Joe: A couple of ways to go depending on what equipment you have available.

1. You can use a one component UV curable soldermask, cured with a high
intensity UV light source.

2. You can use a two part room temperature cure epoxy.

3. You can use a standard thermal cure soldermask and use a heat gun for
localized curing.

All these materials are usually thinned and applied with a small brush.

One note of caution, the cured properties of these, in particular the
electrical may not be as good as the original soldermask. However if not in
a super critical area it probably is not an issue.



Michael Barmuta

Staff Engineer

Fluke Corp.

Everett WA

425-446-6076

-----Original Message-----
From: Macko, Joe @ IEC [mailto:[log in to unmask]]
Sent: Wednesday, January 08, 2003 1:08 PM
To: [log in to unmask]
Subject: [TN] solder mask touch-up on a populated board


Technets,

Periodically we have to touch-up damaged solder mask on a populated board.
The solder mask is green LPI.

What is commonly used to touch-up damaged green colored, LPI solder mask on
populated boards?  I do not want to subject the board to any temperature
over 125 C to cure.   thanks

joe

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