UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

paulsherwin · 19th Oct 2019, 5:36 pm

They do seem to vary a lot, as with other notorious transistor types. I was looking at an amp the other day, and the advice was to swap out all the 2SC458s because they go noisy and leaky. There didn't seem to be anything wrong with them, but you never know if you've got a good batch or if they're going to fail next week.

19th Oct 2019, 5:36 pm	#3
paulsherwin Moderator Join Date: Jun 2003 Location: Oxford, UK Posts: 27,943	Re: Good batches of AF11x ? They do seem to vary a lot, as with other notorious transistor types. I was looking at an amp the other day, and the advice was to swap out all the 2SC458s because they go noisy and leaky. There didn't seem to be anything wrong with them, but you never know if you've got a good batch or if they're going to fail next week.