Wrong Voltage Noise Section

Discuss Yocto construction and related issues
  • Power supply you are using is Ac or Dc?
  • SOM wrote:I know this has been discussed very often..

    I only get 50mv at PIN1 U24
    all resistors are correct in the noise section.. double checked it :)
    I tried everything.. R127 with 47K .. with 4,7K .. adjustable resistor..even if i go under 1k... nothing ;(
    where is my fault?
    the only what i did diffrently is that i used at C31 a 1/100 instead of 1/50 .. could that be the problem?
    maybe a faulty sc828r ? this is what i read here... possible to meassure something at the Q35?
    would be thankful for every advice :)

    best
    sascha
    The chip might be faulty.

    Are you getting correct voltages everywhere but on that specific chip?
  • I use the same Powersupply for the NAVA.
    I dont understand why some people get the voltage without this mod?!
    R129 Jumper
    R131 100k
    R127 10uf capcitor
    R130 parrallel a 22pf capacitor

    at least it works this way! :D

    Image

    I read this mod but i thought its possibel without?!

    Many thanks anyway guys!!!

    Best!