just.in.time
Well-known member
Trying to bring an old Lisa back to life.
Widget hard drive shows advanced signs of corrosion. Everything else looks okay over all, especially the motherboard, cpu, IO, and two RAM cards.
I opened up the power supply, vacuumed it clean. Looks okay, no excessive cap bulging.
I don't have a keyboard, but I'm pretty sure I can use my Plus's mouse.
When I attempt to power on with widget hard drive data and power cables unplugged I get the main light on for ~1 second, along with a hissing sound from the power supply area, then what sounds like a pop from the speaker and everything goes out. Same results with widget drive power and data attached.
I'm guessing I need to check PSU voltages. In another thread someone mentioned removing the side panel near the PSU to do that. How do you remove that panel? Do we have a decent pinout for where to put the multimeter leads?
Widget hard drive shows advanced signs of corrosion. Everything else looks okay over all, especially the motherboard, cpu, IO, and two RAM cards.
I opened up the power supply, vacuumed it clean. Looks okay, no excessive cap bulging.
I don't have a keyboard, but I'm pretty sure I can use my Plus's mouse.
When I attempt to power on with widget hard drive data and power cables unplugged I get the main light on for ~1 second, along with a hissing sound from the power supply area, then what sounds like a pop from the speaker and everything goes out. Same results with widget drive power and data attached.
I'm guessing I need to check PSU voltages. In another thread someone mentioned removing the side panel near the PSU to do that. How do you remove that panel? Do we have a decent pinout for where to put the multimeter leads?