Installing OS4 on Classic - Blank screen after boot up (I think)

@Mikey_C

I would definitely recommend stripping the machine down to the bare minimum - that is, remove everything but the Blizzard.

If that works, keep adding and see where it fails.

If that doesn't work to begin with, then there is very likely a hardware problem.

You *might*, as Niels suggested, check the cooling. I have heard of people that had their cooler on the chip without any thermal compound, that will most likely cause lots of trouble.

@Mikey_C

The PSU may be half-dead. Check out with a multimeter that it really gives +5V. You may want to fit a proper PSU.

Once you have added a new PSU, don't forget to check with the multimeter which floppy disk connector pins are +5v and +12v. Once it's clear you are ready for a (slightly dangerous) phase: give additional power to your miggy using the floppy disk connector of your A1200. This will give you more stability and will avoid killing the tracks of your A1200 motherboard due to excessive power load.

@Mickey_C

Bring it to the next 3-Cag meeting !

// Me run !!!


-- Seriously --

If you need any A1200 spares (including OS3.9 CD), give me a shout if you're still in the p'boro area... I might be able to help out...

Jerry

@AmiGame

3-CAG is dead, long live ANT

Thanks man, but I am gonna be doing non-Amiga things in about, oh- 2.5 days from now

I'll get in touch with you if I need ya! Thanks for the offer

@Mikey_C

reading my amiga system startup colours & sequence

black is no cpu

constant white is cpu failure??

if this is of any help.

@twizzle

under AmigaOS4 (classic) the native RGB output, turns to white when a RTG driver goes up and running.

@Framiga

Anyway to disable it when its plugged to a TV?

@Mikey_C

mhhh ... removing the SYS:Devs/Monitors/ whatever you have in, should make the system starts in AGA only

Yes remove the video driver in devs/monitor, it will load the amiga os in aga mode

@nubechecorre

On a CD? Don't think thats possible.
As you can see from previous I can't access the Boot floppy.

Anyhow, It will have to wait for now, got something more important to take care of.

@Mikey_C

Remove the bvision and see what happens..