Strange one this-All the digital chips (4011's, counters, RAM,etc,) have the correct power going to them, yet the 7555 counter/comparator strange sh*t, dont know what it does chip, only has 3v. Should work between 5-12v. replace all electrolytics-NADA
Anyone have the schematic please
I have plenty of swaps for vintage gear

Cheers all

Hi All
My 80's analog dream of a drum machine-finally packed up
strange PSU problem-I wondered if anyone had the schematic please
Have plenty to swap

many thanks