Link to directions for repairing solder pad?

[dnelsonfl]

Hi,

Anybody have any good links for clear directions on repairing a solder pad for a chip? A 4000D I recently aquired had a leaking battery. The battery damaged the chip at U177. The chip removed cleanly except for three legs. Those had suffered some effects of corrosion (green legs) and the pads now appear brownish instead of silver. (See pictures here and here, as it's hard to describe what I'm looking at). Thankfully that's the extent of the damage: everything else around the battery appears to be alright.

-David

[dnelsonfl]

@vic20owner,

Yeah, it does look that way now that I've found a magnifying glass. Do you think 30 guage wrapping wire would suffice? Radioshack carries it reasonably and is close by. And I can pick up the other supplies I'll need... except the replacement chip (74HCT174, SOIC).

Stateside, I've only found it at DigiKey so far (linky). Jameco and the others only had the 74HC174 in stock. It took me about an hour to find a site that would help me figure out what the difference is. the HCT is TTL-compatible. I'm not sure if the HC would work, though it is certainly cheaper. Better safe than sorry, I guess... it's going to cost me like $8 after shipping and handling fees to get two of these tiny little chips. {sigh}

In the end, is it better to have a working RTC clock and a few ugly wires on the motherboard, or no RTC and an authentic looking motherboard? I'd rather have it work. :inquisitive:

-David