Question about Yamaha Audio Players & Recorders

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RX-V2500 stays in protect mode

Unit has preformed perfectly for two years. Has been attached to a Bose acoustimass 600 system the entire time. This week unit has started to instantly go into protect mode. Have done all the manul trouble shooting. Unit currently has all wires removed and only the electric cable attached, still clicks to protect mode. Help!!!

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  • margmacc May 23, 2009

    Ok, pulled the cover off and besides a very light cover of dust (2 years) she looks pretty pristine in there. Did not see any globs of glue or other sticky matter. Just a blue million electrical parts and componants.

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Hi,
    The set i in protection due to power supply. Some comonents being short (malfunction). It require proper checkup because in protection mode, Many components are involvd and protection is commanded by the processing IC (Main chip IC), If some where in the power or other sections any component creat problem processing IC take quick action to avoide further damages, that's why set goes in protection mode. I suggest you to check physically and most probebly capacitors must be blown or dehaped or popped. If you seen such things then change it therwise contact any expert because it is time taken procedure to find out which component is not working. Therefore contact any expert nearby to avoide any further damadges.
Thanks for using fixya.

Posted on May 23, 2009

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I just wanted to share my experience repairing my Yamaha M-60 power amp. After twenty years of use, the protection circuit wouldn't shut off. I did what the owner's manual said to do ... check speakers and cycle power. That didn't work, so it was time to either junk it or roll my sleeves up and go to work.

After removing the cover and blowing out the dust, I found a significant amount of old yellowish adhesive globbed under some components. The stuff was looking a little crusty and was covering the leads on some of the circuit board components.

I carefully removed as much of the old glue as I could and found that one of the leads on a diode was completely loose, Probably due to corrosion caused by the old yellow glue. Fortunately there was enough lead left to be resoldered back into place. So I gave it a try.

Posted on May 23, 2009

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