Question about RCA RS2652 Shelf System

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RCA 5-CD Shelf System, RS2654 Fuses

Ive had my RCA 5-CD Shelf System, RS2654 for a little over a year it worked perfect till bout 3 weeks ago the fuses blew so i went and asked the company what to do they said go to radio shack and buy replacements but when i installed them they blew instantly and now i cant reach the company so i figured id go up some wattage so i bout some that could hold more watts but even they blew could you tell me whats wrong and or how to fix it or at least what i should do??

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  • andy vice Mar 22, 2007

    how do i test for a short???

  • btc9090 Nov 06, 2007

    I have RCA2654 .It is not Powering up.I opend its's main power supply and found resistance R886 blown up and fuse 505 opened.Can somebody help to trace the problem and value of resistor.Better if someone has circuit diagram.You may forward circuit diagragm at my mail btc9090@yahoo.com

    Thanks

  • BobDS Dec 27, 2007

    My husband received the RS 2654 unit for a gift last year. We weren't able didn't get it set up until last month because of space. Today it died. No power! No nothing. Any help would be appreciated!

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I traced the portion of the circuit involving the fuse and failed resistor. Fixed the problem by replacing R886 with a 1.2K, 1/2 W resistor, a zener diode that had heated the circuit board and tested bad with a 15 volt, 1 watt zener and replaced the blown axial lead 1.5 amp fuse. I also noted a jumper missing that would connect the common of the circuit with the failure to the main ground of the rest of the board. I installed the "missing" jumper thinking that this was probably the root cause of the problem.
With these repairs the RS2654 has worked fine for many hours.

Don L

Posted on Mar 18, 2009

  • jrobin4450 Oct 16, 2012

    can you tell me the lcoation of the zener diode?

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  • Master
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Never ever replace a fuse with a bigger one, you are lucky the unit did not blow up and statrt a fire. When a fuse blows there is usually a reason.There is a short in the main power supply or the output stage. You will need to test for shorts on the main transformer, B+ rectifiers and the main filter capacitors. If that does not show any shorts, you will need to test the audio output circuits for shorts on the audio output IC's. Good Luck

Posted on Mar 22, 2007

  • Larry  Dillon
    Larry Dillon Mar 22, 2007

    You will need to use a multimeter, if you do not have one or if you do not know how to use one, you should play it safe and get this unit looked at by a pro, there are no user replaceable parts inside these units.

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