No sound on Powerbook G4

Go in to the "applications>utilities" folder. Run the "Audio/MIDI Setup" program. Insure the audio out is actually going to the headphone out.

Try putting in your OSX cd and holding "C" when it boots up. The problem could be with the board or it might be just a problem with the screen.

After it boots try seeing if you can get it to make sounds by pushing the volume buttons. If it makes the "click" noise then it is the screen that needs fixing.

Go to the Apple menu (top left) System Preferences > Sound click the Output tab at the bottom there is a Output volume slide bar, slide the blue upside down house all the way to the right (max volume) make sure the Mute checkbox is unchecked.

Boot it into single-user mode holding down Command(Apple) and S buttons when powering up. Then in terminal console, use chkdsk -fy. Use it and use it again until comes back with something like "Volume appears to be OK". Then use command: mount -uw / and then type reboot and try booting normally.
-juuko

check the cable for damages and plug prisels also

I seen a blinking folder with a question mark in the middle in folder, in the middle of a display screen, but not a camera.

Either way, you are not able to access your main desktop so that is where I want to help.

A blinking folder with a ? in middle, is an indication that your bootable Mac OS X volume cannot be found.

If you do, I would first recommend you try this procedure first:
(PRAM Reset)
Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} • First, hold in your power button for approximately 10 seconds to do a hard shutdown, if you have not already turned your Mac off.

• Once your Mac is shutdown, you will need to perform what is called a PRAM reset (Parameter RAM)
• Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously .

• Turn on the computer.
• Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
• Now, hold the keys down until the computer restarts and you hear the start up sound for the third time.
• Release the keys and allow the Powerbook G4 to start up.
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If this still returns you to a blinking ? folder, try this process:
Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} DISK UTILITYYou can use your Mac OS X install disc to repair your hard drive and Mac OS X volume using Disk Utility. Click the link below to try this procedure.
* Apple Support Link:
Use Disk Utility to Repair Disk

Should neither of these processes work and you still boot up to a flashing ? folder, then your only recourse is to use your Mac OS X installation disc and perform an Archive and Install procedure.
----------------------------------------------------------------------------

Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} This procedure also allows you to save your applications, files and folders without the old directory interferring with you then accessing those files and creating a new Mac OS X Directory.

Here is the Apple Support Link for that procedure:
Archive and Install



This should get your Powerbook G4 back to normally functionality without any serious data loss.



Regards,


-Mactechtrainer

it could be the inverter to the display, or the graphics chipset or the connection between them.

Try clicking on the circle with the line through it. Sounds like it is muted.

If a Mac is shut down while the volume is set to zero, the standard Apple startup chime will not sound, so it is impossible to say whether or not this symptom indicates a problem.
For a startup issue such as this, I would recommend zapping the PRAM and resetting Open Firmware.
To zap the PRAM, start with a powered-down machine, press the power button, then immediately hold down the four keys: command, option, P, R. After ten seconds or so, you should hear the optical drive reset, and then the startup chime (because the volume is reset to full by this procedure). Ten more seconds, another reset, another chime. After the second time you hear the chime, release the keys.
Shut the machine down again (if it doesn't start up successfully, hold the power button until the power goes off). Press the power button, then immediately hold down the four keys command, option, O, F. You will see some tech-speak on the screen, then it will wait for input. Enter the following three lines, pressing the "return" key at the end of each:
reset-nvram set-defaults reset-all
After the last line, your Mac will reboot itself. It should now boot much more reliably. If it doesn't, chances increase that you have a hardware problem. You may want to run the Apple Hardware Test from the DVDs that came with the PowerBook to check your memory and logic board. Failing this, you are in for a trip to the shop.

there is a hardware fault or full hdd ...

thi guys will help Micromen - London