A600 wrong colors

fc.studio · 11 October 2007, 08:31

An ebay seller has no. 2 A600. On speaking with him, I found that one of them works but giving different colors. For example the boot screen, those with the animation disk, has brown background instead of the classic purple... He can play games, but these come with some different colors too.

He tried to change video cables, but wiht no result.

Well, what happend to those A600, could it be easily fixed?

vroom6sri · 11 October 2007, 09:07

Do this mean the built in modulator is broken? If so would a solution be to get an old A500 external modulator to plug into the monitor port of the A600 and connect it to your TV? Or, of course, just connect it to a suitable monitor.

Come to think of it... has he plugged the TV cable into the right socket? I have very vague memories of my old A600 and what happened if you connected it to the tv by the wrong socket.

fc.studio · 11 October 2007, 10:42

He tried RF modulator and then RGB cable (euro AV) with same result.

DrF · 13 October 2007, 12:15

This happened to me MANY, MANY years ago with a A500+, I do recall it happening after a power surge destroyed both my PSUs! (A570+A500)
Just when I wanted to play Ultimate Soccer Manager.. it was a Friday 13th too.... the system was fine but the kickstart colours looked off and games I remember trying Frontier looked VERY odd.

Anyhow I think I had the CIAs replaced and all was well, cost me £40 too!!!!
Which was alot for a paperboy, and I had to buy PSUs

fc.studio · 13 October 2007, 13:13

I'm not sure, but perhaps A600 and A1200 owners can't replace CIAs, so nothing can be done to solve this trouble.

DrF · 13 October 2007, 16:59

Quote:

Originally Posted by fc.studio

I'm not sure, but perhaps A600 and A1200 owners can't replace CIAs, so nothing can be done to solve this trouble.

Best hope its not the CIAs, it could be anything I am sure in my case it was, maybe its something very simple, I do recall A520 modulators being VERY fragile, well in my hands at least, since the A600/1200 have internal modulators maybe they go funny too?

Has the guy tried the composite output?

fc.studio · 17 October 2007, 09:02

Yes, it seems he tried all 3 connections (rf modulator, composite, rgb euroav with Scart cable).

Predseda · 17 October 2007, 09:15

I am afraid that it is a serious problem and because the machine is A600, it can't be easilly fixed, cos A600s are nearly unrepairable.

Galaxy · 17 October 2007, 10:31

I had this problem with an A1200 (was like one of the colours was missing), but it turned out to just exist on the RGB output - the were correct from the composite output.

fc.studio · 17 October 2007, 10:48

It's the first time I hear a similar problem but, like Predseda, I think unfortunately it can't be easily fixed.

Predseda · 17 October 2007, 10:56

I'd avoid that A600 from ebay, maybe only for spare parts (but with A600 the number of useful spare parts is limited).

fc.studio · 17 October 2007, 14:42

Quote:

Originally Posted by Predseda

I'd avoid that A600 from ebay, maybe only for spare parts (but with A600 the number of useful spare parts is limited).

Certainly I would have avoided that A600, but the seller, when I told him that it was not normal the brown boot screen, asked me for an help and so I came here to know your opinions and suggestions.

Predseda · 17 October 2007, 19:54

Thats fair.

Fingerlickin_B · 19 October 2007, 11:53

Quote:

Originally Posted by Galaxy

I had this problem with an A1200 (was like one of the colours was missing), but it turned out to just exist on the RGB output - the were correct from the composite output.

Yeah man, if that's the one I got from you it's still kicking without output problems...just a dry solder on the RGB connector

Just to take things O/T a bit...drop me a line and advise on how things are going with the 3000T!

PZ.

Foul · 12 July 2012, 17:12

just happend to me today !

don't know what to do :\ (caps are new..)

Retrofan · 12 July 2012, 17:48

I opened a thread very similar to this http://eab.abime.net/showthread.php?t=64675

I've got a blue boot screen, using composite or rgb-scart.

I don't believe the CIA has something to be with this:
http://en.wikipedia.org/wiki/Amiga_custom_chips

CIA
All Amiga computers use two 8520 CIAs (Complex Interface Adapter) for peripheral interfacing and the system timers. These chips were also used in some other Commodore devices.

'Even' CIA functions: floppy control, serial control, some parallel port status
'Odd' CIA functions: parallel port, keyboard, some floppy support, joystick/mouse buttons.

Foul · 12 July 2012, 18:11

very strange .. was in the Cosmos's Hands, working perfect, and 2 days after, at home ... this sh**ty background color ..

i juste added pcmcia fix and added 220 Ohm Resistor on R118 ... but with or without fix .. same color

Retrofan · 12 July 2012, 18:22

No idea, but I would start cleaning the mobo with isopropylic alcohol.

Foul · 12 July 2012, 18:23

i cleaned mine with F2 Contact bomb without results...

is any of this timing fix could do that ? ( http://www.ianstedman.co.uk/Amiga/am..._mobo_fix.html )

mine is REV 2B with all fix :

- Clockport to Paula wire link
- U8 8520 CIA Wire link
- Resistor added by ROMs
- PCMCIA Fix ( 10ùF cap added)

Retrofan · 12 July 2012, 18:26

Try pressing the Lisa chip with a finger while it's on to see if there's any bad contact there.

11 October 2007, 08:31	#1
fc.studio Cat lover Join Date: May 2004 Location: Italy Age: 54 Posts: 804	A600 wrong colors An ebay seller has no. 2 A600. On speaking with him, I found that one of them works but giving different colors. For example the boot screen, those with the animation disk, has brown background instead of the classic purple... He can play games, but these come with some different colors too. He tried to change video cables, but wiht no result. Well, what happend to those A600, could it be easily fixed?

