> [Power Supply and Power issues]
3.11.6. The light in my Lisa power switch has burned out, can I replace it?
Yes, the lightbulb in the power switch is inexpensive and can be replaced with minimal effort.
- Note that the lightbulbs are fragile; the filament will likely break if the bulb is dropped on a hard floor.
1. Locate a replacement bulb
- The bulb is "type 86" which is a T-1 3/4, 6.3V, 200mA, 20000 hour, wedge base incandescent bulb
- These bulbs are readily available (ca. 2006) from electronic parts distributors, such as DigiKey, Allied Electronics, etc.
2. Turn off the Lisa
- Unplug it if you don't mind losing the time and date
3. Remove the switch cap
- The cap has two detents, one on each of the top and bottom. Using a non-metallic tool such as a wooden tongue depressor (to prevent gouging the plastic), pry the cap off. You may need to pry both sides at once.
4. Remove the bulb
- With the cap removed, you can see a small metal ejector tab below the bulb. Pull on the ejector to remove the bulb.
5. Insert the new bulb, and replace the cap
- Note that when replacing the cap, you will press the power switch, so the Lisa will turn on (or off) if it is plugged in.
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