12" iBk wont start- makes noises tho

iBook 1.2 Ghz 10.4.11 started just shutting off for no reason (No battery- just AC), now it wont start up at all. Ive tried the PMU reset several times, no good.
Now I hear power entering the ibook on start but I just get a (slightly) lumminated black screen . No chime. Just freezes there until I unplug it.
If I can get it to boot (looks less likely now) what Hardware test CD does it use?
Any ideas? The DC in board? Does this have a clock battery?
Thanks so much

Hey Steve,
OK we shimmed the 14" iBook too and replaced the HD. (The shim is nice and thick!) Now the ibook (14") starts with a loud fan noise, then beeps 4X, with 3 flashes.
OK, see here I'm getting confused and too many things are going on and being changed.
I did look up the error code about the Boot ROM, but how is this fixed?
Well if it is the Boot ROM it isn't repairable except by new logic board or swapping the ROM from an identical board.
However here's what the Service Manual for the 1.2 12" says:
"Computer beeps four times at startup
1. Four beeps indicates a bad checksum for the remainder of the boot ROM. The ROM
(which is located on the logic board) is bad.
2. If a RAM card is installed in the expansion slot, remove it and put in known-good and compatible RAM and restart.
• If symptom does NOT repeat, replace RAM card.
• If symptom repeats, replace logic board.
3. If no RAM card is installed, replace logic board."
So I didn't realize the RAM could cause this symptom.
If it is the ROM it could have been killed by static if you touched the logic board.
Richard

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