for the display to surge for a moment.
You may have additional fuses on the secondary side of the supply. If test points are accessible there, check for DC voltages and be suspicious of any fuse or test point that measures nothing at all.
I can't tell you which voltages to expect since that varies from one design to another but you should find several lower voltages such as 5 VDC for logic circuits and perhaps a 12 V point. The plasma's HV could be produced from a separate board fed from the AC line or get its supply voltage from the main supply. There aren't many standards to rely on here.      

The most likely semiconductor failure would be on the secondary side and diodes come in many different packages, many cylindrical, some in the TO-220 package with a metal flange and mounted on upright aluminum heatsinks. These will have only two leads and there will be some in the same package with three legs. The latter can also be checked statically but unless you know what kind of transistor or regulator (look about the same) you are measuring, you will not be able to ferret out a defective one with any luck. 
While you have the set open, check for any dust bunnies that can act as sponges, collect moisture and create a discharge path for higher voltages. 

Posted on Dec 27, 2008


  • 59 Answers

SOURCE: reverse lights dont work

Check reverse light switch

Posted on May 07, 2009


David Melbourne

  • 22 Answers

SOURCE: MLT386X power supply

We have a page with pictures and descriptions on this supply.

Hope it helps!

Posted on Sep 17, 2009


  • 46 Answers

SOURCE: Computer will not turn on. Possible power surge.

If the power supply is good then your motherboard must have gone bad during a surge.

Posted on Dec 27, 2009

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1 Answer

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good day check if their is a stand by 5v voltage at the power supply and a light indicator on the front panel. now if no stand by voltage and indicator light the problem is with in only at power supply. check for shorted mosfet transistor and bad regulators. now if their is an stand by voltage but doesn't turn on check the inverter board and back light for shorted parts because the main board will not turn on. check also for bad processor. hope this will solved the problem thanks for consulting the fixya.

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There is a fuse on the power supply close to where the A/C is connected to the board. If the fuse is blown, look at the board and see if there are any burned components and or swollen capacitors. If there are bad components, I would suggest getting a new board.
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