Battery liquid, worst you could get on the boards. In my opinion there is only one thing to do: skip all attempts to save the boards! You can never be sure there isn't some residue left, that will start corrosion after some time.
Sorry for giving a pessimistic answer...others may be mor positive, let's see and listen.

How is life in Goa these days, Anil? Are you still working 12hs a day?

Inge

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Anil kher
Sent: den 27 augusti 2008 18:43
To: [log in to unmask]
Subject: [TN] what damage can a battery leakage do on a TTL/CMOS controller card 1990 vintage

Hi all



Need advise. This has happenned twice in the last 2 months. The battery leaked all over the card (S-M - CNC 45 card no. 45.01.02.3) The m/cs did not start the next day.



If the card is  powered after a few years of storage the battery starts leaking and within a few days it is all over the PCB.



We removed the chips and cleaned in Hot water / air agitn and againa nd again. Baked bare card and reloaded chips. NADA. Solvent extarct of bare PCB all perfect.



Advise if we should change all chips - some TTL, some cmos, memory,  eproms, etc.





Anil



Micro Interconnexion Pvt. Ltd

D3-12 A, Corlim Ind. Estate

Corlim, ILHAS, GOA

INDIA - 403110

Tel: +91-832-2284337

Fax: +91-832-2284209

alt. E-mail: [log in to unmask]



LEADERS IN GOLD PLATED PCBs






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