From your picture, that appears to be a capacitor and from your description of the problem and given the leakage, it needs to be replaced.

I've received several emails asking for information about where I bought my doors, but I can't respond directly because the posters do not have their emails enabled through GardenWeb. Here is additional information: We purchased all of our doors and casings except for our front door through Viking Door in San Jose. It's the company that our general contractor uses, so it was easy to coordinate everything with them. We bought the front door and all windows ourselves from Greenhouses Etc in San Jose - it's a very small shop and their prices are good. Greenhouses, ETC 1085 S De Anza Blvd. San Jose, CA 95129 408-446-1224

It's a popular style, rendered in wood, composite or steel. You can find them at HD and Lowes, or local dealers. I'm leaning towards Amarr [amarr.com], allegedly you can get a discount if you are a costco member, though to be honest I haven't been pleased with some of these costco 'ally' deals. Amarr is supposed to be a good brand, have dealers and installers nationwide. This one is insullated steel, called 'santiago': I'm planing a 2 tone paint job...

I have a fiberglass garage door in white, and while I love the look, the insulating qualities, & light weight (easier on the opener's motor than heavy wood), I wouldn't want it in a faux wood look. When I researched entry doors, it seemed like the big complaint about wood-look fiberglass is that it fades after time and needs to be restained periodically. I wouldn't want to do that for a big garage door. The gel staining wouldn't be too difficult, but applying the UV resistant poly coats would give me pause. A wood door's maintenance would be just as demanding, and wood is heavier (needs more powerful door openers) and is prone to warping (which is why we got rid of our old wood doors). I would think a steel door in a faux wood finish would have the same maintenance issues as fiberglass. It's not so much the door material as the coating on it -- stains & poly don't stand up to heat, sun, rain, & snow well. So just as long as you know what you're getting into. A wood look door may well be worth the effort & expense to you. And maybe your DIY skills are way better than mine! Wood garage doors seem to be the fashion now. Over in Advice, many are asking how to update their homes. The popular answers are 1. Don't paint the brick, it's a maintenance hassle; 2. Replace your garage door with a stained wood door. I question the responses because in my experience, it's the opposite: stained wood garage doors are a maintenance hassle, but painted brick is not if prepped well (is in good condition, sparkling clean and bone dry before painting).