Little Dot Tube Amps: Vacuum Tube Rolling Guide
Nov 20, 2020 at 6:52 PM Post #12,346 of 12,832

MIKELAP

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Sorry for late reply, here some pics to the point I stopped. The little screw inside the pot is removed but still the metal pot does not come out. What to do now?
Loosen the scew for the knob ,remove knob you will see this hex nut this is what is preventing you from removing the pot disconnect plug and remove it .be extra careful with the pot wires they are very fragile
002.JPG
 

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Nov 24, 2020 at 3:05 AM Post #12,349 of 12,832

lupoal

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thank you :)
I forgot there was a review about that in the first page, well I already have the a couple of CV4014 (and two couples recently bought as backup)... so having already the EF91 that seems to be one of the best options I think I will put my money in something different... I will look for Mullard CV401
 
Nov 24, 2020 at 3:24 AM Post #12,350 of 12,832

Whelkie D

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thank you :)
I forgot there was a review about that in the first page, well I already have the a couple of CV4014 (and two couples recently bought as backup)... so having already the EF91 that seems to be one of the best options I think I will put my money in something different... I will look for Mullard CV401
I also got some Brimar EF92. They sound much more "rounded" than the EF91s so if you manage to find some, I would also recommend those.
 
Nov 24, 2020 at 6:59 AM Post #12,351 of 12,832

lupoal

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in the mean time, few minutes ago, I've received the two C3g Siemens (lightly used.. hopefully) I've ordered two weeks ago (adatpters from China are at custom office here i Italy now.. so few day I hope) ... because of the shape they have I can't use the small cup supplied with Deoxid Gold to clean the pins... how do C3g owners proceed in this case? suggestions and/or tricks?
 
Nov 24, 2020 at 9:23 AM Post #12,353 of 12,832

lupoal

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so, the two C3g... one is perfect (at least looks perfect... I still have to turn it ON), the other one... here are some pictures, what do you think about?
 

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Nov 24, 2020 at 9:38 AM Post #12,354 of 12,832

MIKELAP

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in the mean time, few minutes ago, I've received the two C3g Siemens (lightly used.. hopefully) I've ordered two weeks ago (adatpters from China are at custom office here i Italy now.. so few day I hope) ... because of the shape they have I can't use the small cup supplied with Deoxid Gold to clean the pins... how do C3g owners proceed in this case? suggestions and/or tricks?
To clean pins i always use a fine grit sandpaper it will remove all the grime .One piece of advice you probably saw this before if you read the thread .Ounce you insert C3G tubes in there adapters i would leave them in there because they are very fragile ,also dont wiggle them when inserting them and like i said it is best to leave them in
 
Nov 24, 2020 at 10:02 AM Post #12,355 of 12,832

lupoal

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yes I remember your suggestions... I'm little bit scared by that (looks like) deep corrosion, do you think it could has caused serious damage to the pins (mechanical and electrical)? what your experience about? in some point it looks like gold is not there any more :confounded:
 
Nov 24, 2020 at 10:18 AM Post #12,356 of 12,832

MIKELAP

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yes I remember your suggestions... I'm little bit scared by that (looks like) deep corrosion, do you think it could has caused serious damage to the pins (mechanical and electrical)? what your experience about? in some point it looks like gold is not there any more :confounded:
Seller tested them ? i would clean the pins should be ok .
 
Nov 24, 2020 at 10:18 AM Post #12,357 of 12,832

tubebuyer2020

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... because of the shape they have I can't use the small cup supplied with Deoxid Gold to clean the pins... how do C3g owners proceed in this case? suggestions and/or tricks?

Can you not use a pen applicator? http://store.caig.com/s.nl/it.A/id.1554/.f

Though you might need the other pen as well: "if the surface looks dirty/oxidized, preclean with DeoxIT D-Series contact cleaner".
 
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Nov 24, 2020 at 10:46 AM Post #12,359 of 12,832

lupoal

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Can you not use a pen applicator? http://store.caig.com/s.nl/it.A/id.1554/.f

Though you might need the other pen as well: "if the surface looks dirty/oxidized, preclean with DeoxIT D-Series contact cleaner".

some time ago I bought this kit ... I will apply D25 with a little brush, maybe more then one time removing it between the applications, and then at the end protect the pins with Gold GXMD ... normally, with smaller tubes, I left them inside the liquid overnight and then clean and protect but with these C3g I would need a special cup and one liter of liquid (and it is extremely expensive!)

I will put pictures here about results tomorrow :wink:
 
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Nov 24, 2020 at 11:46 AM Post #12,360 of 12,832

gibosi

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some time ago I bought this kit ... I will apply D25 with a little brush, maybe more then one time removing it between the applications, and then at the end protect the pins with Gold GXMD ... normally, with smaller tubes, I left them inside the liquid overnight and then clean and protect but with these C3g I would need a special cup and one liter of liquid (and it is extremely expensive!)

I will put pictures here about results tomorrow :wink:

I would clean them mechanically first, and then use the chemical.
 

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