Cleaning PCB - Alcohol

[Steven G.]

Just wondering what is the best type of Alcohol to clean a PCB with
components on it?

And any tips on the cleaning procedure.

It is a mobile phone board with a bit of Corrosion on it.

Thanks.

 

[Rod Speed]

Steven G <georgste@NOSPAMgeocities.com> wrote in message
news:wxxZb.68828$Wa.16915@news-server.bigpond.net.au...

Just wondering what is the best type of Alcohol
to clean a PCB with components on it?

And any tips on the cleaning procedure.

It is a mobile phone board with a bit of Corrosion on it.

Alcohol isnt much use for corrosion.

Do you know what caused the corrosion ?

 

[Phil Allison]

"Rod Speed" <rod_speed@yahoo.com>>

Steven G <georgste@NOSPAMgeocities.com> u...

Just wondering what is the best type of Alcohol
to clean a PCB with components on it?

And any tips on the cleaning procedure.

It is a mobile phone board with a bit of Corrosion on it.

Alcohol isnt much use for corrosion.

Do you know what caused the corrosion ?

** The last mobile phone I saw had been in a woman's handbag - along with
a tub of yogurt that leaked. Of course, she made no attempt to clean it or
thought to remove the battery and it was weeks before she gave it to me.

It was ruined by the resulting corrosion.

A lacquer coating over the solder pads and ICs on the PCB would pretty
much prevent this.




........... Phil

 

[Zebulon Blah]

On Sat, 21 Feb 2004 12:38:52 +1100, "Rod Speed" <rod_speed@yahoo.com> wrote:

Steven G <georgste@NOSPAMgeocities.com> wrote in message
news:wxxZb.68828$Wa.16915@news-server.bigpond.net.au...

Just wondering what is the best type of Alcohol
to clean a PCB with components on it?

And any tips on the cleaning procedure.

If the corrosion is only on the copper side, Ajax sometimes works well.

Be sure to flush off the Ajax and then dry the board with a hair drier.

 

[Steven G.]

Don't know, but probably just water. It was a 2nd hand phone, so it has been
there for a while.

It seems some of it maybe under one of the BGA chips, so an alcohol bath
maybe enough to loosen it up.

I have removed all visible signs of the corrosion.


"Rod Speed" <rod_speed@yahoo.com> wrote in message
news:c16crb$1f8fir$1@ID-69072.news.uni-berlin.de...

Steven G <georgste@NOSPAMgeocities.com> wrote in message
news:wxxZb.68828$Wa.16915@news-server.bigpond.net.au...

Just wondering what is the best type of Alcohol
to clean a PCB with components on it?

And any tips on the cleaning procedure.

It is a mobile phone board with a bit of Corrosion on it.

Alcohol isnt much use for corrosion.

Do you know what caused the corrosion ?

 

[Phil Allison]

"Steven G." <georgste@NOSPAMgeocities.com>
server.bigpond.net.au...

** Top posting is bad manners !!!

Don't know, but probably just water.

** Was it left out in the rain ?

Dropped in the dunny ?

Fell in a chlorinated pool ?

Chances are not high that phone will ever work again if the water was not
perfectly clean. The combination of a dirty or conductive liquid and the DC
power from the battery eats fine PCB tracks in seconds.





.............. Phil

 

[Steven G.]

Looks like it was just some rain or something. The phone Does boot and
displays the 'Contact service message'.

What I would really like to know, is the type of Alcohol to use.



"Phil Allison" <philallison@optusnet.com.au> wrote in message
news:4036c2fb$0$19707$afc38c87@news.optusnet.com.au...

"Steven G." <georgste@NOSPAMgeocities.com
server.bigpond.net.au...

** Top posting is bad manners !!!


Don't know, but probably just water.

** Was it left out in the rain ?

Dropped in the dunny ?

Fell in a chlorinated pool ?

Chances are not high that phone will ever work again if the water was not
perfectly clean. The combination of a dirty or conductive liquid and the
DC
power from the battery eats fine PCB tracks in seconds.





