Pilot flying C-414 aircraft reported radio failure inflight. Pilot continued to destination and after landing found that their passenger had inadvertently dislodged the avionics fuse which had caused the radio failure.

Narrative

Radio failureOn Day 0; I was on a pleasure trip from ZZZ1 to ZZZ2. I was on an IFR flight plan for the duration of the trip. However; the weather was clear until we got to ZZZ2. ZZZ2 was overcast with ceilings reported as 2;700 ft. I went across the lake at 13;000 ft. I was cleared to 4;000 ft. and direct to ZZZZZ; the initial approach fix for the RNAV XX approach to ZZZ2. I was not cleared for the approach. I had been talking to ZZZ Center. Descending through 5;500 ft. I reported to ZZZ that the cloud tops were at 5;500. I had no acknowledgement from ZZZ. When I got to 4;000 ft. I reported it to ZZZ and again there was no acknowledgement. I tried Unicom for ZZZ2 as sometimes they have a ranger at the airport to report conditions. Again; I got no reply. At this point I noted the coms area of my Garmin 750 was 'X'ed' out. I had radio failure. This was a situation that I had never encountered before.Since I didn't know why my coms were out I had no way to contact anyone. At 4;000 ft. I was now VFR even though AWOS had reported ceilings over the island at 2;700 ft. There was no traffic in the area. I knew from having been to ZZZ2 many times that I would lose ZZZ somewhere in the 3-5;000 ft. altitude area. It was not unusual for the ZZZ2 airport to not be staffed. However; with my coms 'X'ed' out on my 750 it appeared that I had radio failure. At the time I was unaware that my passenger in the co-pilot seat had bumped my avionic fuse area with his knee allowing the fuse to the coms to pop out; turning off my coms. When looking at the fuses I simply missed that that fuse was popped out. At the time I didn't know the procedure for lost coms when not on the approach. I debated turning my transponder to squawk 1200 and landing. I thought about squawking 7600; and landing. However; I wasn't aware I should have gone into a hold at the last fix ZZZ Center had given me. Since I was VFR; I elected to land using the approach. I was VFR so if there had been traffic in the area I would have seen them. Meanwhile; ZZZ Center tried to raise me by their radios and other planes in the area; as well as through the ranger at the ZZZ2 airport without success. After I landed I was asked to call ZZZ Center. I spoke with an agent in ZZZ who nicely explained that I should have gone to my last fix and entered a hold. The issue I have with the idea I should have gone into a holding pattern at the last fix given me is that it appeared to me that I had no radios to contact anyone and it appeared there was nothing that was going to improve that over time. At the time I was VFR so not a danger to not seeing a plane in the pattern. Reviewing the FAR's it seems like the option to land is ok given the situation I was in.In retrospect. I should have checked the coms fuse more closely. It was an easy fix; but I simply missed it. Given that my coms were out for the foreseeable future and I was in VFR weather; I think the next best option would have been to squawk 1200 and land. Lastly I could have squawked 7600 so Center would at least known my issue and landed.