Originally Posted by
mv4wd
Be patient, you'll do it. What transistor codes are you using? Check the pinout. Are the voltages correct in the decoder without the loop amplifier connected? Does the loop offset voltage change by turning the trimmer?
Thanks, seems you are spot on. I did not think to check the transistor pinout. Decoder voltages are correct.
Will have swap all of the transistors around it seems.
Any damage done by this???