We sent him a GB 2 PCB at cost, at his request.
It should have the fix implemented by you, I hope.
Patrick
It should have the fix implemented by you, I hope.
Patrick
Thanks Alexis.
I contacted WK just recently for updated PCBs, I believe this version (R4) does not need the mod.
I contacted WK just recently for updated PCBs, I believe this version (R4) does not need the mod.
Oh, I'm sorry, I was not aware that a new set of boards had been ordered. In that case then yes r4 should have the fix. I will recheck the gerbers I sent when I get into university tomorrow.
Alexis, you’re not sounding confident. Correct me if I’m wrong, I was under the impression the revision was all about the mod fix? That and an update to the Xen logo on the silkscreen 😉
Should I be waiting for your confirmation with the gerbers?
Should I be waiting for your confirmation with the gerbers?
No, I sent a set of files with the fix to EUVL. I remember doing that, I am just surprised as I did not know that boards had been made with those changes. I am confident that the pcb has the fix. Sorry. For worrying you.
Now, I'm somewhat confused:
This offer of yours in the build thread (#585) dated 19th May 2013, Alexis, apparently never took place.
I've sent you a PM then, but I don't recall that I ever received a corrected PCB. I have just contacted WK by PM for a corrected PCB.
But generally, shouldn't this discussion be continued in the build thread?
http://www.diyaudio.com/forums/pass-labs/208880-f5x-euvl-approach-build-thread.html
This offer of yours in the build thread (#585) dated 19th May 2013, Alexis, apparently never took place.
I've sent you a PM then, but I don't recall that I ever received a corrected PCB. I have just contacted WK by PM for a corrected PCB.
But generally, shouldn't this discussion be continued in the build thread?
http://www.diyaudio.com/forums/pass-labs/208880-f5x-euvl-approach-build-thread.html
I cannot understand why it is too much work to make a small PCB repair.
Nic did it, Greg did it, without an issues.
Patrick
Nic did it, Greg did it, without an issues.
Patrick
We only have 6 left, I was told.
If there are more demand then we'll have to make new and send all in one go to save work for WK.
Patrick
If there are more demand then we'll have to make new and send all in one go to save work for WK.
Patrick
I have been dealing with serious medical issues, I am only now starting to get on top of them. I have not been doing much of anything since that time. I would rather not have to talk about them, and am sorry about the delay. If euvl arranges for PCBs to be made for those who want them I will pay the invoice, I cannot do much more than that at the moment.
Thank you very much, Patrick.
I have set up a list showing interest here:
http://www.diyaudio.com/forums/grou...up-buys-related-euvls-f5x-34.html#post3665184
Alexis, I am very sorry to learn of yout medical problems and I hope you feel better now. It us very kind of you that you want to pay for the boards, but I shall pay for it by myself.
The repair isn't too hard to implement, but it does take some care. You just need a sharp knife (like an xacto), a magnifying glass, a very small gauge wire and some patience. Go slow when carefully scraping off the epoxy over the trace. Don't use a dull big knife for this process.
To make the new connection, I used a very thin gauge lead from a low wattage resistor. I carefully bent the lead to make sure that it laid flat on the board and did not create any accidental bridges. I then tinned the exposed traces. Lastly, I laid the wire on top of the exposed traces, flooded it with liquid flux and heated the connection with my iron (which had a little bit of solder on the tip as well). Seem to do the trick. 🙂
Just be careful not to push on the wire too hard after soldering or you might pull the trace out of the board. The big thing is to just take your time, and go slow. I'd do the fix before you populate any of the board. That way if something does go wrong, you can try to order a new board with the fix implemented.
Give it a shot. Knowing how to do this type of repair is a good skill to have in your back pocket. 😀
I think every member of the first batch can have his own subjective opinion for wanting a perfect board without any (layout) issues.
I would like to get 2 if possible and I have no problem at all by paying for them by myself.
I would like to get 2 if possible and I have no problem at all by paying for them by myself.
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Those who must have the corrected PCB can put their names down here :
http://www.diyaudio.com/forums/grou...oup-buys-related-euvls-f5x-7.html#post3665184
Patrick
http://www.diyaudio.com/forums/grou...oup-buys-related-euvls-f5x-7.html#post3665184
Patrick
Hi,
I know I read some time ago somewhere on this thread or another one by your team with transconductance curves for matched 2JS74 and 2SK170 that illustrated how about 5 ohms of resistance on one of these devices caused the very similar curves to become almost identical. Searches within diyaudio.com and using google have not led me back to that page that I know exists. Might someone have the url for that particular post? Thanks.
http://www.diyaudio.com/forums/pass-labs/208880-f5x-euvl-approach-build-thread-2.html#post2947484
🙂
Any other EUVL F5X subscribers with sumr transformers having hum related issues? 🙁
🙂
Any other EUVL F5X subscribers with sumr transformers having hum related issues? 🙁