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qbancoffee / imac_g3_ivad_board_init

iMac G3 IVAD board initialization with an arduino
GNU Lesser General Public License v3.0
146 stars 14 forks source link

I have everything assembled but the screen doesnt shows anything. #17

Closed GerardPolloRebozado closed 6 months ago

GerardPolloRebozado commented 1 year ago

At first when I click the button it turned on and you heard the electric sound and the green led also turned on, now it doesnt turn on so I supose there is a power issue. Is there anyway i coul use a standard computer PSU to power it?

qbancoffee commented 1 year ago

You shouldn't need to use a standard PSU to power the iMac because the analog board takes care of that. Are you using an arduino to send the init sequence?

GerardPolloRebozado commented 1 year ago

You shouldn't need to use a standard PSU to power the iMac because the analog board takes care of that. Are you using an arduino to send the init sequence?

yes i am

GerardPolloRebozado commented 1 year ago

You shouldn't need to use a standard PSU to power the iMac because the analog board takes care of that. Are you using an arduino to send the init sequence?

I have been testing some voltages. As far as i know by just having the computer pluged in the J20 pin of 5V trickle voltage should be 5V? My tester read 0.1. What gives the 5V to the J20? The analog board? or the down converter?

qbancoffee commented 1 year ago

Have you made any progress with this?

GerardPolloRebozado commented 1 year ago

No, still same issue don't know whats the problem, I just give up probably the thing that was like a PSU ( I don't remember its name) is broken the iMac wasn't wworking well before trying this.