22-04-2012, 02:32 PM
Sorry to hear of your misfortune with the Hacker Autocrat Joe - they don't like it up 'em!
I can tell you how you could 'blow' not three but four valves even with the set not plugged in, and many people have done, then done the same again with the replacements!
By pulling them out of those diabolical valve sockets on DAC90As which have spring rings which are meant to keep the valve in place, but which simply destroy the glass pip on the valve. Those rings have absolutely no useful purpose - even if the set is turned upside down the B9A valves won't drop out. Dire.
It's an expensive lesson to learn.
It doesn't matter how many times the cautionary advice is given to people to remove and bin the springs before attempting to remove the valves, you still get people saying 'I've just taken the vales out of this set and they've gone white inside - why is that - does it mean they're no good now?'
The DAC90A is my least favourite set, which to me, is a dismal reminder of the post-war austerity years of ration books, power cuts and queues. The valveholder springs are just one more reason for me to dislike them! It only abounds in such numbers as it was a rental set. If I ruled the world I'd order them to be confiscated and consigned to landfill after having removed the spring rings and had them thrown into the furnaces of hell
I can tell you how you could 'blow' not three but four valves even with the set not plugged in, and many people have done, then done the same again with the replacements!
By pulling them out of those diabolical valve sockets on DAC90As which have spring rings which are meant to keep the valve in place, but which simply destroy the glass pip on the valve. Those rings have absolutely no useful purpose - even if the set is turned upside down the B9A valves won't drop out. Dire.
It's an expensive lesson to learn.
It doesn't matter how many times the cautionary advice is given to people to remove and bin the springs before attempting to remove the valves, you still get people saying 'I've just taken the vales out of this set and they've gone white inside - why is that - does it mean they're no good now?'
The DAC90A is my least favourite set, which to me, is a dismal reminder of the post-war austerity years of ration books, power cuts and queues. The valveholder springs are just one more reason for me to dislike them! It only abounds in such numbers as it was a rental set. If I ruled the world I'd order them to be confiscated and consigned to landfill after having removed the spring rings and had them thrown into the furnaces of hell
Regards, David.
BVWS Member.
G-QRP Club Member 1339.
'I'm in my own little world, but I'm happy, and they know me here'
BVWS Member.
G-QRP Club Member 1339.
'I'm in my own little world, but I'm happy, and they know me here'
