Beseler 8177 repair

[gleaf]

Does anyone have a schematic for the 8177 Audible Repeating Enlarging timer.

Symptom/s When switched to time safelight output winks safe light.
The enlarger output does not power up when start is depressed.
Have not ohmed out the switches or tested the relay yet.

Don't like reverse engineering a circuit board schematic any more. At my age with
the 'I flipped it over so the left edge is now the right edge...'
mental game is no longer a fun challenge..

[photobymike]

Use a finger nail file and clean the contacts. They are probably corroded and dirty