Power Supply Section Not Working
Re: Power Supply Section Not Working
Re: Power Supply Section Not Working
lightningserpent wrote:Take a very close look at the resistor that sets the 28v boost (R13 on your board) and check its resistance with a volt meter. I had some issues with my resistor here (i think I used a 10Mohm instead of a 1M) and it shorted out the entire board after pumping out about 58v.
You may need to replace the resistor if it burned out after you powered it up. The ~2v tells me you are shorted out somewhere (possibly inside one of the components if they also burned out).
Re: Power Supply Section Not Working
Re: Power Supply Section Not Working
lightningserpent wrote:Only other idea is to test the connections of each component and check to see if its grounded. Double check your jumper and make sure its not grounded.
Re: Power Supply Section Not Working
Re: Power Supply Section Not Working
lightningserpent wrote:Check the voltage of the 28v boost at D4. My 28v boost was putting out +50v and it was attributed to the boost resistor. I realize you replaced it already, but check and see what voltage level you are getting at the D4/C20 junction and see where you are at.
Re: Power Supply Section Not Working
Re: Power Supply Section Not Working
Re: Power Supply Section Not Working
INSEAD wrote:Please look at my post. A multi-tap transformer will simplify construction and headaches.
Re: Power Supply Section Not Working
Re: Power Supply Section Not Working