Royy - Bias current is not difficult to adjust but it's not the issue here. The issue is that you don't know what it is. You might make mistake and damage your speakers, as Tobias already stated.
Be aware, that you might have more damage than output transistors - transistors driving them often fail as well. 5350 uses Mosfets for the output, if I remember correctly, and I don't even know where usually operating point is set for Mosfets.
Whatever you do - unplug your amp. Switching OFF is not enough.
I'm surprised that 5350 doesn't have output protection. Cambridge A3i I had once had all sorts of protections (overcurrent, temperature, dc voltage) and was designed by Creek people.
Be aware, that you might have more damage than output transistors - transistors driving them often fail as well. 5350 uses Mosfets for the output, if I remember correctly, and I don't even know where usually operating point is set for Mosfets.
Whatever you do - unplug your amp. Switching OFF is not enough.
I'm surprised that 5350 doesn't have output protection. Cambridge A3i I had once had all sorts of protections (overcurrent, temperature, dc voltage) and was designed by Creek people.