Yamaha C-4 input selector

dmitririzzo · 11th October 2007, 11:25 PM

The input selector on my Yamaha NS Series C-4 preamp has gone bad. The sound breaks up or fails altogether. Rotating through the inputs sometimes fixes the problem, but it always comes back.

I have no idea how to find the replacement part number, or a source for the part, since I don't think Yamaha makes them any more. Can anyone help me?

If I can't get the Yamaha part, does anyone know another rotary selector that would do the job just as well? Looks are not a consideration.

Thanks!

carlmart · 12th October 2007, 02:57 AM

It may all depend on how many positions and decks the Yamaha uses.

I like the Grayhill selectors, and I use them. Contacts should be at least solid silver.

Bigred · 12th October 2007, 06:34 AM

Are you sure its actually worn/gone bad or maybe just in need of a blast of deoxit?

dmitririzzo · 12th October 2007, 07:50 PM

It's been cleaned twice. It has 5 positions.

Thanks!

KBK · 13th October 2007, 09:58 PM

I've owned two of them. Once I pulled the switch out and re-clamped the solder points.

They are the usual kind of alps brand custom parts, they cannot be easily replaced by anything.

If any of you have ever taken apart a alps black beauty pot or the like, the failure point can sometimes be that the solder pins are 'clamped' to the plastic film substrate, which is alot like a little circuit board. the connection point is merely a press tight lug contact. So they sometimes need to be re-pressed. the switch needs to be pulled for this effort. There are no guarantees on this fix. As well, the contacts on the switch proper are done the same way and can be similarly fixed.

dmitririzzo · 19th October 2007, 07:34 PM

I was afraid of that. Any idea how I can find the part number and maybe track down a replacement?

Thanks.

11th October 2007, 11:25 PM	#1
dmitririzzo diyAudio Member Join Date: Nov 2005 Location: Chicago	Yamaha C-4 input selector The input selector on my Yamaha NS Series C-4 preamp has gone bad. The sound breaks up or fails altogether. Rotating through the inputs sometimes fixes the problem, but it always comes back. I have no idea how to find the replacement part number, or a source for the part, since I don't think Yamaha makes them any more. Can anyone help me? If I can't get the Yamaha part, does anyone know another rotary selector that would do the job just as well? Looks are not a consideration. Thanks!

13th October 2007, 09:58 PM	#5
KBK diyAudio Member Join Date: Dec 2003 Location: The Wilds Of Canada	I've owned two of them. Once I pulled the switch out and re-clamped the solder points. They are the usual kind of alps brand custom parts, they cannot be easily replaced by anything. If any of you have ever taken apart a alps black beauty pot or the like, the failure point can sometimes be that the solder pins are 'clamped' to the plastic film substrate, which is alot like a little circuit board. the connection point is merely a press tight lug contact. So they sometimes need to be re-pressed. the switch needs to be pulled for this effort. There are no guarantees on this fix. As well, the contacts on the switch proper are done the same way and can be similarly fixed. __________________ "Never forget that only dead fish swim with the stream." -- Malcolm Muggeridge. "Truth cannot be brought down, rather the individual must make the effort to ascend to it." -- Jiddu Krishnamurti

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Input selector	Simo88	Everything Else	25	15th July 2009 01:33 AM
Boz AP1.7 Input Selector PCB	Stones	Pass Labs	2	14th November 2006 06:08 AM
input selector	lawbadman	Digital Source	8	10th September 2005 09:45 AM
Input selector: need help	Cobra2	Parts	1	8th March 2003 07:31 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

12th October 2007, 02:57 AM	#2
carlmart diyAudio Member Join Date: Mar 2001 Location: Brazil	It may all depend on how many positions and decks the Yamaha uses. I like the Grayhill selectors, and I use them. Contacts should be at least solid silver.

12th October 2007, 06:34 AM	#3
Bigred diyAudio Member Join Date: Jul 2007	Are you sure its actually worn/gone bad or maybe just in need of a blast of deoxit?

12th October 2007, 07:50 PM	#4
dmitririzzo diyAudio Member Join Date: Nov 2005 Location: Chicago	It's been cleaned twice. It has 5 positions. Thanks!

19th October 2007, 07:34 PM	#6
dmitririzzo diyAudio Member Join Date: Nov 2005 Location: Chicago	I was afraid of that. Any idea how I can find the part number and maybe track down a replacement? Thanks.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)