Crown CE1000 amp need help

Discussion in 'General Electronics Chat' started by kinch8, Feb 24, 2012.

  1. kinch8

    Thread Starter New Member

    Feb 22, 2012
    3
    0
    Hello all about circuits.
    I have a Crown CE1000 amp that has the following eight resistors blown.
    I having difficulty finding these resistors.
    They are 0.4 OHM 1 watt 5% 2512 T/R
    I have looked at digikey but they don't have this exact resistor.
    Please HELP!
     
  2. bertus

    Administrator

    Apr 5, 2008
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  3. kinch8

    Thread Starter New Member

    Feb 22, 2012
    3
    0
    Hi Bertus,
    YES...I did read that forum. that discussion is what got me signed up for all about circuits. But I still would to know where is a good online parts supplier for resistors would be.
    Part is 0.4 OHM 1 watt 5% 2512 T/R resistor.
     
  4. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,346
    Hello,

    The amplifier you have must be an other revision than the schematic in the other thread.
    In the schematic I have there are 8 resistors of 1.8 Ohms paralel at teh positition you show.

    [​IMG]

    There must be a reason why the resitstor are blown.
    Possibly the transistors connected to these resistors also are blown.

    I have found the resistor you need at Mouser.
    They can be found in the catagory "current sens resistors".
    There are two sizes available:
    http://www2.mouser.com/ProductDetai...=sGAEpiMZZMvdGkrng054t4qCYjCSzmhRi57subLCc4I=
    http://www2.mouser.com/ProductDetai...GAEpiMZZMvdGkrng054tyICTTIhjP%2bGphdMxut3BN4=

    Bertus
     
  5. kinch8

    Thread Starter New Member

    Feb 22, 2012
    3
    0
    Hi Bertus,
    Thanks for the good info on the Mouser site.
    I've got a good pic of the circuit board for the CE1000
    amp. I wanted to get your recommendation on along with
    replacing the obvious blown Resistors if I should as well
    replace the One - Q221 and Four Q123,Q124,Q127, Q128 Transistors.
     
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