Options for repairing worn head unit knob
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=89160
Printed Date: May 10, 2024 at 10:18 AM
Topic: Options for repairing worn head unit knob
Posted By: Sad, little man
Subject: Options for repairing worn head unit knob
Date Posted: January 18, 2007 at 12:36 PM
I have an Alpine CDA-9811 that's probably around three years old at this point. I'm pretty happy that it's lasted this long, and everything has been pretty bullet proof. But, it seems like the volume knob is getting excessive wear in it. It has a lot of play in it if you wiggle it around, and sometimes instead of going the direction I turn it, the head unit will read it as turning the other way. I think overall the knob itself is just getting worn out after years of being turned back and forth. Is this something I could send the faceplate into Alpine to have fixed? All it needs is a new knob unit soldered into the faceplate. It'd be even better if I could just buy the knob myself and not pay some inflated repair costs, but somehow I get the feeling that Alpine keeps any replacement knobs they have in a secret room somewhere below their headquarters in Los Angeles.
Replies:
Posted By: haemphyst
Date Posted: January 18, 2007 at 3:17 PM
It's not a resistor in those, like in a regular two-knob head unit. It's a digital volume control - what's called a "rotary encoder", and there is no cleaning them. The knob and/or the encoder (probably the knob, based on tour description of the issues...) needs replacement, and it'll be worth it for you to send it out to Alpine for the repair.
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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: flobee4
Date Posted: January 18, 2007 at 4:16 PM
I did a search for you on www.pacparts.com (pacific coast parts). They have parts for Alpine units. The volume control knob(if thats all you need) is out of stock. But maybe you can call them and find out when it's coming back in. Also in the past for kenwood units, I've had them fax me the blow out of a faceplate with the part numbers and called them back to order what I needed. You can try that also - good company to deal with. here is the direct link for the 9811 parts: https://www.pacparts.com/model.cfm?mfg=ALPINE&model_id=CDA9811&back=0&action=list_part&Cfid=786889&CFTOKEN=90673004 Good luck, Frank
Posted By: i am an idiot
Date Posted: January 18, 2007 at 8:41 PM
This control IS repairable Let me know if you need instructions the hardest part is getting the control unsoldered out of the board. Or for 30 bucks plus shipping I can fix it for ya PM me for References and shipping info.
Posted By: Sad, little man
Date Posted: February 15, 2007 at 10:46 AM
So I ordered the "KNOBROTALY ASSY" (PN 36B03242K01). I actually got two because they were $7 and I didn't want Alpine to discontinue it on me in the future. So what finally shows up in the package? Two shiny new volume knobs to slide onto my existing control.  (How is it an considered an assembly when it's only one part!?) Anyone know the right PN? I have a feeling this will be very hard to find since it's a soldered part on the faceplate, and not detachable. ------------- '96 Mazda Miata
Posted By: i am an idiot
Date Posted: February 15, 2007 at 7:45 PM
In case you missed my earlier post this control is repairable,
it is very simple and all items are available at a hardware store.
Posted By: Sad, little man
Date Posted: February 16, 2007 at 11:53 AM
Sorry, I thought you meant repairable as in able to be replaced. You have a PM.
Wait, never mind, your PM box is full.
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'96 Mazda Miata
Posted By: i am an idiot
Date Posted: February 16, 2007 at 6:20 PM
Or try this part number it is the right one 40T55277Y03 listed as the encoder for a 9813
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