I agree with Phreakout,
With G3 imac series, the main failure is with the PAV board (often the Flyback transformer is the culprit)
If the two units are of the same type (ie tray or slot loading) you can try swaping logic boards.
The message is a kernel panic, can be hard or soft issue.
try swaping ram, i had a lot of issues with sticks on G3 Imacs.(you will probably get an unusual chime, but this is not always the case)
Concerning the P-RAM battery, you can have a try without, and press the reset (only once)anyway.
Never had any issue with Down Convertor Board, but swaping boards is a logical path, and the easy one... the PAV board is hard to reach.
With G3 imac series, the main failure is with the PAV board (often the Flyback transformer is the culprit)
If the two units are of the same type (ie tray or slot loading) you can try swaping logic boards.
The message is a kernel panic, can be hard or soft issue.
try swaping ram, i had a lot of issues with sticks on G3 Imacs.(you will probably get an unusual chime, but this is not always the case)
Concerning the P-RAM battery, you can have a try without, and press the reset (only once)anyway.
Never had any issue with Down Convertor Board, but swaping boards is a logical path, and the easy one... the PAV board is hard to reach.