on 24/04/05 01:09, Christian Kotz at [EMAIL PROTECTED] wrote: > Sorry what I meant by three strikes is first I power it up and the HD > moves to position but there is no tone or screen activity so I push the > reset button and boot it again, by this stage the screen is on but no > sound or HD activity. Third time/second reset it fires up with start up > tone and OS loading. This is if the computer has been shut down and > powerless for say over 10 minutes. No problems when restarting. When > waking from sleep it also needs to be reset, otherwise just a black > screen. As for the RAM it was a single 128 MB module but I swapped it > with 2X 64 MB modules and no change. Also it has a fresh clock battery > which I thought was flat and causing the problem but apparently not. > > Regards Christian > On 23/04/2005, at 11:59 PM, Daniel Kerr wrote: > >> On 23/04/2005 11:53 PM, "Christian Kotz" <[EMAIL PROTECTED]> >> wrote: >> >>> Hi All >>> Anyone have any ideas what may be causing the following issues in an >>> iMac DV SE and how to rectify them: >>> >>> "3 strikes" before powering up, I have to reset it twice before the >>> screen will come on and the chime happens >>> >>> Surging/flickering in speakers, they buzz and make a flickering sound >>> even when the iMac is shut down and head phone in >>> >>> Visible screen refresh, the centre of the screen is clear but the >>> edges >>> seem to roll and quake. I think that has something to do with the >>> kinks >>> in the black cable that surround the CRT for some magnetic thing??? >>> >>> crashing in fullscreen mode for most Open GL games especially games >>> that launch movies >>> >>> It is using an older IDE HD taken from a beige G3 and I received it >>> dismantled so more than likely there's static discharge damage >>> >>> extra info: running 128MB RAM, OS 9.2, 4.2 GB HD rather than 13GB >>> >>> Anyone else had extreme issues like this or know what's the best >>> option >>> apart from part harvesting or trash? Is there hope? >>> >>> Regards Christian >>> >>> Disclaimer: I am not a computer technician!
When faultfinding electrical/electronic systems, if faced with symptoms like this (erratic operation in a few areas, not firing up at first) the first thing I'd want to rule out would be power supply problems - are all voltages as they should be and stable? - is some component/circuit on the way out and at the "marginal" stage - problems when cold and/or when under too much load, etc. To check though you would need to either be familiar with all the correct values & expected/acceptable variations, have a working machine to compare with or have suitable spares to change out & see if it fixes it. Maybe some Apple experienced tech could comment further or suggest what to check to rule this in or out. Cheers Neil -- Neil R. Houghton Albany, Western Australia Tel: +61 8 9841 6063 Fax: +61 8 9841 6137 Email: [EMAIL PROTECTED]
