Hi from Austria,
running a 50 Watt China laser from Ebay (Shenhui blue-grey) I face the following issue:

1., Does anyone know if it is normal that the LED no. 14 is blinking, what does it say?

2., after only 4 months the tube (50watt/800mm) said "Good bye" without warning from one moment to another
ok, that seems to be normal for that "reasonable model" but, can someone please tell me where I can get a new one,
hopefully one which has a longer life?
Many thanks in advance for your kind help.
Manfred