An expert who has achieved level 3 by getting 1000 points
An expert that got 10 achievements.
An expert that got 5 achievements.
An expert whose answer got voted for 100 times.
Re: no power on my VT-300ATX powersupply
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.....
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
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.
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
I had to fix my boss's digital photo frame today and it looks like it was a power supply issue. All i did to fix it was connect a usb cable AND the powersupply. The frame turned on right away. The power supply may not be able to output enough juice for powering up the frame.
first you switch on the supply by shorting (green and black )wire in output socket of smps.then check output voltages.If there is no voltage then check switching transistors or protection transistos that is placed on first hit sink.check primary bridge and capacitors for open.
it was not necessry to replace so many parts if you go as per proper procedure.please proceed as
1 isolate horizontal output section
from power supply & make power supply ok.
2 if it becomes ok check hor osc,driver&h/output section.
3 if it is ok connect power input to hor.section which was isolated.
4 check for loose contact or print.
5 put on tv .