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FromWithin · 27 February 2019, 20:50

I switched on my A4000T for the first time in about 8 years. It powers on, but remains on the black screen. Physically, there doesn't seem to be anything wrong. A4000Ts have a lithium button battery, which is not prone to leakage like the others. All the capacitors look fine; it all looks just like it should. Of course, I don't really know what I'm looking for. Maybe something has leaked, but I can't see any evidence of that.

First thing I did was take all of the extra boards out. No change. Then I took out the SIMM. No change. I tried switching from the 040 board to my PPC board, still a black screen.

I put the 040 back in and noticed that the power light flashes. It does 11 flashes, the last holds for longer than the others, like the following:

X.X.X.X.X.X.X.X.X.X.XXXX....[repeat]

Each flash is accompanied by a tiny click from the speaker.

This only occurs with the 040 board in-place. With no CPU board or with no PPC board, there is a black screen but no flashing.

Does anyone know what the flashing sequence means? Any thoughts?

27 February 2019, 20:50	#1
FromWithin Music lord Join Date: Jun 2003 Location: Liverpool, UK Age: 50 Posts: 630	A4000T won't boot I switched on my A4000T for the first time in about 8 years. It powers on, but remains on the black screen. Physically, there doesn't seem to be anything wrong. A4000Ts have a lithium button battery, which is not prone to leakage like the others. All the capacitors look fine; it all looks just like it should. Of course, I don't really know what I'm looking for. Maybe something has leaked, but I can't see any evidence of that. First thing I did was take all of the extra boards out. No change. Then I took out the SIMM. No change. I tried switching from the 040 board to my PPC board, still a black screen. I put the 040 back in and noticed that the power light flashes. It does 11 flashes, the last holds for longer than the others, like the following: X.X.X.X.X.X.X.X.X.X.XXXX....[repeat] Each flash is accompanied by a tiny click from the speaker. This only occurs with the 040 board in-place. With no CPU board or with no PPC board, there is a black screen but no flashing. Does anyone know what the flashing sequence means? Any thoughts? Last edited by FromWithin; 27 February 2019 at 21:20.