Hey all!
I was wondering if someone can help with some advice replacing the STK8040 ICs in the Technics SU-V2 amp. I have found a few sources that say the STK8050 is a drop in replacement. Is this correct?
I'm working on this amp so I can gift it to my Dad for his birthday. He used to have an identical amp 20 years ago and I think he misses it, so I got another one that promptly burnt out R616. I've checked everything downstream from this and the transistors and caps both checked out, but I had some 3.3uF caps on hand so they were replaced and they should be good.
From the testing I've done I suspect the associated STK8040 has died, though hopefully I will confirm this tomorrow for sure.
Voltages seem within spec approximately 41v +/-.
I'm usually more at home repairing vintage computers so, amps are slightly new territory for me, though I've repaired the odd one before. This SUV2 is a bit more sophisticated than I have dealt with previously.
If i can obtain an STK8050 can I just swap that in and be good to go? I cant seem to find any datasheets for these ICs. Alternatively I might build a couple of replacement boards ive found on these forums!
Any help appreciated!
I was wondering if someone can help with some advice replacing the STK8040 ICs in the Technics SU-V2 amp. I have found a few sources that say the STK8050 is a drop in replacement. Is this correct?
I'm working on this amp so I can gift it to my Dad for his birthday. He used to have an identical amp 20 years ago and I think he misses it, so I got another one that promptly burnt out R616. I've checked everything downstream from this and the transistors and caps both checked out, but I had some 3.3uF caps on hand so they were replaced and they should be good.
From the testing I've done I suspect the associated STK8040 has died, though hopefully I will confirm this tomorrow for sure.
Voltages seem within spec approximately 41v +/-.
I'm usually more at home repairing vintage computers so, amps are slightly new territory for me, though I've repaired the odd one before. This SUV2 is a bit more sophisticated than I have dealt with previously.
If i can obtain an STK8050 can I just swap that in and be good to go? I cant seem to find any datasheets for these ICs. Alternatively I might build a couple of replacement boards ive found on these forums!
Any help appreciated!
Buy a Mosfet kit, like this one:
https://www.salconelectronics.com/product/4-mosfet-power-stereo/
This is just representative, there are many sellers for similar items, see voltage is suitable.
More reliable than fake STK, easier than DIY.
https://www.salconelectronics.com/product/4-mosfet-power-stereo/
This is just representative, there are many sellers for similar items, see voltage is suitable.
More reliable than fake STK, easier than DIY.
Yes of course you may substitute an 8050 for 8040 quite easily. But considering the fakes masquerading in the market, some brave ppl decode the internal diagram and construct it themselves with fairly good results. You can locate this quote easily if you talk the net for that.
Attachments
You can locate this diagram quite easily if you trawl the net for this. ( Error due to glide typing)
