hello everybody,

My dear Leak Point One is giving me trouble. I have this great tube amp
for about 20 years now and always was a pleasure to listen to. I only
did some minor modifications in the beginning (I bridged and replaced
some capacitors). First time I put the power on in a room where it was
very cold and the GZ34 went. I thougt it was the cold or the age of the
tube. But now I put in another GZ34 and it also blew so there's my
question;
Has anyone had this before? All suggestions are most welcome. I haven't
got the schematics so if anyone can send me a copy that would be even
better. Thanks in advance, Derk-Jan