On 19 Nov 2005, at 11:30, nhc_design2004 wrote:
Hi Listers
A blue and white G3 iMac, about 4 years old, previously working quite
normally, now refuses to start up and is displaying the following
symptoms:
No sound on pressing button to startup, sometimes a quiet tick,
tick, tick
can be heard but not every time. No chimes of death or anything
like that.
No screen raster.
Holding the startup button for about 30 seconds with cause the
light in the
button to flash once, then the machine returns to its 'dead' state.
Sounds like somethings blown on the analogue board. I've had one or
two CRTs do this to me. It's not uncommon in G3 iMacs for the
analogue board to go. One of the symptoms on earlier models was the
power LED sticking on orange and not going green, but yours sounds
like a later revision with a white LED. The ticking is likely
something shorting on the board.
The lack of any decent fans in the case means heat builds up and over
the years the components wear out - much the same as they do in CRT
monitors (it is really a CRT monitor with a computer in it
afterall!). The problem is aggravated in some models by hotter
running CPUs/RAM and hot running hard disks.
If anyone ever gives me one the fort thing I'll do is fit a fan under
the handle to suck the hot air out.
--
Mark Benson
My Blog:
<http://mdblog.68kmac.org>
68kMac.org:
<http://www.68kmac.org>
Visit my Homepage: <http://homepage.mac.com/markbenson>
"Never send a human to do a machine's job..."
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