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Thread: 7600/132 no start-up chime-help

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  1. #1
    Join Date
    May 2001
    Location
    Bloomington, MN USA
    Posts
    6

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    My system is a 7600/132, 604e 233mhz processor upgrade, 192 mb ram, 512 L2 cache. The computer will not chime on only on start up. It does chime on restart. I am not sure when the start-up chime stopped, but the computer seems to run fine. I want to do some upgrades, but I do not want to put money into the computer and have it fail. I know the startup chime is a self-test and indicates the basic hardware is okay. To try to solve the problem I have done the following: 1. run Norton Disk Doctor, Apple Disk First Aid and Tech Tools system analyze. All checked okay. The Apple Profiler also reads everything as it is installed. 2. installed two new batteries. 3. initialized the hard drive and reinstalled all applications. 4. removed all ram, vram, cache, daughter card and blew dust out and reinstalled. 5. Tested ram with Newer Technology's Gauges Ram-o-meter and it passed.

    The start-up chime was missing before the processor upgrade. I also was using this processor in a 7500/100 without problem.

    I will appreciate any input. I do not know where to go next. Thanks. Greg

  2. #2
    Join Date
    May 2000
    Location
    Cordova, TN
    Posts
    2,428

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    That will happen when you have external speakers disabling the internal speaker.

  3. #3
    tachyon Guest

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    have you tried a logic board reset? With the power out, try removing the PRAM battery for over 10 minutes. This zaps your PRAM amongst other things.

  4. #4
    Join Date
    May 2001
    Location
    Bloomington, MN USA
    Posts
    6

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    Thanks for the replys. I do not have any external speakers connected and I have left the battery out for 24 hours. The computers clock maintains the correct time also so the battery seems to supply current to proper components. Is their any way to test the logic board myself?

  5. #5
    Join Date
    May 2001
    Location
    Bloomington, MN USA
    Posts
    6

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    Okay now I really feel dumb. I do have external speakers. I have a ViewSonic 17GA monitor which has speakers within the cabinet. I connected them so long ago I overlooked them. I unplugged the sound cable to the monitor and I now have the start-up chime back.

    The next question would be does having the monitors sound cable connected and no start-up chime cause any trouble with the system? The start-up chime indicates all start up components are okay and the sound cable does interfere with the chime; therefore does the sound cable also interfer with any of the start-up hardware?

    Any thoughts?

  6. #6
    Join Date
    May 2000
    Location
    Cordova, TN
    Posts
    2,428

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    I thought so!

    The startup chimes sound originates in the bowels of the computer (actually the ROM or PRAM or NVRAM or some dark place like that) and is separate and distinct from the normal sound system. With the external speakers disconnected, you can't regulate the chime volume; ever noticed?

    On a cold start, the only way for the chimes to be heard is thru the builtin speaker because the regular sound system is not ready yet (on a restart, it is) and the external speaker plug is muting the internal speaker.

    No harm is done. The chimes are still chiming (you hope). You just can't hear them. The chimes are merely a aural diagnostic tool.

    Maybe trag knows a way to jury rig the speakers. An extra speaker off the logic board should work.

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