Question about Vtech VT-300ATX 300-Watt ATX Power Supply (vt300atx) 165-Watt Power Supply

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No power on my VT-300ATX powersupply

Power supply has no power output. I inputed 120AC but power supply is not turn on at all.

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If you're trying to just plug in the wall power cablem without connecting the motherboard it will not work. Switching power supplies need to detect a load (device) otherwise they will not put out power. Safety feature.....

Posted on Apr 05, 2007

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The power is on..but if i switch on..can;t start,,

Posted on Apr 27, 2009


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Posted on Jan 02, 2017

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There may be many different power supplies that will work for your speaker system, but they must comply with the following:
1. The output voltage of the power supply should be correct as what the speaker system requires. (seems like 12 V in your case)
2. The specified maximum current output of the power supply should always be a higher value than the Amperage spec of the speaker system.
3. The output wires or pins of the plug on the power supply should correspond to the (+) and (-) on the power input of the speaker system.

A multimeter will come in handy to determine a power supply's output voltage and polarity.

Jan 25, 2016 | Sony Computers & Internet

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Interior lights

This is both a courtesy and safety issue on many high end vehicles. The light from the interior lights can cast enough light to get to front door and possibly show dangers in your path. And after first getting into you car and starting it, you can check the back seat for any unwanted hitchhikers. As for the 10 minute timer, I don't know if this can be adjusted. A Chiltons/Haynes repair manual for you car may have that answer, or, the Buick dealership shop foreman. Best of luck.

May 31, 2015 | 1998 Buick Park Avenue

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D-link router (with 1 antenna and no modem) that has no power and no LEDs lit. the outlet still works to charge a cellphone. how do we fix the router?

Possibly the powersupply for the router is dead. Find another powersupply with same voltage output to try OR test the output tip with a meter. If the power supply does work then your router is dead. Replace it. If there is no power (5 volts or 12 volts etc) coming from the tip of the power supply adaptor then replace the adaptor / power supply.

Apr 28, 2013 | Computers & Internet

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I have a KDL52s5100 it is not working(no lights, dose not t turn on) due to a thunderstorm. I have bought 2 powersupply board and a new main board and still nothing turns on no even a light.. please help....

make sure that all the voltages in the power supply output are present before connecting to the control motherboard. also confirm that the cables supplying the voltages to the motherboard are all matching e.g do not make a mistake to connect the 3.3v cable to the 12v terninal. just be cautios and your system will power up

Sep 21, 2011 | Sony BRAVIA KDL-V40XBR1 40 in. LCD HDTV

1 Answer

I was watching tv and the tv turn off itself than no ligues no power and i try to turn on again and nothing happen what i should do?

Good day!

The problem of your TV is the power supply board.

Please follow this procedure to fix that problem:

  1. Remove the back cover of your TV.
  2. After that,look for the power supply board.
  3. Next,check the input voltage of the power supply using multimeter tester (range in AC).If the power supply don't have input voltage,replace the power cord.
  4. If the power supply board have input voltage,next is check the output voltage of power supply it should have 5vdc for the system board,12vdc for the sounds and 24vdc for the back light inverter.
  5. If you don't have output voltage of the power supply.Please check the fuse if busted and the power transistor if it is shorted,replace it with the same type,ratings and value.Also look for any leak/bulged on the top capacitor.
  6. After you done this steps and you found and replace the defective parts.Plug-in your TV and power it ON to test if it is OK.
The power supply looks like this:

If this solution will be help you to fix your problem,please don't forget to vote and rate my answer.Thank you for using FixYa and good luck.

May 08, 2011 | Vizio L37 Television

1 Answer

No power even if I plug my DVD to power source

Good day.

Follow this procedure for trouble shooting.

  1. Remove the cover of your DVD player.Loosening all screw.
  2. Check the input voltage of the power supply 220v/120v AC.If don't have input supply that comes from the ac cord,replace it.
  3. If you have a input voltage supply comes from the power cord.Check the output voltage of the power supply such as 5vdc and 12vdc.
  4. If the you don't have output voltage from the power supply.Check the fuse if busted,check open/change value of capacitor,check power transistor (regulator)if shorted and leak/bulging top capacitor of the power supply board.If you found any defective parts replace it.
  5. If you have output voltage comes from the power supply.The problem could be the main board,replace it.
  6. If you already done this procedure,test it by power ON the DVD player.

I hope this information will be helpful.Thank you and good luck.

Apr 17, 2011 | LG Televison & Video

1 Answer

How can I tell if my VT-300ATX power supply is bad?


Short black and green wire the smps fan will start ,For details click bellow the link,

Let me know if you need more information

Feb 07, 2011 | Vtech VT-300ATX 300-Watt ATX Power Supply...

2 Answers

I recently got this laptop from someone who did not have the power supply with it. Can anyone tell me what the required power supply must output? I really don't want to fry this computer, so I want to make...

You need a charger with this features: 90W Laptop AC Adapter / Charger for HP Pavilion DV5-1125NR / DV5-1127CL Replacement
Diameter : 5.0 mm x 7.4 mm
Input Volt Type : AC
Input Volt: 110-220V (Worldwide Use)
Output Ampere : 4.74A
Output Power : 90 Watt
Output Volt : 19V
You can buy one at:
for $19.89 including shipping.
If this was helpful, please rate me.
Thank you

Jan 13, 2011 | HP Pavilion dv5-1125nr Notebook

1 Answer

I forgot to remove input power supply of etower. Whilst emachines etower power supply was still on, i accidently moved the voltage selection switch to a higher voltage. There was big bang and fire happend...

Hi, First, check your power supply fuse for damage and switch the power to standard. Disconnect power supply output port and check your output voltage. If nothing abnormal, turn off power supply, connect the output and turn it on to check the power on your PC

Dec 14, 2010 | E-Machines etower 566i PC Desktop

1 Answer

I have an old SPX90 Digial Reverb with a dead powersupply. The part number on the board is VA81400. Is this part number correct? Is the part still available? We tried ordering it from the Yahama dealer,...

Any power supply will do as long as it has the same specs as the dead one, which will be:

Input : x Volts AC
Output: x Volts AC or DC
Watts: x
Amps: in millamps
Polarity: (for power supply with DC output only) Center pin = plus or Center pin = minus

You should be able to find the matching transformer/adapter/power supply at Radio Shack.

More info, let me know.


P.S. The power supply you received may be the correct one -- check to see if the specs match the old one.

Aug 29, 2009 | Audio Players & Recorders

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