Luxman R115/R117 Transitor swap question

retrex · 27th December 2012, 11:48 AM

I have a Luxman R115 that I am working on where I have a bad 2SC2705 transitor in the R amp board. There are other issues in the pre section which need to be addressed at a later time but I want to get the amp section working to determine cost effectiveness of doing so. I have spare 2SC3467 transistors from an R117 repair. The amp board circuits between the R117 and R115 are almost identical, including the parts themselves, and the only difference I see is the R117 transistor is built to handle the higher rail voltage. I am not all that familiar with swapping transitors so I was hoping someone with more knowledge in this matter would give an opinion as to whether it would be ok to do this swap. Thanks ahead for any responses.

homemodder · 27th December 2012, 04:05 PM

2sc3467 is a perfect replacement, and in some ways better, go ahead.

retrex · 28th December 2012, 10:38 AM

Quote:

Originally Posted by homemodder

2sc3467 is a perfect replacement, and in some ways better, go ahead.

Thanks I'll give it a go. I kinda thought it might be but I wanted someone with more knowledge to verify. If it works I will have at least both R and L channels of the amp section up and running giving me the CD input as a functioning source.

retrex · 29th December 2012, 11:21 AM

That did the trick. The preamp problem looks like IC issue with TC9163N switching device. Luckily I have a spare of this part as well. Thanks again.

27th December 2012, 11:48 AM	#1
retrex diyAudio Member Join Date: Jan 2011	Luxman R115/R117 Transitor swap question I have a Luxman R115 that I am working on where I have a bad 2SC2705 transitor in the R amp board. There are other issues in the pre section which need to be addressed at a later time but I want to get the amp section working to determine cost effectiveness of doing so. I have spare 2SC3467 transistors from an R117 repair. The amp board circuits between the R117 and R115 are almost identical, including the parts themselves, and the only difference I see is the R117 transistor is built to handle the higher rail voltage. I am not all that familiar with swapping transitors so I was hoping someone with more knowledge in this matter would give an opinion as to whether it would be ok to do this swap. Thanks ahead for any responses.

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27th December 2012, 04:05 PM	#2
homemodder Account disabled at member's request Join Date: May 2006	2sc3467 is a perfect replacement, and in some ways better, go ahead.

29th December 2012, 11:21 AM	#4
retrex diyAudio Member Join Date: Jan 2011	That did the trick. The preamp problem looks like IC issue with TC9163N switching device. Luckily I have a spare of this part as well. Thanks again.