My old Electrocompaniet AW250DMB blew up
They warned me at EC the last time; they didn`t have any more of those old transistors left so the next time they blew up I`ll have to replace them all. (24)
Well, now it just happened, I saw the smoke from the left board on the right side amp. Picked it out to identify the transistors and see if I could find those old Toshibas somewhere, and it looks like I did. Activeparts claims to have them both.
But even if they have Toshiba written on them they don`t look like the ones in my amp, these are black while the existing(?) are green.
Anyone who know a bit about this? Any reason why I should not use these replacements?
They warned me at EC the last time; they didn`t have any more of those old transistors left so the next time they blew up I`ll have to replace them all. (24)
Well, now it just happened, I saw the smoke from the left board on the right side amp. Picked it out to identify the transistors and see if I could find those old Toshibas somewhere, and it looks like I did. Activeparts claims to have them both.
But even if they have Toshiba written on them they don`t look like the ones in my amp, these are black while the existing(?) are green.
Anyone who know a bit about this? Any reason why I should not use these replacements?
They are most probably fakes or cheap chinese remakes, you would be much better off replacing with other more modern transistors even from different manufacturers.
First find the reason why they are blowing in the first place. If its because of power handling get transistors that can withstand higher currents.
First find the reason why they are blowing in the first place. If its because of power handling get transistors that can withstand higher currents.
The 2SA1216 is spec`ed at a height of 6mm, the 2SA1095 at 5,3 which equals a height DIFFERENCE of max 1mm. Should not pose any problem.
When EC went from 2SA1095 to 2SA1302, they did not alter any compensation. You can can safely assume that no problems will arise from the transitorial diversion of 2SA1216 as compared to 2SA1095.
Regards
Roar
When EC went from 2SA1095 to 2SA1302, they did not alter any compensation. You can can safely assume that no problems will arise from the transitorial diversion of 2SA1216 as compared to 2SA1095.
Regards
Roar
Maybe it would be a good point to clarify what is meant by taller. The Sanken package is 6,1mm thick, the Toshiba is 5,3mm max. What this implicates is that the Sanken should fit snugly UNDER the circuit board, but the pins will have to be bent slightly backwards. Not a big issue.
Regards
Roar
Regards
Roar
My old Electrocompaniet AW250DMB blew up
Are you fix the problem? Stand before the same work om my AW250. What type of transistors your are use finally? Any comments.
My old Electrocompaniet AW250DMB blew up
Are you fix the problem? Stand before the same work om my AW250. What type of transistors your are use finally? Any comments.
I went for 2SA1216 and 2SC2922 but I still haven`t heard the result, just know they works
Are you have information for BIAS and DC offset for AW250? As I understand after such replacement amp. needs in adjustment.
Hopefully that they are orginal brands....
My collection (new & second hand) are purchased about 1990
and are no fake at all!
Cheers
Hp
My collection (new & second hand) are purchased about 1990
and are no fake at all!Cheers
Hp
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