............. Phil

 

[Phil Allison]

"Steven G." <georgste@NOSPAMgeocities.com



** 1. Stop fucking top posting.

2. Alcohol is not a corrosion remover - it is only a solvent.





......... Phil

 

[John Crighton]

On Sat, 21 Feb 2004 00:22:52 GMT, "Steven G."
<georgste@NOSPAMgeocities.com> wrote:

Just wondering what is the best type of Alcohol to clean a PCB with
components on it?

And any tips on the cleaning procedure.

It is a mobile phone board with a bit of Corrosion on it.

Thanks.


Hello Steven,

I rescued some HF and VHF radio equipment that had been
dunked in salt water for a short time. The gear was given a
bath with lots of fresh running water then the boards were
removed so that a water hose could be applied to both
sides of the boards. The equipment was sprayed many
times with WD40, I used a toothbrush, tissues and rags.
A small portable TV set which also suffered from the
dunking was given the same treatment and worked when
reassembled. It was still working 12 months later.
With a mobile phone, working at much higher frequencies
and with tiny parts you might not be as lucky as I was but
you have nothing to loose and everything to gain.
Maybe you could wash the WD40 off with something
else later if the WD40 was causing some detuning effect.
With the equipment I cleaned up, I left a light coating
of WD40 on the gear.
Regards,
John Crighton
Hornsby

 

[Steven G.]

"John Crighton" <john_c@tpg.com.au> wrote in message
news:4036eb14.23624085@News.individual.net...

On Sat, 21 Feb 2004 00:22:52 GMT, "Steven G."
georgste@NOSPAMgeocities.com> wrote:

Just wondering what is the best type of Alcohol to clean a PCB with
components on it?

And any tips on the cleaning procedure.

It is a mobile phone board with a bit of Corrosion on it.

Thanks.


Hello Steven,
I rescued some HF and VHF radio equipment that had been
dunked in salt water for a short time. The gear was given a
bath with lots of fresh running water then the boards were
removed so that a water hose could be applied to both
sides of the boards. The equipment was sprayed many
times with WD40, I used a toothbrush, tissues and rags.
A small portable TV set which also suffered from the
dunking was given the same treatment and worked when
reassembled. It was still working 12 months later.
With a mobile phone, working at much higher frequencies
and with tiny parts you might not be as lucky as I was but
you have nothing to loose and everything to gain.
Maybe you could wash the WD40 off with something
else later if the WD40 was causing some detuning effect.
With the equipment I cleaned up, I left a light coating
of WD40 on the gear.
Regards,
John Crighton
Hornsby

Thanks. It's nice to get a straight answer.

The RF Section doesn't seem to be effected, so maybe I'll just stay away
from there.

Will give water a try. Thanks.

 

[Phil Allison]

"Steven G." <georgste@NOSPAMgeocities.com>

Thanks. It's nice to get a straight answer.

** What ??????

There was no answer at all to your idiot "which alcohol ?" question.

The scenario John described was completely different to the one in your
question.






............ Phil

 

[Rod Speed]

"Steven G." <georgste@NOSPAMgeocities.com> wrote in message news:mpBZb.69205$Wa.32240@news-server.bigpond.net.au...

Looks like it was just some rain or something. The phone Does boot and
displays the 'Contact service message'.

What I would really like to know, is the type of Alcohol to use.

Like I said, alcohol isnt any real use for corrosion.

"Phil Allison" <philallison@optusnet.com.au> wrote in message
news:4036c2fb$0$19707$afc38c87@news.optusnet.com.au...

"Steven G." <georgste@NOSPAMgeocities.com
server.bigpond.net.au...

** Top posting is bad manners !!!


Don't know, but probably just water.

** Was it left out in the rain ?

Dropped in the dunny ?

Fell in a chlorinated pool ?

Chances are not high that phone will ever work again if the water was not
perfectly clean. The combination of a dirty or conductive liquid and the
DC
power from the battery eats fine PCB tracks in seconds.





............. Phil

 

[Chas]

"Steven G." <georgste@NOSPAMgeocities.com> wrote in message
news:wxxZb.68828$Wa.16915@news-server.bigpond.net.au...

