What type of diode is the transient suppression diode?
How can I find the diode from PCB?
Its a type of Zener diode and is explained fairly well here:
http://en.wikipedia.org/wiki/Transient_voltage_suppression_diode
I suppose there isn't only one type (product code) of diode.
What should I ask in the electronic shop or is the diode supplyed with the VEMS kit?
And as I understand some VEMS units have it fitted inside?
If you bought the unit with the 30V flyback in it then it has a Transient suppression diode with a 30V breakdown voltage - there is a TS diode with an 18V breakdown voltage.
Rob