Crackly volume control

Archived from groups: rec.audio.tech (More info?)

Hi,

I have an old Kenwood KA-3020se amplifier (it's about 10 years old). When I
turn the volume up or down I get a crackling and scraping sound from the
speakers. Is this dust inside the amplifier or an elecrical fault? Will I
have to have it opened up to be serviced or is there anything I can do? I
haven't had any problems with the amplifer before and it still sounds pretty
good.

If it is dust what would be the best way of cleaning it up?

Thanks.

Archived from groups: rec.audio.tech (More info?)

Caig cleaner and pro gold from radio shack

worked for my 71 marantz.....

"M Jones" <mjonesNOSPAM@west.com> wrote in message
news84v6c$k21$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com...
> Hi,
>
> I have an old Kenwood KA-3020se amplifier (it's about 10 years old). When
> I turn the volume up or down I get a crackling and scraping sound from the
> speakers. Is this dust inside the amplifier or an elecrical fault? Will
> I have to have it opened up to be serviced or is there anything I can do?
> I haven't had any problems with the amplifer before and it still sounds
> pretty good.
>
> If it is dust what would be the best way of cleaning it up?
>
> Thanks.
>
>
>

Archived from groups: rec.audio.tech (More info?)

Will silicon lubricant spray work? We have some of this where I work.


"Barry Mann" <zzzz@zzzz.zzz> wrote in message
news:42a68d49$1$avgroveq$mr2ice@wcnews.cyberonic.com...
> In <d84v6c$k21$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com>, on 06/07/05
> at 08:14 PM, "M Jones" <mjonesNOSPAM@west.com> said:
>
>>Hi,
>
>>I have an old Kenwood KA-3020se amplifier (it's about 10 years old).
>>When I turn the volume up or down I get a crackling and scraping
>>sound from the speakers. Is this dust inside the amplifier or an
>>elecrical fault? Will I have to have it opened up to be serviced or
>>is there anything I can do? I haven't had any problems with the
>>amplifer before and it still sounds pretty good.
>
>>If it is dust what would be the best way of cleaning it up?
>
> It's a standard mid life crisis for receivers. Typically the problem is
> worse just after you turn the unit on, but that's when you are most
> likely to change the volume and you won't notice that the control is
> quieter later.
>
> The problem is usually caused by surface contamination inside the
> volume control. Aging capacitors allow a small amount of leakage
> current to flow through the control and enhance the noise.
>
> More than 90% of the controls can be salvaged with a chemical
> treatment. Everyone has their favorite elixir. Years ago I used a
> product called "No Noise". It was very effective, but it was taken off
> the market, allegedly due to a problem with the EPA. Lately, I've been
> using Caig products. And I have a secret chemical I sometimes use on
> controls that don't respond to the Caig products, but I don't think it
> would be a great idea for amateurs to use it. (It must be used very
> sparingly ... amateurs always use several times as much chemical than
> is prudent ... a little goes a long way ... a lot causes big trouble.)
>
> The chemical treatment is not a permanent cure (not even replacing the
> control is permanent because the new control will fail in about 10
> years). I am accustomed to the chemical cure lasting two years or more
> and it can be redone if necessary. If the chemical cure lasts a few
> weeks, either the chemical was not properly used or the control is one
> of the 5-10% that don't respond well to the chemical.
>
> DO NOT USE WD-40. For some reason WD-40 is the magical cure for a
> certain segment. They seem to think that all problems can be cured by
> sticking the spray nozzle into a crack an bombing the inside of the
> unit. I've had units come in -- literally -- with puddles of the stuff
> inside. (and it didn't cure the problem)
>
> -----------------------------------------------------------
> spam: uce@ftc.gov
> wordgame:123(abc):<14 9 20 5 2 9 18 4 at 22 15 9 3 5 14 5 20 dot 3 15
> 13> (Barry Mann)
> [sorry about the puzzle, spammers are ruining my mailbox]
> -----------------------------------------------------------
>

Archived from groups: rec.audio.tech (More info?)