Just wondering what is the best type of Alcohol to clean a PCB with
components on it?

And any tips on the cleaning procedure.

It is a mobile phone board with a bit of Corrosion on it.

Thanks.

Isopropyl alcohol, but it will not dissolve the corrosion. You will need to
scrub with a brush or cotton bud.

Regards, Chas.


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[Allan]

"Phil Allison" <philallison@optusnet.com.au> wrote in message
news:4036c2fb$0$19707$afc38c87@news.optusnet.com.au...

"Steven G." <georgste@NOSPAMgeocities.com
server.bigpond.net.au...

** Top posting is bad manners !!!

I wondered why some people Posted at the bottom,
It is a pain having to go to the bottom of a post, that you have already
read, to find a reply..

SO lets all start a new fad, POST ON TOP..!!

:>

(Is that ok to use a smiley face, or is that bad too....)
Allan

 

[Brian Goldsmith]

"Allan" wrote

** Top posting is bad manners !!!

I wondered why some people Posted at the bottom,



***** Correction,MOST people post at the bottom!

Brian Goldsmith.

 

[Rob]

I think it's a peer (continued below, please see bottom post)


"Brian Goldsmith" <brian.goldsmith@nospamecho1.com.au> wrote in message
newsUk_b.72476$Wa.61820@news-server.bigpond.net.au...

"Allan" wrote


** Top posting is bad manners !!!



I wondered why some people Posted at the bottom,



***** Correction,MOST people post at the bottom!

Brian Goldsmith.

(continued from top post) pressure thing.
Apparently most people voted against daylight saving too.

regards

 

[Brian Goldsmith]

"Rob" wrote

Correction,MOST people post at the bottom!

Apparently most people voted against daylight saving too.

***Apparently you are wrong,there was never a referendum in Victoria
about daylight saving!

Brian Goldsmith.

 

[TonyP]

"Brian Goldsmith" <brian.goldsmith@nospamecho1.com.au> wrote in message
news:zdt_b.73204$Wa.11098@news-server.bigpond.net.au...

Correction,MOST people post at the bottom!

Actually most people post inserts *throughout* the original post.

Apparently most people voted against daylight saving too.

There was a vote, which state?

***Apparently you are wrong,there was never a referendum in Victoria
about daylight saving!

And for once I didn't mind

TonyP.

 

[budgie]

On Tue, 24 Feb 2004 13:32:52 +1100, "TonyP" <TonyP@optus.net.com.au> wrote:

"Brian Goldsmith" <brian.goldsmith@nospamecho1.com.au> wrote in message
news:zdt_b.73204$Wa.11098@news-server.bigpond.net.au...
Correction,MOST people post at the bottom!

Actually most people post inserts *throughout* the original post.

Apparently most people voted against daylight saving too.

There was a vote, which state?

WA for one - although we usually count for only a tad more than Tasmania, and
they often get missed on the map ....

***Apparently you are wrong,there was never a referendum in Victoria
about daylight saving!

And for once I didn't mind

TonyP.

 

[Richard Freeman]

"Allan" <allanaws@hotmail.com> wrote in message
news:4039d576$0$22502$5a62ac22@freenews.iinet.net.au...

"Phil Allison" <philallison@optusnet.com.au> wrote in message
news:4036c2fb$0$19707$afc38c87@news.optusnet.com.au...

"Steven G." <georgste@NOSPAMgeocities.com
server.bigpond.net.au...

** Top posting is bad manners !!!

And often an indication of a liar and a Charlatan.

I wondered why some people Posted at the bottom,
It is a pain having to go to the bottom of a post, that you have already
read, to find a reply..

It all depends on what you wish to achieve Bottom posting is useful because
it helps keep your Reply in context that is someone else can see which part
of a previous post you are responding to ( as in this case I am responding
to the bit you wrote above)

SO lets all start a new fad, POST ON TOP..!!

It might sound like a good idea but Top posting is often what liars and
charlatans (scum like w_tom) resort to so that they can misquote people

(Is that ok to use a smiley face, or is that bad too....)

Bad, Bad, Bad, Bad .......;-)

Regards
Richard Freeman