Hi everyone. I have Audiolab 8000A which has blown one channel. The transistors are Sanken 2SA1216 / 2SC2922. I replaced them with the same, but they burned after 3 minutes of operation without overheating and 30% volume! (apparently were fake).
I have the original Toshiba 2SA1302 / 2SC3281 in which base/collector/emitter are the same positions.
The question is: Can I put Toshiba instead Sanken?
Thanks in advance!
I have the original Toshiba 2SA1302 / 2SC3281 in which base/collector/emitter are the same positions.
The question is: Can I put Toshiba instead Sanken?
Thanks in advance!
There's some reason the channel blew. I'd suggest testing with a dim bulb tester and checking all the voltages and biasing next time, or you might blow more transistors due to the original fault.
The 3281/1302 are higher gain I believe - you will need to re-bias anyway after changing transistors of course. I'd wind the bias right down before powering up with new transistors, then adjust carefully.
The 3281/1302 are higher gain I believe - you will need to re-bias anyway after changing transistors of course. I'd wind the bias right down before powering up with new transistors, then adjust carefully.
Together with the original transistors blow and other components (transistors and resistors)
I replaced all damaged items and connected the 60W bulb successively, adjusted BIAS to 40mA. Everything went well.
After that i increased volume and transistors burned again, apparently were fake.
I replaced all damaged items and connected the 60W bulb successively, adjusted BIAS to 40mA. Everything went well.
After that i increased volume and transistors burned again, apparently were fake.