Man,as much as I hate to say it,I'm in the same boat.After singing the praises of this amp after the tube switch mine recently went Supernova....
He also pointed out with the current bias system all it is going to take for another total meltdown is one tube going bad and the system is wrecked!I don't see why Traynor doesn't buck up and rectify the old amps with the new bias setup....
Sorry to hear about that, your review helped convince me to get one of these things.
It seems like mine and most of the problems I have been reading about all stem from:
"a bad tube fried the autobias and took out some of the circut board"
...and the stories that end well seem to often end with:
"traynor (or my local tech) moded it to adjustable bias and now it works fine."
As I mentioned before, if I understood what I was getting into, I would have sprung for a new YBA200-2 or a VB-2.
It does seem like everyone who has a YBA200 should either send it back to Traynor or have a tech mod it for manual bias.
Those who are thinking of "saving" a few bucks by purchasing a YBA200 should run the following numbers.
Price of used YBA200
+shipping
+whatever tubes I will want to upgrade to
+an upgrade to adjustable Bias
Is it any lower than the price of a new
YBA-200-2 (which comes with KT88's, adjustable bias, free shipping from musicains friend and a 2 year warranty.)
+ What ever preamp tubes you may want to upgrade to