A busted capacitor can be obviously broken (leaking brownish fluid, corroded, or with the leads severed), but sometimes it’s subtle. The top of a blown capacitor will be slightly bent outwards in a convex shape, rather than flat or slightly indented inwards like a working capacitor.

What happens when a capacitor blown?

Usually blown capacitors (electrolytics) give themselves away eventually by swelling and leaking electrolyte (NaOH) or by causing a short or causing crackling noises on the audio (high capacity ceramic capacitors). But some capacitor function still remains, albeit poor.

How do you fix a blown capacitor?

1. Step 1: Tools Needed. Checking the capacitor just requires your eyeballs but replacing them requires a few tools: …
2. Step 2: Open the Case. …
3. Step 3: What a Blown Capacitor Looks Like. …
4. Step 4: Remove the Old Capacitor. …
5. Step 5: Insert the New Capacitor. …
6. Step 6: Working Now!