Hi everyone,
I just bought a Macintosh Classic from 1991. When I turn it on, I have to wait for a few seconds/minutes to make it startup (probably due to the analog board capacitors), but then I have the checkerboard screen issue with a wobbly image.
I washed the motherboard with solder flux cleaner, and then changed the capacitors, but it had no effects. So I have a few questions :
- Can the lack of battery cause this issue ? I couldn't find a suitable one for the moment
- I did not change the analog card capacitors, could it be the reason ?
- What are the expected voltages on the analog board to motherboard cables ?
- Do you think solder flux cleaner is not enough to wash the board ? Should I use water and soap ?
Thank you very much !
I just bought a Macintosh Classic from 1991. When I turn it on, I have to wait for a few seconds/minutes to make it startup (probably due to the analog board capacitors), but then I have the checkerboard screen issue with a wobbly image.
I washed the motherboard with solder flux cleaner, and then changed the capacitors, but it had no effects. So I have a few questions :
- Can the lack of battery cause this issue ? I couldn't find a suitable one for the moment
- I did not change the analog card capacitors, could it be the reason ?
- What are the expected voltages on the analog board to motherboard cables ?
- Do you think solder flux cleaner is not enough to wash the board ? Should I use water and soap ?
Thank you very much !