Great video, thank you! I know nothing about electronics but I believe there may be a grounding issue as I sometimes get a tiny shock when flicking the toggle switches on the front of the X7. It also happened once on my pre-amp volume knob when connected to the X7, but i've never had that issue before the X7 arrived. Weird!
You might need to clean the paint off the connection point from the safety ground to the chassis to ensure a solid connection. That said, if you are talking about a static electric type shock, it should happen if the amp is solidly grounded.
@SkunkieDesignsElectronics Hi Stephe, I actualy try to fix an issue on my Cayin cs55, for that i need to change the bias pot it's a 22k , it's really hard to find or it's 40euros piece; i would like to doit like you and put a 10k pot and resistors but it's on tiny bord printed on each face , to dificult for me , so i would like to know if it's possible to put a potentiometre close to 22k like 20,25 or 50k is it a problem? thanks for all your pationating video
@@SkunkieDesignsElectronics Thank you so much for your anwser , for my repair i only have 2 solution due tu the diameter of the potentiometer so i can put a 20k or a 50k, wich one it's a better option, originaly it was a 22k? sorry for those kind of non electrician question
Just want to check on this: Throughout the video you talk about adding 5k and *18k* resistors to the 10k pots make them work, however once or twice you mentioned adding 5k and *8k* resistors to the 10k pots which makes more sense to me since the originals were 22k. 18k is also shown in the schematic you made. Which is correct?
OK the original used a 22K pot + a 10K resistor in series on the ground side = 32K. So I added a 5K resistor to the negative supply side of the pot and added 8K to the ground resistor. 5K + a 10K pot + 18K on the ground side = 33K. Does that make sense?
@@SkunkieDesignsElectronics Yes, definitely makes sense. I missed that part about the 10k resistor that was already there. Is that on the R8 as well? I looked back and I realize now it was on the R8 thread you talked about adding 8k of resistance; not necessarily an 8k resistor.
Thanks 👍
Nice shiny solders ! Great job !
Beautiful work Stephe!
Very clean and nice job ......!
and the icing on top, .........better reliability and more precise as well as ceasier adjustment .
As always, nice work!
Lovely job, Stephe
Great video, thank you! I know nothing about electronics but I believe there may be a grounding issue as I sometimes get a tiny shock when flicking the toggle switches on the front of the X7. It also happened once on my pre-amp volume knob when connected to the X7, but i've never had that issue before the X7 arrived. Weird!
You might need to clean the paint off the connection point from the safety ground to the chassis to ensure a solid connection. That said, if you are talking about a static electric type shock, it should happen if the amp is solidly grounded.
Does this new configuration reduce the range of adjustment?
No, and the range can be easily tweaked with the resistors on the board if needed for a specific tube.
@SkunkieDesignsElectronics Hi Stephe, I actualy try to fix an issue on my Cayin cs55, for that i need to change the bias pot it's a 22k , it's really hard to find or it's 40euros piece; i would like to doit like you and put a 10k pot and resistors but it's on tiny bord printed on each face , to dificult for me , so i would like to know if it's possible to put a potentiometre close to 22k like 20,25 or 50k is it a problem?
thanks for all your pationating video
Shouldn't be a problem. It's just a voltage divider.
@@SkunkieDesignsElectronics Thank you so much for your anwser , for my repair i only have 2 solution due tu the diameter of the potentiometer so i can put a 20k or a 50k, wich one it's a better option, originaly it was a 22k?
sorry for those kind of non electrician question
20K
Just want to check on this: Throughout the video you talk about adding 5k and *18k* resistors to the 10k pots make them work, however once or twice you mentioned adding 5k and *8k* resistors to the 10k pots which makes more sense to me since the originals were 22k. 18k is also shown in the schematic you made. Which is correct?
OK the original used a 22K pot + a 10K resistor in series on the ground side = 32K. So I added a 5K resistor to the negative supply side of the pot and added 8K to the ground resistor. 5K + a 10K pot + 18K on the ground side = 33K. Does that make sense?
@@SkunkieDesignsElectronics Yes, definitely makes sense. I missed that part about the 10k resistor that was already there. Is that on the R8 as well? I looked back and I realize now it was on the R8 thread you talked about adding 8k of resistance; not necessarily an 8k resistor.
@@SkunkieDesignsElectronicsHi Stephe, I have the parts to do this mod, just to be clear, 8K should read 18K, just a typo Error 👍
Done this mod today, all works ok, thanks for all the upgrade info on the X7 .