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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: alanh on November 02, 2008, 08:42:55 PM

Title: A3000 tick & fuzzy screen
Post by: alanh on November 02, 2008, 08:42:55 PM

Hi,

I've got an A3000D and when powering up from cold the screen tends to fuzz on individual scanlines all the way down the screen as though certain scanlines shift a few pixels to the left and right randomly for a few minutes.

After it's warmed up they tend to clear up.

I've just plugged in an ATX power supply and it's clean.

Is it possible that the TICK signal can cause this ?

Title: Re: A3000 tick & fuzzy screen
Post by: Damion on November 02, 2008, 09:14:00 PM

Mine does the same thing, regardless of the TICK jumper setting. I dunno if they all do it, or if there's some age-related component failure. :shrug:

Title: Re: A3000 tick & fuzzy screen
Post by: tone007 on November 02, 2008, 09:17:30 PM

Mine does this as well, for maybe 30 seconds or so and then it's fine.

Title: Re: A3000 tick & fuzzy screen
Post by: rkauer on November 02, 2008, 09:45:23 PM

 Ancient capacitors are the common cause to this type of behaviour.

 Swap all motherboard/PSU electrolytic capacitors for new units and you guys are covered for the next 10/15 years. ;-)

Title: Re: A3000 tick & fuzzy screen
Post by: taunusand on November 02, 2008, 09:45:51 PM

Also mine does this, but after a couple of minutes it goes away. Only on the VGA output.