One thing that will inevitably bite you on old hardware are dead capacitors…they either dry out, explode or leak inevitably regardless of their initial quality after 15 years. On one of my GA-5AX boards I had some instabilities and this is exactly the sign of dried-out capacitors :(
So I ordered a bunch of new ones to replace them all, there are 2 types on the motherboard:
- 8mm diameter 330uF 25V a bit everywhere
- 10mm diameter 330uF 25V close to the CPU
Replacing them all (around 20 pieces) took me a good 2h of careful work…the soldering wasn’t that easy to do and I had to drill trough some of the old soldering with a very small drill bit.
The new capacitors are also a little bit shorter, 12.5mm height instead of 15mm which is absolutely perfect around the CPU as many heat-sinks will now fit off the shelf without requiring some adjustments. Oh and the board is stable again now :)
You may have notice the 2 places on the previous picture where capacitors were planned on the motherboard but never fitted? Well meanwhile I soldered some in there and it didn’t change anything…nothing burned :)