[rainboy]

adamissimo wrote:I have to confirm that after resordering hair cracks by the relay contacts everything started working fine! Thanks!

Hi All,
I’m glad to have found this thread. I suspected that my AEG T86581IH3 drier’s EH0 problem doesn’t come from the power line or elsewhere, and it needs a closer look on the main board, but you guys confirmed that suspicion. Same error and symptoms as described before me: First cycle usually running well, second cycle stopped somewhere in the middle with EH0 error.

The root cause of the cracked joints on the relay driver side goes back to the “smart” people whom have invented and imposed the lead-free soldering. It is a well-known fact that no matter how hard the manufacturer and technology providers are trying, it’s still more brittle and prone to fatigue, than the ones with the slightest content of lead (3-4{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d}).

I suspect that the issue is seen only at the driver pair of legs of the relays due to them being the only “moving” components on the board. The other smaller Omron relay has also started to show signs of fatigue around the driver legs, so I suggest if you must open your machine due to the cracked joints, do yourselves a favor and touch-up the other relay’s legs too.

I ran a quick check of the rest of the board, but didn’t really find any other soldering issues. Too bad that I’m not allowed to upload some of the nicest pictures of the cracks…:-(

Many thanks for the fix, whoever came up with it first.

[Author]

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