This is a story of an old Lombard 400MHz in a pretty bad shape, with tue infamous power led symptom and no boot.
I decided to give a try today and reflowed the CU and here it is! A working Lombard!
Unfortunately I have a second one pretty damaged too, and that one didn’t came back from the dead, green led stays one and won’t boot.
But at least one is working and I could the best parts of the two to make a less damaged one!
Here is the procedure is used:
- remove the CPU card (obviously)
- remove memory modules
- remove the heatsink (carefully pry the mushroom shaped part
- remove the heatsink support: it had small tabs going under the CPU on each non-curved sides
- install the card on a circuit
- with a air gun preheat the board to 200°C
- Heat the CPU for few minutes at 300°C
- let it cool down by itself
- reassemble the heatsink
- test it!
I hope it will lasts!
I’ll post photos of the reassembled beast
I decided to give a try today and reflowed the CU and here it is! A working Lombard!
Unfortunately I have a second one pretty damaged too, and that one didn’t came back from the dead, green led stays one and won’t boot.
But at least one is working and I could the best parts of the two to make a less damaged one!
Here is the procedure is used:
- remove the CPU card (obviously)
- remove memory modules
- remove the heatsink (carefully pry the mushroom shaped part
- remove the heatsink support: it had small tabs going under the CPU on each non-curved sides
- install the card on a circuit
- with a air gun preheat the board to 200°C
- Heat the CPU for few minutes at 300°C
- let it cool down by itself
- reassemble the heatsink
- test it!
I hope it will lasts!
I’ll post photos of the reassembled beast
