Aussie Pinball Forums > Circuit Board Repair Guides
Leaky batteries - Pretty colour
beaky:
--- Quote from: Pop Bumper Pete on April 05, 2015, 07:13:05 AM ---
--- Quote from: beaky on April 05, 2015, 03:56:40 AM ---on 2 occasions i have had to cut and replace several inches of row / column wire because when you stripped the insulation back the conductor was green / white with corrosion
--- End quote ---
So, you can always get back to clean wire?
--- End quote ---
depends how long its been left for. one wire needed close to 30cms replaced but the rest didn't need much
studley67:
I too have seen early stern mpu200 boards with corosion all the way up to the header pins for switch/lamp matrix.No amount of remedial treatment was going to allow me to remove and replace those headers.The solder joints were fossilized.Plus i have had experienced noobs tell me"its not that bad,you can repair it"
Strangeways:
Love the close up photos. Corrosion is not always what can be seen. A lot of the times, corrosion has traveled along sections of traces that look fine until you sand away the surface. The "through holes" are also notorious for hiding corrosion. As a hobbyist, I enjoyed repairing these boards. As a business, it is not worth it. But "when" I have the time, I do like working on the really bad ones.
studley67:
agree,as a hobbyist it is a challenge and a rewarding,experience to get one of these 35+ yr old boards working.but economically it is not worth the time and effort,when a brand new replacement board could be had for just over $200.
studley67:
your thoughts KEN,i am sure you have seen your share of battery corrosion.
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