bosch boom box troubleshooting

Discussion in 'General Electronics Chat' started by lemoncoke, Oct 22, 2008.

  1. lemoncoke

    Thread Starter New Member

    Oct 22, 2008
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    0
    I have a bosch boom box that I took apart to solder the speaker wires,now it doesnt work. The problem is that the display on the radio comes on but nothing else. It has a gfci outlet on it and that works, but the radio and the display don't work. It makes a high pitch noise when I plug it in. I replaced the fuse in it and it still does't work. I am just wondering if this is something I can fix,with someones help from here or not any help would be appericated very much. By the display I mean the numbers on it don't come on or the radio stations. Is there any basic things to check? I got this radio for free and don't want to put much money into it if possible. Thnaks Hope this enough info
     
  2. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    Do you have a part number of it?
    When you was soldering, did you had the plug on the outlet?
     
  3. lemoncoke

    Thread Starter New Member

    Oct 22, 2008
    4
    0
    model is PB10 and no it was not plugged in to outlet when soldering.
     
  4. lemoncoke

    Thread Starter New Member

    Oct 22, 2008
    4
    0
    not sure what you mean by part number, or is it the model number?
     
  5. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    Did it work before you open it?

    Check for the case you disconnected the cable connecting the display with the main board or another cable (usually they are root cables).

    Did you solder anything on the pcb?
     
  6. lemoncoke

    Thread Starter New Member

    Oct 22, 2008
    4
    0
    yes it worked before I took it apart and no I just soldered the speaker wire.
     
  7. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    Well, we cant guess from here!!

    I think that you unplugged an internal wire accidentally. It may be not obvious so check all the cables for proper connection on the pcb.

    Another think i have in mind is the case you were charged at a high voltage (static electricity) and when you touched (if you did) the pcb you destroyed a mos transistor or a chip because they are sensitive to static electricity.
     
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