Hasafraker,

I also have board rev7 2009, and my impression was that pin 6 was unconnected. However my board is installed and I do not have a photograph of the tube-holder side before the holders were installed.

Will check this out today, because I now see that it is possible that my caps are shorted out by the leg of the trace under the tube holders.

UPDATE - GOOD NEWS and BAD NEWS

Well - dug out the multimeter, and it turns out that my CCE caps are indeed shorted out on the tube-side of the board. A pain now to try and cut that trace - but better sound quality to come in the end!

Can somebody please publish a photograph of the tube side of the board showing how these traces run. Steve - could you please indicate which revision of the boards first incorporated the pins 3-6 traces.

Sitting looking at the internals right now - got a Dremel not too far away, but I currently have no idea exactly how these traces run on the non-silk-screened side. Obviously, even if I could get the board out, tube holders cannot be removed, and there is little clearance in which to work.

Will let you know what I do - having read this thread, it is not really an option to leave it without the mod!!

UPDATE

Using a dentist's mirror to redirect a strong light behind the board, I can see through the PCB and make out the traces. It runs from 6, across to 3, then out of the tube holder and across to join the other pin 3. Looks to me like the hole should be drilled roughly between the numbers 5 and 6 in order to cut just the 3-6 trace, but leaving pin 3 connected to the trace running out of the tube holder.

Happy to mark out and drill on the basis of the light shining through the board - but I'm not doing ANYTHING till all this is confirmed.

Well, my impatience again, I reread the stuff, then went ahead and did it. Attached photo shows the hole (same for other tube) - I had to extend each hole slightly towards the 4 before the trace was finally gone, and confirmed that the two pin 3s were still connected, but each 3 and 6 were broken.

BTW the PCB is very easy to drill with a Dremel. I put very little pressure on because I was afraid I might lift the traces. You can see the tube holder through the hole (and yes I must clean up these solder joints  - and one seems to have cracked!?).

And it worked. And - first listen, it definitely sounds different! Will have to work through a few tracks before I can say how much - but at least I now have a before - after.

Go for it! Gave me a fright though - the sound after the mod was very detailed a bit "brittle" with a noticable restricted sounstage. Fortunately these effects settled after about 20 mins (what is it with ruddy capacitors?!?) ... and then ...

Bach, Brahms, Capercaille, Deacon Blue, K D Lang, Cake, King Crimson, Tchaikovsky, Deep Purple, Massive Attack, Paul Simon, Calexico, Elvis Costello, Zero 7, ... etc etc

Wow! "Gentlemen, this is no humbug!"

I don`t think I can afford to send mine back, but would love to do the mod myself for the Tori II, what pins do the caps need to go on and what size caps for the Tori II, thanks in advance for the help. Greg

Walter, thanks for the info and the link for the parts, all parts are on there way , should have this done very soon. Greg

All I can say is the audio world is in big trouble, I did the mod this morning on the TORI MKII, what a difference some caps make, best amp on the market.  It drives my Eminent Tech LFTIIIB`s Beautifully.