B&K ST140 Power AMP

tony Ma · 14th March 2011, 04:17 AM

Today suddenly one of channel on my power amp went bad
I believe using it says Japan K135 6L3 and Japan J50 6K1
Is it the same with 2sK135 and 2sJ50?

what is the replacement for it? I tried ebay no luck
Also I did search on this forum many replacement but make me confuse
Can some one suggest me which one is the best?

O yeah the POWER AMP is B&K ST-140 and I am located in US
Maybe I can buy locally here

tks

kstagger · 14th March 2011, 07:20 PM

hard to tell from the blurred schematic I have

looks to be SK135

and SK68 or SK6B - but that could be a fuzzy SK50

mlloyd1 · 14th March 2011, 10:23 PM

yes, same parts:
2SK135 and 2SJ50
the 6XX is date or batch code info.

mlloyd1

Quote:

Originally Posted by tony Ma

Today suddenly one of channel on my power amp went bad
I believe using it says Japan K135 6L3 and Japan J50 6K1
Is it the same with 2sK135 and 2sJ50?

what is the replacement for it? I tried ebay no luck
Also I did search on this forum many replacement but make me confuse
Can some one suggest me which one is the best?

O yeah the POWER AMP is B&K ST-140 and I am located in US
Maybe I can buy locally here

tks

tony Ma · 15th March 2011, 01:30 PM

Finally i got some one in England that has exact things

14th March 2011, 04:17 AM	#1
tony Ma diyAudio Member Join Date: Feb 2011	B&K ST140 Power AMP Today suddenly one of channel on my power amp went bad I believe using it says Japan K135 6L3 and Japan J50 6K1 Is it the same with 2sK135 and 2sJ50? what is the replacement for it? I tried ebay no luck Also I did search on this forum many replacement but make me confuse Can some one suggest me which one is the best? O yeah the POWER AMP is B&K ST-140 and I am located in US Maybe I can buy locally here tks

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14th March 2011, 07:20 PM	#2
kstagger diyAudio Member Join Date: Dec 2003 Location: Grand Rapids	hard to tell from the blurred schematic I have looks to be SK135 and SK68 or SK6B - but that could be a fuzzy SK50

15th March 2011, 01:30 PM	#4
tony Ma diyAudio Member Join Date: Feb 2011	Finally i got some one in England that has exact things

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