Dear Sir ,
we are working on lnk 419 ic .
we have get output of 48 V 700mA.
when start the led driver , driver is working proprely .
but after severl hours of operation secondery side diode is become short . and driver is stop working . i am using MUR460.
and we are getting sound of like " beep beep"
this problem we find in only in severl drivers.
can you please tell what can be the problem ?
as per my thiking it can be the transformer problem?
please guide on this problem .
thanking in advance .