I upgraded four 3560E, 12.2(44) to 12.2(55)SE
Three 3560 works fine, the last one stops after 17-18 seconds with a solid green LED.
I cant get into ROMmon, the switch doesn't boot up. its like "dead but still alive"
1: Removed all SFPs.
2: Reseat PSU and fan moduls.
3: Replace PSU and fan modules.
4: Try to get into ROMmon.(pushing mode button and break seq.)
SYST: Blinking Green
18 s--> (only testet up to one hour)
SYST: Solid Green
A working 3560E
Startup LED information
If I compare a working switch with the faulty switch I can see about 18 seconds into booting
SYST change very fast from green to amber and continues with booting,
this doesnt happend on the faulty switch (solid green 18 seconds).
Pushing MODE button, doesn't get me in to ROMmon, this works for all the other switches.
On a normal 3560 it takes around 40 seconds before I get in to ROMmon.
With this faulty switch it stops after 18 seconds(solid green) and it doesnt respond.
Would be nice if anyone could point me in the right direction