Hi there,
I have been using this nice 24 port layer 2 switch for a couple of years now. Last week it started to cause serious troubles by rebooting without any reason and by hanging at startup with all the status LEDs permanently lit.
When I press the packet-processor down gently, the booting continues and the LEDs turn off but the unit will not run stable. When pressing down the processor while it is running might cause the unit to reboot.
This looks to me like a case of faulty solderings of the BGA chip, a Marvell 98DX240-BCW. The packet-processor doesn´t have any heatsink atttached to it and gets considerably warm during operation.
The pictures show the packet-processor and it´s surroundings and the bottom side with several capacitors.
I wonder if there´s a reliable way to resolder / reflow or even reball this chip to make sure it will operate stable for another couple of years.
I have been using this nice 24 port layer 2 switch for a couple of years now. Last week it started to cause serious troubles by rebooting without any reason and by hanging at startup with all the status LEDs permanently lit.
When I press the packet-processor down gently, the booting continues and the LEDs turn off but the unit will not run stable. When pressing down the processor while it is running might cause the unit to reboot.
This looks to me like a case of faulty solderings of the BGA chip, a Marvell 98DX240-BCW. The packet-processor doesn´t have any heatsink atttached to it and gets considerably warm during operation.
The pictures show the packet-processor and it´s surroundings and the bottom side with several capacitors.
I wonder if there´s a reliable way to resolder / reflow or even reball this chip to make sure it will operate stable for another couple of years.
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