This unit was build ( in 1975( for replacing the phase effect created with two tape recorders.
![](http://synton.nl/wp-content/uploads/2017/04/903-2-1024x248.jpg)
903
![](http://synton.nl/wp-content/uploads/2017/04/903-inside.jpg)
PCB brd 903
LDR aging
Broken or bad LDR. The synton phaser uses special selected Philips LDR. If these are broken you must find an other LDR. I have used as replacement the VT935G these fits in the blackbox. The Philips version is better (larger range 2k-1M) but not availlable anymore.