| If you lost traces, then you may be able to do the repair - but it depends on your soldering skills. Fortunately, PLCC packages have fairly large pins. Since this will be a permanent repair, you will need to make sure you have a good BIOS going into this. A socket, unfortunately, will not work as the thickness of the wire will make placement impossible. Keep this in mind if you haven't bought a replacement BIOS, or had BadFlash reflash your current BIOS.
To actually perform the repair, first identify which pads are missing. You may have pads that map to an unused pin, so check the datasheet for the part. If you did lift a pad that was used, then you will have to wire in a jumper. Depending on the trace size, this can be easy or hard, depending on the width of the trace. First, check and see if it directly connects to another component - then run a fine (22/24 AWG) wire between the pins. If the trace buries up into the board, you may be able to solder to the via. Unfortunately, PWB's are coated to prevent the traces from corroding, so you may have to lightly scrub the via out. If all else fails, *LIGHTLY* scrape the insulating layer off of the offending trace. You will need about 1/8" to 1/4" of trace exposed. Tin the wire, not the trace, and then tack solder the wire to the trace. Repeat on the PLCC pin. It is ugly, but I've seen *shipping* boards at work with as many as 50 of these kinds of jumpers on them. (usually due to a drafting screwup...) This will work well if the number of pads lifted is low, or the pads are far apart.
Once you are done, assuming you are successful, boot the system and make sure it's working. If it boots, and you are happy with the work, get a bottle of superglue and tack down all of those wires. Assuming your solder joints are solid, the machine should be fine. When I modified my CF slot for 5v operation, I inadvertently cut the WE line. I ran a jumper between the 3.3V Vcc line and the WE jumper using a short piece of wire-wrap wire and the machine has run fine. | |
