I have just set up a used Beseler 23CII which has the Dual Dichro S colorhead. The problem is that the light does not always pop on as soon as it is switched on sometimes causing a delay of over 1 second. I have tested this both with the enlarger plugged directly into a wall socket and run through two different timers. Again, when the timer is started it may activate the light immediately or be delayed.
The previous owner claims he didn't have this problem and I tend to believe him. I had the enlarger in storage for 2 years before finally setting it up. Any suggestions as to where I can begin troubleshooting?