crwdns2933803:012crwdne2933803:0
crwdns2933797:0Arthur Shicrwdnd2933797:0crwdne2933797:0
crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 Arthur Shi
- crwdns2933769:0crwdne2933769:0
- crwdns2933771:0crwdne2933771:0
- crwdns2933801:0crwdne2933801:0
crwdns2933807:0crwdne2933807:0
| [title] Testing diodes and LEDs | |
| - | [* black] Touch the red probe to the [link|https://guide-images.cdn.ifixit.com/igi/aKFNscLJM1l2fBMm.full|anode, "input", or unmarked end|new_window=true] of the diode. If you're testing an LED, touch the |
| - | [* black] Touch the black probe to the [link|https://guide-images.cdn.ifixit.com/igi/M6ThcySG4UQNggIQ.full|cathode, "output", or marked end|new_window=true] of the diode. If you're testing an LED, touch the |
| + | [* black] Touch the red probe to the [link|https://guide-images.cdn.ifixit.com/igi/aKFNscLJM1l2fBMm.full|anode, "input", or unmarked end|new_window=true] of the diode. If you're testing an LED, touch the longer lead. |
| + | [* black] Touch the black probe to the [link|https://guide-images.cdn.ifixit.com/igi/M6ThcySG4UQNggIQ.full|cathode, "output", or marked end|new_window=true] of the diode. If you're testing an LED, touch the shorter lead (or the lead next to the flat side of the LED). |
| [* icon_note] The multimeter should show a non-zero voltage, which is the ''forward bias voltage''. | |
| [* icon_note] If the multimeter reads 0L or 0V, the diode is burned out or short-circuited, respectively. | |
| [* black] Reverse the probes so they touch the opposite ends of the diode. | |
| [* icon_note] The multimeter should show 0L, which stands for open circuit. | |
| - | [* icon_note] If the multimeter shows anything other than open circuit, the diode is defective. |
| + | [* icon_note] If the multimeter shows anything other than open circuit ''and'' the diode isn't connected to circuitry, the diode is defective. |