MBP wont switch on - no chime - front light briefly on

Question

MacBook Pro 17" Models A1151 A1212 A1229 and A1261

Non-Unibody, Core Duo & Core 2 Duo Processors

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Symptoms:

Screen flashed, then died.

Now it wont start.

When I switch it on, HD spins up, DVD checks itself, front light goes on but screen stays blank and no chime.

Then a second later, everything dies, HD clicks off, front light off.

Checked for sounds by removing the RAM and switching on, seems to beep on a constant rythm. So Firmware is fine.

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Tell me more about this beeping and it being fine please. Beeping is not fine, what is the pattern of the beeps?

The beep goes: beeep, silence for 3 seconds, beeep, then silence for 3 seconds, etc.

I read in another thread that beeping sounds indicates an intact firmware chip, so thats something.

the power doesnt stay on so baking the bga is going to be a tricky affair. Do you think this a route that i should follow?

Tell me more about this beeping and it being fine please. Beeping is not fine, what is the pattern of the beeps? — mayer
The beep goes: beeep, silence for 3 seconds, beeep, then silence for 3 seconds, etc.

I read in another thread that beeping sounds indicates an intact firmware chip, so thats something. — Sebastian Scholle
the power doesnt stay on so baking the bga is going to be a tricky affair. Do you think this a route that i should follow? — Sebastian Scholle