IRFI540N install orientation and lack of availability
Posted: 21 Nov 2017 22:50
Q6 and Q7 are somewhat unobtanium. I found some allegedly NOS for sale on eBay but that's always a crap shoot. That said, the crooked logo on the supplied transistors makes them suspect as well. The scarcity of these parts does not bode well for future repairs. Is there a substitute?
The silkscreen shows the tab is away from the edge the board yet the rear panel has what appears to be a place to heat sink the MOSFETS. Which way are they supposed to be installed?
The silkscreen shows the tab is away from the edge the board yet the rear panel has what appears to be a place to heat sink the MOSFETS. Which way are they supposed to be installed?