A1000 shows black screen

[Maverick]

Hi,

just got two A1000 from a colleague of mine and they both refuse to show a picture. Of course I'm quite irritated that both show the same fault, but my A500 works fine with this monitor and cable so it have to be the Amigas itself causing the problem. I can hear the drive trying to read the kickstart disk, but that's all - no pic.
What is an A1000 doing when no kickstart disk is inserted? I assume it would show at least something, but I never had an A1000 before and my colleague can not remember it anymore.

Thanks for your help

Frank

[microslave]

Hi Maverick,
you should see at last the screen requesting a kickstart disk. I also used an Amiga 1000 between 1986 and 1992, but I remember only vaguely any hardware trouble with monitors. I even could connect a composite monitor using a cinch cable, but always used the original amiga rgb monitor, which was connected with a scart cable.
Sometimes I connected my Amiga to my TV set, using the scart port, but I had to set a switch on my tv to use "digital rgb".
Maybe you could try to use a simple cinch cable to connect your amiga 1000 to the composite video input of your tv.
Hope these comments are of any help for you.
Greets

[Maverick]

you should see at last the screen requesting a kickstart disk

Yeah, that's what I expected, too. But both of them showing the same fault made me wonder if there might be something else.
May be it has something to do with the power supply, because there's only one of them working and so I had to try both machines with the same power supply.
If I have time I'll measure the voltages, but I don't know if an old A1000 is worth the effort to fix it. Especially since I first have to get a schematic of the power supply unit, the one I have is for the motherboard only.