Re: How I fixed a dead net6501 (Red Light Of Death)

Paride Legovini wrote on 26/02/2018:
> On 2018-02-26 08:36, Rudi van Drunen (Xlexit) wrote:
>> Hi all,
>>
>> I just replaced the electrolytical caps in 3 boards that demonstrated th=
e=A0
>> RLOD phenomenon, and at least 2 of them did not get get fixed, so it mig=
ht
>> not be =A0*the* solution :-(
> =

> I'm very sorry to hear so. Unfortunately I also have to report a
> failure: a couple of days ago I tried to repair another net6501, but it
> didn't come back to life. In the end I replaced all the electrolytic
> capacitors but the two SMDs near the CPU. It didn't help.

Just a quick follow-up.

The first net6501 I fixed is still working fine, I never saw the RLOD
again.

The second one has been fixed too but the story is a bit more troubled.
As the board was given for dead, I tried to replace the two SMD 680uF
e-caps near the CPU with two 820uF ones, like those on the fixed board.
I did so because I had those at hand, I didn't really hope to fix it.

After powering the board, one of the two ICs near the e-caps lost its
magic smoke. This is the component:

https://www.infineon.com/dgdl/irf8313pbf.pdf?fileId=3D5546d462533600a401535=
60d38521d63

I probably fried it with my soldering iron. Again, I gave the board for
dead. Later, a friend of mine with better soldering skills (and a hot
air station) replaced it, and the board came back to life. It is still
working and did never show the RLOD again.

Paride