[SUB]Bet Ed knows. He is the OEM PL Guru right ?
I know I replaced all of them on both the PL 400 and the PL 700. It was kind of a PITA either way. Try and find and order those tiny bastards or just replace. Either way a pain so I went with the "best route". Did you have a chance to look over the voice recording app or decide fuck it.
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For a good technical reason
AGX is a very fast blow series for electronic instrumentation
AGC is a fast blow series for general application
AGX I squared T rating is lower than the AGC for an equivalent fuse rating.
The AGX5 blows in 1 second with 7A applied
The AGC5 blows in 1 second with 10A applied
Mouser always stocks AGX fuses.