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View Full Version : G4 startup and big fan problems




jtimageg
Nov 21, 2010, 12:57 PM
I have a G4MDD that has start up issues.
When I push the start up button, nothing happens. If I pull the power plug then reconnect it, the computer will start using the start up button on the front, but I noticed the start up chime is different (like older G4's) and the big fan doesn't start. Also icons in the dock don't bounce. If I then restart using the apple menu, the normal chime comes on, icons react normally, but the big fan still doesn't work.
Just had the big fan replaced so I wondering if I have bigger issues lurking.



Dave H
Nov 21, 2010, 01:23 PM
How old is the PRAM battery?

Nameci
Nov 21, 2010, 01:29 PM
I think PRAM batt lasts only around 5 years? MDD's are more than 5 years old, might be the PRAM batt.

jtimageg
Nov 21, 2010, 06:29 PM
Just replaced the pram battery.

jtimageg
Nov 21, 2010, 07:41 PM
The repair tech said he replace the pram battery when he replace the fan. I replace the pram battery as per your recommendation and now at least it starts so thanks Dave H and Nameci for that.

Still think I have a fan problem, tho.

ThunderSnake
Nov 21, 2010, 09:01 PM
The repair tech said he replace the pram battery when he replace the fan. I replace the pram battery as per your recommendation and now at least it starts so thanks Dave H and Nameci for that.

Still think I have a fan problem, tho.

If you have a multimeter, test DC Volts on the motherboard fan connector.