"Barry Mann" <zzzz@zzzz.zzz> wrote in message news:42a68d49$1
>
> DO NOT USE WD-40. For some reason WD-40 is the magical cure for a
> certain segment. They seem to think that all problems can be cured by
> sticking the spray nozzle into a crack an bombing the inside of the
> unit. I've had units come in -- literally -- with puddles of the stuff
> inside. (and it didn't cure the problem)

A squirtu of Caig cAILUBE SHOULD PUT IT RIGHT FOR ANOTHER 24 MONTHS AT
LEAST.

GEOFF

sorry about the capslock

Archived from groups: rec.audio.tech (More info?)

"M Jones" <NOSPAMmjones@NOSPAMwestwardservices.com> wrote in message
news86hib$rlf$1@nwrdmz02.dmz.ncs.ea.ibs-infra.bt.com...
> "Geoff Wood" <geoff@nospam-paf.co.nz> wrote in message
> news:42a6c827$1@clear.net.nz...
>>
>> "Barry Mann" <zzzz@zzzz.zzz> wrote in message news:42a68d49$1
>>>
>>> DO NOT USE WD-40. For some reason WD-40 is the magical cure for a
>>> certain segment. They seem to think that all problems can be cured
>>> by
>>> sticking the spray nozzle into a crack an bombing the inside of the
>>> unit. I've had units come in -- literally -- with puddles of the
>>> stuff
>>> inside. (and it didn't cure the problem)
>>
>> A squirtu of Caig cAILUBE SHOULD PUT IT RIGHT FOR ANOTHER 24 MONTHS
>> AT LEAST.
>>
>> GEOFF
>>
>> sorry about the capslock
>>
>
> Based on what people have told me I think i'll do that. I live in the
> UK and it's not a product i've heard of before. Do you know where I
> may get it from?

I thought that Caig originated in the UK and was imported over
here to The Colonies.

Archived from groups: rec.audio.tech (More info?)

"M Jones" <NOSPAMmjones@NOSPAMwestwardservices.com> wrote in message
news86hib$rlf$1@nwrdmz02.dmz.ncs.ea.ibs-infra.bt.com...
> "Geoff Wood" <geoff@nospam-paf.co.nz> wrote in message
> news:42a6c827$1@clear.net.nz...
>>
>> "Barry Mann" <zzzz@zzzz.zzz> wrote in message news:42a68d49$1
>>>
>>> DO NOT USE WD-40. For some reason WD-40 is the magical cure for a
>>> certain segment. They seem to think that all problems can be cured
>>> by
>>> sticking the spray nozzle into a crack an bombing the inside of the
>>> unit. I've had units come in -- literally -- with puddles of the
>>> stuff
>>> inside. (and it didn't cure the problem)
>>
>> A squirtu of Caig cAILUBE SHOULD PUT IT RIGHT FOR ANOTHER 24 MONTHS
>> AT LEAST.
>>
>> GEOFF
>>
>> sorry about the capslock
>>
>
> Based on what people have told me I think i'll do that. I live in the
> UK and it's not a product i've heard of before. Do you know where I
> may get it from?

Do you still have Cramolin? I seem to recall that it was the
original and came from the UK.

Archived from groups: rec.audio.tech (More info?)

On Wed, 8 Jun 2005 07:09:31 +0000 (UTC), "M Jones"
<NOSPAMmjones@NOSPAMwestwardservices.com> wrote:

> Will silicon lubricant spray work? We have some of this where I work.

No! Silicon destroy the volume pot!

Archived from groups: rec.audio.tech (More info?)

Kontakt 60 will work excellently for years. Kontakt 60 is especialy made for
cleaning, lubricating, protecting electric contact surfaces and solving
volume control problems. Website:
www.crceurope.com/csp/web/Countryp [...] =002100010
00136n5fbdw003014370972

Ronald Berger

"Geoff Wood" <geoff@nospam-paf.co.nz> schreef in bericht
news:42ad10fc$1@clear.net.nz...
>
> "Ken" <_ken_3_@telia.com> wrote in message
> news:20qna157brh00tuh1kerjr0b323ukmih43@4ax.com...
> > On Wed, 8 Jun 2005 07:09:31 +0000 (UTC), "M Jones"
> > <NOSPAMmjones@NOSPAMwestwardservices.com> wrote:
> >
> >> Will silicon lubricant spray work? We have some of this where I work.
> >
> > No! Silicon destroy the volume pot!
>
> Caig Cailube.
>
> geoff
>
>