As I said, first when there was no output from the amp, I thought it will be these IRF3415, so thats why I bought them all brand new and changed them. Then I tested if the amp is working after the fix, and he was - though just 3-4 seconds after which I heard a little snapping sound comming from it, and no output again - I felt a burned smell right after that - Thats when I thought I blown the small 3 transistors because when doing this test they werent mounted to the heatsink. At this time no visible damage was to be seen on them, or ANYWHERE else... I then did the second stupid mistake of trying to meassure the voltage passing through these 3 with the meter, and the amp turned on, where I slipped the meter negative on two legs of the B631K - between Drain and source - thats when he literally popped from insinde and is dead for sure ... Thats the basic reason I changed the B631K and the rest two... Whereas I'm not sure if the original D600K I changed are dead - I dont know where from this snapping sound came from because there is no visible damage anywhere... So if it wasn't from the two D600K, I still have the original ones...
Hi,
I would like to know the values of ZD 9301, ZD 9302 and ZD 4901.
On ohmeter indicates 0.
(not all of the, but 9301 and 4901).I change D600K with SD669A. It's ok?
Thanks!
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