Hi. Which iMac component (or subcomponent like transistors, resistors, etc.) needs to be replaced or repaired with iMacs that have these symptoms (have tried all the basic repair methods: new battery, reset, pram rest, 24 hour-1 week wait, etc.):

iMac G3/350 (Summer 2000 - Indigo) Specs (M7667LL/A)

- it turns on with power button on the normal green light and stays on but there's no video

iMac G3/400 DV (Slot Loading - Fruit) Specs (M7493LL/A*)

- when turned on, it turns off

iMac G3/233 Original - Bondi (Rev. A & B) Specs (M6709LL/A*)

- when turned on, the power button blinks orange then turns off. There's no video as well

iMac G3/266 (Fruit Colors) Specs (M7345LL/A*)

iMac G3/333 (Fruit Colors) Specs (M7440LL/A*)

iMac G3/266 (Fruit Colors) Specs (M7345LL/A*)

- all three same symptom as with the Bondi

Could it be just the battery (will try that again)? Thanks in advance. Gbu.

-Alvin