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rodrigo vazquez Posted on Jan 03, 2007

Volume knob damaged

The volume knob it´s not working after a blunt object hit the case,it got sunk into the case and it also spins,but it is not working. Maybe it just need to be resoldered but I don´t know how to de-assembly the case. Thanxs!

  • rodrigo vazquez Jan 09, 2007

    Well, my warranty expired a long ago, but I finally fixed it using the directions to open the case.Check the following link, it refers o a different model but the case is the same.

    Opening the case leaves scratches and scars on it and it´s not quite easy (took me 1 hour and a half to open the case), and the player it´s not the same after the "surgery".I found that the knob won´t need to be resoldered, but glued in oder to work again:you´re right,they work great but the knobs are just too fragile.

    If you decide to glue it,be careful not to use to much adhesive (I used a cyanoacrilate adhesive and the tip of a screwdriver to apply it ,avoid silicon).

    Too much glue may smear the knob assembly and may get stuck.

    Now for the power button:that´s easier but still you have to open the case.Under the button there is a micro-switch,the plated button pushes the micro-switch and it´s jointed with two little spikes, so maybe the plated button it´s just shattered and a little glue will do the job.

    Good luck,here´s my emal address in case you need more info:

    [email protected]


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  • Posted on Jan 09, 2007
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My first sons rio c2100 did the same thing . I needed to return it in the mail for the warranty exchange for a refurbished one.Is your warranty still in ? I hope so . If not , they will tell you to buy a referbished one for 99.00 .CRAZY !!! I had bought 2 (for my 2 sons). Now, my second son's power button won't work. The button is really loose and wiggley. He dropped it from only 4 inches onto a carpeted floor .I cannot find anyone to fix this for me . The design on these are absolutely stupid. Do you have any suggestions for me??

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The problem resides in the circuitry that the knob is controlling. Unfortunately this knob has a full range of motion, which means that it is simply controlling a computer chip within the unit. (i have an 1801 as well). What has happened is that some component on the volume board has gone bad, which is resulting in your non functioning volume knob.

Unfortunately this is usually a job for a professional.

If you have standard electronics skills (soldering / disassemble / reassemble), you can open the case and find where the volume knob leads to. There should be a smaller board, and see if you can access it. Usually they are rather hard to get to, or to get free to actually see what is going on. The best solution would be to find a parts receiver, and swap boards. This shotgun approach changes everything. Otherwise, look for any damaged components on the board. Swap out any components that are damaged, or appear damaged with comparable replacements.

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PLease dont forget to rate for your free question..

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