I'm trying to repair the logic board of an LCD monitor that died while giving off a burned smell.
It seems that an LCD driver chip and a MOSFET (I think) burned out. The chip was easy to identify (HV9982) and order, but I can't unambiguously identify and find a replacement for the other part.
It is labeled "540N 88KFG" and I think its form factor is TO-252 / DPAK. Below is a photo, there are three of them in the middle of the picture.
A related question is what characteristics I have to make sure to match if I can't buy an exact replacement. Searching around for "540N" MOSFET, I found some in other packages whose main data points were
- 100V source-drain voltage
- 33A current rating.
If those do indeed apply to this component as well, what else needs to match in a replacement?
Update: After looking around a bit longer it appears that IRFR3410PbF might be a reasonable replacement.