Gould 9500a Oscilloscope

Discussion in 'General Electronics Chat' started by rburley, Mar 2, 2013.

  1. rburley

    rburley Thread Starter New Member

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    Mar 2, 2013
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    can any one help the cmoss battery failed and the scope has lost its set up and only boots to blue intro screen.
    Can any one tell me how to fix the problem
  2. PackratKing

    PackratKing Well-Known Member

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    Upstate NY. U.S.A.
    For starters... Is the battery spot-welded into the circuit, soldered, or have a slip-in clip arrangement.

    Caution : use deliberate moves when changing a power supply for a Cmos circuit... so you don't get a repeatable pulse that may "retard" the circuit...
    Does it have a ROM chip to reboot the startup protocols ?? Cmos has a bad habit of ' losing its mind ' when deprived of power.
    Last edited: Mar 2, 2013
  3. rburley

    rburley Thread Starter New Member

    Joined:
    Mar 2, 2013
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    When the unit is powered off , you push on the “Hold all” button and start on the unit, after two beeps you let off on “ hold all” button
    The unit starts and on “ cold start” and will reset the memories


    The battery on the processor board when 100% dead, will auto boot as described. When it is 50% dead, you will see strange things occur and if the system is still functional, the COLD BOOT method described will usually cure the problem as long as the scope is on.
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