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 Whats the best circuit board cleaner for Galvanic corrosion plus white mould?
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 Return to top of page · Post #: 1 · Written at 11:05:56 PM on 26 January 2017.
Vintage Pete's avatar
 Location: Albury, NSW
 Member since 1 May 2016
 Member #: 1919
 Postcount: 1993

Hello everybody.
I bought a PYE TS6 stereogram today.
About 67 68 model.
So I brought it home ,radio works, turntable works, record loader works , auto works .
All good, but as usual only sound coming out of one channel,, Arrrrrr this problem haunts me and follows me with all that I buy. Its Worse than my ex wife.
Anyway I stuck my head in the chassis to check the wiring and look at the Amp, but before I had a chance to look at the Amp etc etc ,,,I noticed what we call in my trade Galvanic corrosion between the brass and Alloy plate in the Tuner. I Also notice white mould build up in the chassis, particularly around the Aerial.
So before I go blaming the Amp for the channel problem I want to clean up the complete circuit board in case its just dirty mould ,flux and galvanic,,,causing the channel problem as well.

So whats the best circuit cleaner to use ?
In the past I have gone to Jaycar and they only seem to carry their own type brand and I was not very impressed with the job it did in the past.
So which one and where do I buy it?
Please give me your opinion, Thank you pete


 
 Return to top of page · Post #: 2 · Written at 12:28:39 PM on 29 January 2017.
Little Nipper's Gravatar
 Location: Australia, SA
 Member since 21 December 2011
 Member #: 1047
 Postcount: 85

We used to use Freon to clean circuitboards, until the ozone hole scare when it was banned.

CRC's CO cleaner does a reasonable job but be aware it is flammable. It may contain ether.

CRC also make motor winding varnish, the clear one is what most circuitboards are coated with these days, and what should be re-applied after a repair.

Lanotec make products from lanolin (in sheeps wool) if you want a corrosion resistant coating which has very good electrical insulating properties. Some products stay tacky and others set harder. Their A type grease is good for just about everything too, but it turns black when it is worked. We use these products in the food industry. I wonder if their citrus cleaner is any good for circuitboards?


 
 Return to top of page · Post #: 3 · Written at 6:12:51 PM on 29 January 2017.
Redxm's avatar
 Location: Tamworth, NSW
 Member since 6 April 2012
 Member #: 1126
 Postcount: 444

I use this:-

http://au.element14.com/electrolube/uls400d/ultrasolve-400ml-aerosol/dp/298207

Can also get it from WES/Wagner.

Ben


 
 Return to top of page · Post #: 4 · Written at 6:25:36 PM on 29 January 2017.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6005

A mate of mine who works on old PCBs every day uses truckloads of this:

http://au.element14.com/electrolube/flu400db/fluxclene-can-aero-brush-400ml/dp/725663

Electrolube makes a range of solvent type cleaning products.


 
 Return to top of page · Post #: 5 · Written at 9:08:04 PM on 29 January 2017.
Vintage Pete's avatar
 Location: Albury, NSW
 Member since 1 May 2016
 Member #: 1919
 Postcount: 1993

Hi all, Thank you those are all good leads and tomorrow I will chase it up, I dont normally even look at PCB"s , as I like the older stuff but I'm hoping it just needs a good clean up, thanks again ,,pete

Update,,,i can get it at Brookvale,,nice and close thanks again,,pete


 
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