04-05-2017, 09:14 PM
My opinion on the Flyback diodes is pretty well known. Ive seen blown OTs in amps that had flyback diodes and in amps that did not. But Ive never seen an amp without flyback diodes have a blown flyback diode.
I understand the purpose of the diodes, but from my perspective as a repair technician, The flyback diodes always seemed more likely to fail than the transformer, and that could be at a performance.
Is replacing the OT more expensive? of course... but Im not convinced the flyback will make a difference in the likelihood of the OT failing.
The "death cap" isn't a huge deal. Replace it with a X2 safety cap, and leave it in there.
Replace C16 if it hasn't been already. upgrade R41,R42, R47 and R48 to 5W resistors.
I understand the purpose of the diodes, but from my perspective as a repair technician, The flyback diodes always seemed more likely to fail than the transformer, and that could be at a performance.
Is replacing the OT more expensive? of course... but Im not convinced the flyback will make a difference in the likelihood of the OT failing.
The "death cap" isn't a huge deal. Replace it with a X2 safety cap, and leave it in there.
Replace C16 if it hasn't been already. upgrade R41,R42, R47 and R48 to 5W resistors.