12 July 2012, 17:48	#16
Retrofan Ruler of the Universe Join Date: Mar 2010 Location: Lanzarote/Spain Posts: 6,190	I opened a thread very similar to this http://eab.abime.net/showthread.php?t=64675 I've got a blue boot screen, using composite or rgb-scart. I don't believe the CIA has something to be with this: http://en.wikipedia.org/wiki/Amiga_custom_chips CIA All Amiga computers use two 8520 CIAs (Complex Interface Adapter) for peripheral interfacing and the system timers. These chips were also used in some other Commodore devices. 'Even' CIA functions: floppy control, serial control, some parallel port status 'Odd' CIA functions: parallel port, keyboard, some floppy support, joystick/mouse buttons.

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11 October 2007, 09:07	#2
vroom6sri Registered User Join Date: Sep 2005 Location: Peterborough Age: 47 Posts: 845	Do this mean the built in modulator is broken? If so would a solution be to get an old A500 external modulator to plug into the monitor port of the A600 and connect it to your TV? Or, of course, just connect it to a suitable monitor. Come to think of it... has he plugged the TV cable into the right socket? I have very vague memories of my old A600 and what happened if you connected it to the tv by the wrong socket.

11 October 2007, 10:42	#3
fc.studio Cat lover Join Date: May 2004 Location: Italy Age: 54 Posts: 804	He tried RF modulator and then RGB cable (euro AV) with same result.

13 October 2007, 12:15	#4
DrF Blessed A1200 Of TeH Rat Join Date: Aug 2007 Location: Bham, UK Age: 42 Posts: 496	This happened to me MANY, MANY years ago with a A500+, I do recall it happening after a power surge destroyed both my PSUs! (A570+A500) Just when I wanted to play Ultimate Soccer Manager.. it was a Friday 13th too.... the system was fine but the kickstart colours looked off and games I remember trying Frontier looked VERY odd. Anyhow I think I had the CIAs replaced and all was well, cost me £40 too!!!! Which was alot for a paperboy, and I had to buy PSUs

13 October 2007, 13:13	#5
fc.studio Cat lover Join Date: May 2004 Location: Italy Age: 54 Posts: 804	I'm not sure, but perhaps A600 and A1200 owners can't replace CIAs, so nothing can be done to solve this trouble.

17 October 2007, 09:02	#7
fc.studio Cat lover Join Date: May 2004 Location: Italy Age: 54 Posts: 804	Yes, it seems he tried all 3 connections (rf modulator, composite, rgb euroav with Scart cable).

17 October 2007, 09:15	#8
Predseda Puttymoon inhabitant Join Date: Mar 2007 Location: Tromaville Age: 46 Posts: 7,546	I am afraid that it is a serious problem and because the machine is A600, it can't be easilly fixed, cos A600s are nearly unrepairable.

17 October 2007, 10:31	#9
Galaxy Registered User Join Date: May 2004 Location: Canberra, Australia Age: 46 Posts: 1,417	I had this problem with an A1200 (was like one of the colours was missing), but it turned out to just exist on the RGB output - the were correct from the composite output.

17 October 2007, 10:48	#10
fc.studio Cat lover Join Date: May 2004 Location: Italy Age: 54 Posts: 804	It's the first time I hear a similar problem but, like Predseda, I think unfortunately it can't be easily fixed.

17 October 2007, 10:56	#11
Predseda Puttymoon inhabitant Join Date: Mar 2007 Location: Tromaville Age: 46 Posts: 7,546	I'd avoid that A600 from ebay, maybe only for spare parts (but with A600 the number of useful spare parts is limited).

17 October 2007, 19:54	#13
Predseda Puttymoon inhabitant Join Date: Mar 2007 Location: Tromaville Age: 46 Posts: 7,546	Thats fair.

12 July 2012, 17:12	#15
Foul Registered User Join Date: Jun 2009 Location: Perigueux/France Age: 49 Posts: 1,516	just happend to me today ! don't know what to do :\ (caps are new..)

12 July 2012, 18:11	#17
Foul Registered User Join Date: Jun 2009 Location: Perigueux/France Age: 49 Posts: 1,516	very strange .. was in the Cosmos's Hands, working perfect, and 2 days after, at home ... this sh**ty background color .. i juste added pcmcia fix and added 220 Ohm Resistor on R118 ... but with or without fix .. same color

12 July 2012, 18:22	#18
Retrofan Ruler of the Universe Join Date: Mar 2010 Location: Lanzarote/Spain Posts: 6,190	No idea, but I would start cleaning the mobo with isopropylic alcohol.

12 July 2012, 18:23	#19
Foul Registered User Join Date: Jun 2009 Location: Perigueux/France Age: 49 Posts: 1,516	i cleaned mine with F2 Contact bomb without results... is any of this timing fix could do that ? ( http://www.ianstedman.co.uk/Amiga/am..._mobo_fix.html ) mine is REV 2B with all fix : - Clockport to Paula wire link - U8 8520 CIA Wire link - Resistor added by ROMs - PCMCIA Fix ( 10ùF cap added)

12 July 2012, 18:26	#20
Retrofan Ruler of the Universe Join Date: Mar 2010 Location: Lanzarote/Spain Posts: 6,190	Try pressing the Lisa chip with a finger while it's on to see if there's any bad contact there.

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