On Jun 30, 2012, at 3:51 AM, Arthur Rosen wrote: > Thanks Jason. Sounds like a logical thing to do but it is going to be very > tedious. Any suggestions as to which capacitors I should start with or > should I just do them all. Is there any way to get a layout plan of the > motherboard so that I could have the proper caps on hand as I remove the old > ones?
The leaky capacitors will be small metal cans sitting on a black or brown plastic base on the logic board. Their values are marked on the tops is three rows. The important information is on two rows. For instance, you may see one that says: "D4 47 16V" Which would be "47" microfarad, "16V" volts. Actually removing and replacing the capacitors is a learned art and one that takes practice but generally, here is what I do: I use a pair of miniature flush angled wire cutters. I usually cut the top of the cap off, half way down. Then gently wiggle the remaining metal can and packing off of the two legs with a pair of small needle-nose pliers and break the plastic base in two to remove it. Now I have the two legs sticking up which are a cinch to desolder with your soldering pencil. You'll get electrolyte oozing around so remember to clean up really well with alcohol when you're done. You'll probably also see some crusty stuff hiding under the plastic base that needs to be cleaned up too. Once the crust and ooze is swabbed off, I clean the old solder from the pad with solder wick and re-tin it. A tiny bit of liquid flux down on the pads makes the new caps's leads flow right into the fresh pad. More cleaning to remove any extraneous flux and I'm done. If all of this is too daunting, I'm sure you may find someone willing to do the work for you if you ask around. - Dylan -- ----- You received this message because you are a member of the Vintage Macs group. The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] To leave this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/vintage-macs Support for older Macs: http://lowendmac.com/services/
