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Author Topic: A600 - Purple Screen of Death!?  (Read 1496 times)

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Offline tokyoracerTopic starter

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A600 - Purple Screen of Death!?
« on: December 10, 2007, 12:18:28 AM »
I just noticed the A600 I was using turned purple and have no idea why, TV is fine and the machine seems to function ok. Would anyone know anything about this or have experienced the same problems? :-?
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Offline Virge

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Re: A600 - Purple Screen of Death!?
« Reply #1 on: December 10, 2007, 12:29:23 AM »
Hi. Seems to be the rom ... is the rom 2.04 / 2.05 ?

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Offline tokyoracerTopic starter

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Re: A600 - Purple Screen of Death!?
« Reply #2 on: December 10, 2007, 09:56:46 AM »
No, it's 3.1 .
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Offline rkauer

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Re: A600 - Purple Screen of Death!?
« Reply #3 on: December 10, 2007, 04:14:59 PM »
 Do you use an original ROM or a writed EPROM?
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Offline Piru

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Re: A600 - Purple Screen of Death!?
« Reply #4 on: December 10, 2007, 04:28:29 PM »
Green component missing from the RGB signal perhaps? Check the cable and connectors.
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Offline tokyoracerTopic starter

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Re: A600 - Purple Screen of Death!?
« Reply #5 on: December 10, 2007, 05:03:32 PM »
Cables all seem fine, I't isn't an official MX ROM chip (has paper label) so I presume it is written on.
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Offline DrDekker

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Re: A600 - Purple Screen of Death!?
« Reply #6 on: December 11, 2007, 04:35:27 PM »
As Piru has suggested - it'll be the green component that's gone west.  Same thing has happened with one of my A600's.

Whether it's Denise or the hybrid U37(?) that's at fault - I don't know, but it's definitely not the cabling as all outputs (scart, VGA and composite) are affected.
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Offline kolla

Re: A600 - Purple Screen of Death!?
« Reply #7 on: December 11, 2007, 05:58:40 PM »
I have an A1200 that also suffers from purple taint :-)
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Offline tokyoracerTopic starter

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Re: A600 - Purple Screen of Death!?
« Reply #8 on: December 12, 2007, 02:42:50 AM »
Are you sure it's the ROM? I don't fancy forking out £15 or so just for a chip if it is working fine. :-?
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Offline rkauer

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Re: A600 - Purple Screen of Death!?
« Reply #9 on: December 12, 2007, 03:16:13 AM »
 No, it's not the ROM, you have a busted ECS Denise, or the related color chip is the problem (or even a faulty SMD resistor).

 If you have the schematics (and the skills), trace the green signal along the way from Denise to the CXA1145 (video encoder), U31 (74HCT244), Q212 (green transistor)+ associated resistors, and other areas involved.
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Offline tokyoracerTopic starter

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Re: A600 - Purple Screen of Death!?
« Reply #10 on: December 12, 2007, 11:55:43 PM »
I think "bugger" springs to mind. :lol:

New motherboard it is then... :roll:
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Offline rkauer

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Re: A600 - Purple Screen of Death!?
« Reply #11 on: December 13, 2007, 01:01:48 AM »
 I, personally, never will get up to simple problem like that!
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Offline tokyoracerTopic starter

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Re: A600 - Purple Screen of Death!?
« Reply #12 on: December 13, 2007, 11:26:39 AM »
@ rkauer: I don't get you. :-?
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