Author Topic: Problem power supply  (Read 1180 times)

0 Members and 1 Guest are viewing this topic.

Offline BrianBro

  • Newbie
  • Posts: 3
  • Country: us
Problem power supply
« on: June 11, 2016, 12:56:14 pm »
Hi, I have a Pyramid 12 volt power supply that when I put a load on it the power drops to around 5 volts. Does anyone know what component or components might be bad?
 

Offline rolycat

  • Super Contributor
  • ***
  • Posts: 1090
  • Country: gb
Re: Problem power supply
« Reply #1 on: June 11, 2016, 01:20:10 pm »
Insufficient data.
  • What model of power supply?
  • What sort of load?
  • Have you tried other loads?
  • How much current is drawn when the load is applied?
  • Have you opened the supply to see if there are any obvious faults?
Incidentally, power is not measured in volts.
 

Offline BrianBro

  • Newbie
  • Posts: 3
  • Country: us
Re: Problem power supply
« Reply #2 on: June 11, 2016, 01:48:01 pm »
The model is Pyramid PS-26KX and it doesn't take much current for it to drop. About an amp. Everything inside looks good. Nothing burnt
 

Offline rolycat

  • Super Contributor
  • ***
  • Posts: 1090
  • Country: gb
Re: Problem power supply
« Reply #3 on: June 11, 2016, 04:45:31 pm »
A good start would be to check the electrolytic capacitors, as these are a frequent source of PSU problems. Look for bulging tops and/or leaking electrolyte. If you have a multimeter you could also check the output ripple using the AC volts setting.

Also check for unusually hot ICs, resistors etc.
« Last Edit: June 11, 2016, 04:48:24 pm by rolycat »
 

Offline BrianBro

  • Newbie
  • Posts: 3
  • Country: us
Re: Problem power supply
« Reply #4 on: June 11, 2016, 10:15:38 pm »
Ok thanks, I'll see if I can find anything
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf