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[Mark Dawson]

Hi all

We have an old DDA Q-Series in the ranks.  While still being a very usefull asset, it has dusty faders that scratch a bit on first use.  This nomally clears up a lot after a few full travels.
It is fitted with P&G faders, so it's cost prohibitive to simply replace them.
Can someone please tell me the best way to go about cleaning these?

Much Thanks

[Jens Palm Bacher]

Hi all

We have an old DDA Q-Series in the ranks.  While still being a very usefull asset, it has dusty faders that scratch a bit on first use.  This nomally clears up a lot after a few full travels.
It is fitted with P&G faders, so it's cost prohibitive to simply replace them.
Can someone please tell me the best way to go about cleaning these?

Much Thanks

http://www.coopersound.com/Application/cleanpg.htm
(and the first hit on google)

[Mike Caldwell]

It may be as much to do with DC voltage leakage from old caps than actual dirt in the faders. After the board is on a while it settles down and leakage is not as apparent on the faders.

Just a thought

[Chris Carpenter]

Hi all

We have an old DDA Q-Series in the ranks.  While still being a very usefull asset, it has dusty faders that scratch a bit on first use.  This nomally clears up a lot after a few full travels.
It is fitted with P&G faders, so it's cost prohibitive to simply replace them.
Can someone please tell me the best way to go about cleaning these?

Much Thanks

I think the short answer is to grab some faderlube f5 from guitar center, and follow the directions on the back of the can.

[Ian Stuart]

Pour a little methylated spirts down the faders. you can use a dropper if you like. carefully but rapidly move all faders up and down to break up the grit and let this dry for a minute or two.

Electronics are not affected by this because small amounts of spirits evaporates within seconds, place a drop on a surface and watch it if you haven't seen it before. Plus, you can make awesome cocktails with it!

If it's the caps you can still replace them. If they are really old or you don't have the right values on hand, you can add them in series to make up the right values. wiring caps in parallel does something else too but I can't remember what this is at the moment.

If you feel like experimenting with capacitors you can change the values completely, for example, the values in your EQ determine the upper and lower ranges of the frequency response. Just don't fuck with the powersupply ones!

[Jerry Turnbow]

Pour a little methylated spirts down the faders. you can use a dropper if you like. carefully but rapidly move all faders up and down to break up the grit and let this dry for a minute or two.

Electronics are not affected by this because small amounts of spirits evaporates within seconds, place a drop on a surface and watch it if you haven't seen it before. Plus, you can make awesome cocktails with it!

If it's the caps you can still replace them. If they are really old or you don't have the right values on hand, you can add them in series to make up the right values. wiring caps in parallel does something else too but I can't remember what this is at the moment.

If you feel like experimenting with capacitors you can change the values completely, for example, the values in your EQ determine the upper and lower ranges of the frequency response. Just don't fuck with the powersupply ones!

Actually, combining capacitors is the exact opposite of resistors.  Putting them causes the values to be combined.

[Bennett Prescott]

I like how every response to this thread has different advice.

[Mark Dawson]

I like how every response to this thread has different advice.

Yeah, that's what I'd gotten both googling and youtube etc.   Hence why I posted it here to get a definitive answer.

With regard to meths, wouldn't that break down the protective lube hence I'd have to relube it?  And as far as cocktails go, If you strain the meths through a piece of bread it removes the purple colouring 

[Jens Palm Bacher]

Yeah, that's what I'd gotten both googling and youtube etc.   Hence why I posted it here to get a definitive answer.

With regard to meths, wouldn't that break down the protective lube hence I'd have to relube it?  And as far as cocktails go, If you strain the meths through a piece of bread it removes the purple colouring 

Please notice that the guide in the link I posted is actually written by Neal Handler from P&G.

[Ian Stuart]

Actually, combining capacitors is the exact opposite of resistors.  Putting them causes the values to be combined.

My bad!! 

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