PoweBook g4 won't start up possible logic board failure?

My PB G4 867mh 10.3.9 has entered Hospice mode. Screen stays dark and 3 short beeps occur. Tried to reset the PMU (shift ctrl option start wait 5 sec then start) sometimes works. System profiler states that built in memory slot is empty. with only the 1 gig that I added years ago. from what I have read it appears that this is a logic board issue. After successful "jump start" computer won't wake from sleep- but I don't want to leave it running as it gets very hot.
3 beeps= memory slot= logic board= S.O.L... right?
any suggestions? if anything I'd like to keep it viable to transfer data to new computer(although everything is backed up on ext hard drive).
thanks-

Jermsy:
Glad you were able to get booted. The Apple Hardware Test disk is a great tool. However, it is not the best test for RAM and a single run may not detect intermittend issues.
For a more thorough testing of RAM try Rember-Memory Test. In addition, when you boot from the AHT disk, run the tests in a loop by holding down Command + L during the tests. It sometimes takes dozens of repetitions to detect intermittent errors.
at one point little black boxes appeard with white text in them over the screen(reminded me of DOS--are these Kernals?)
What you saw was likely a kernel panic. These can be caused by either hardware or software issues. In your case, I would guess it was hardware.
If this built in RAM(?) has failed I probably need an apple dr. to fix?
Accessing the logic board requires a lot of dismantling, and even after that, I suspect that the RAM module is soldered directly to the logic board, and, as you guessed, would require a trip to the Authorized Apple Repair facility.
Good luck.
cornelius

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