prasimix

Ok, obviously something is wrong with the combination of multiple Mean Wells. But not only the two LRS-150F but also the two IRM-10s located on the AUX-PS module. I did...

Ok, as you can see I got better results with bigger RC snubber (since one exists on the AUX-PS module), it now looks like this: 

I tried to swap LRS modules, but not AUX-PS (where IRM-10s resides). I'll do that and report here.

> For those of us without the hardware, where is the revision of this board source that is affected by this issue and same for the wiring diagram to the...

@PyroDevil as already mentioned, this issue seems to affects kit versions with 2 Mean wells in the first place. So you're safe (i.e. with original RC snubber on the AUX-PS...

Thanks Thomas for all your valuable suggestions. It seems that some more detailed investigation is needed. At the moment I think we have a good solution that does not require...

> If this is the cause of the failure, a TVS diode with a 50-100V rating on the input would help absorb energy from inductive spikes before it makes it...

We still cannot reproduce this issue. However, there is some indication that this issue could be related to #108. If that is true then DP (down-programmer) should starts to overheat...

Two additional protection mechanisms have been added for the DCP405 module ([#195](https://github.com/eez-open/modular-psu-firmware/issues/195), [#202](https://github.com/eez-open/modular-psu-firmware/issues/202)) in firmware [v1.7](https://github.com/eez-open/modular-psu-firmware/releases/tag/1.7).

No, damaged fuse holder is an indication that HW OVP tripped (as expected), i.e. triac is switched on and max. power is sourced from the power pre-regulator due to fact...