A600 wrong colors - Page 2

Retrofan · 12 July 2012, 20:38

The resistors are E251R, E264R and the following? (the ones on the left?)

Foul · 12 July 2012, 20:59

E258, E259, E260

Retrofan · 12 July 2012, 21:13

Thanks. One can change with revisions, but it's the same in the 1D1, the ones on the right.

Edit: In my case they aren't either. I've changed them now

jamiem · 15 July 2012, 22:57

Hi,

Just found this post whilst looking for the answer to another problem I have with my video output.

Anyway, I have an A1200, revision 1D.4, which has this exact same problem, the colours are all wrong on all outputs, RF, composite and RGB.

I have replaced the capacitors, resoldered all the pins and have measured all the voltages on the RGB port comparing them to my other A1200 and can see no problem

.

The strange thing is, if I go into the early startup menu and change to NTSC the colours are perfect, but as far as I'm aware it's a PAL motherboard.

@Foul, have you tried switching to NTSC?

Jamie.

Retrofan · 17 July 2012, 01:00

Quote:

Originally Posted by jamiem

Hi,

Just found this post whilst looking for the answer to another problem I have with my video output.

Anyway, I have an A1200, revision 1D.4, which has this exact same problem, the colours are all wrong on all outputs, RF, composite and RGB.

I have replaced the capacitors, resoldered all the pins and have measured all the voltages on the RGB port comparing them to my other A1200 and can see no problem

.

The strange thing is, if I go into the early startup menu and change to NTSC the colours are perfect, but as far as I'm aware it's a PAL motherboard.

@Foul, have you tried switching to NTSC?

Jamie.

I see clearly the difference using the Comp. cable. Using Pal (it's a Pal miggy) I watch it blue, but changing to NTSC I see it blinking a lot and changing colors, but sometimes the right ones (it seems), or at least not all in blue. I can use NTSC using the rgb-scart cable.

What I see and I don't know if that's ok is that the chip beside Alice, XU9 gets very hot, more than Alice. What does it make, XU9, or is it normal so hot?

altcomputing · 19 July 2012, 01:01

There are also small chips Q231, Q232, Q233 (A600 rev. 1.5) responsible for color representation. They are placed around Sony Video Chip. Replace them and see.

altcomputing · 20 July 2012, 00:23

Quote:

Originally Posted by Retrofan

What I see and I don't know if that's ok is that the chip beside Alice, XU9 gets very hot, more than Alice. What does it make, XU9, or is it normal so hot?

It's a GAL chip and they're known for running quite hot, should be OK.

12 July 2012, 20:38	#41
Retrofan Ruler of the Universe Join Date: Mar 2010 Location: Lanzarote/Spain Posts: 2,676	The resistors are E251R, E264R and the following? (the ones on the left?) __________________ AmiKit for Real Amigas Released, Click Here A1200 1D1, 8Gb SSD Hd, ACA 1231/42. A1200 2B, Lateral slot for Cf Hd's, Tray system Dvd. ACA1230/56, Fast Ata MKII, Indivision MkII with Hdmi. A1200 1D1, Lateral slot for Cf Hd's, Tray system Dvd, Clockport expander, Delfina, Subway, IDefix, BPPC, BVision, Acard with lateral slot for Scsi Cf HD... C=64 with ITX inside. Posting with it.

12 July 2012, 20:59	#42
Foul Registered User Join Date: Jun 2009 Location: Perigueux/France Age: 38 Posts: 775	E258, E259, E260 __________________ Best Amiga Linux Emulator ! --> http://fs-uae.net/ A500 KS 1.3 + A501 A1200 2.0B Fixed KS/WB 3.9 + CF Kingston 16Go/PFS3DS + PSX to DB9 + Kipper2k CF card external Adapter + 2x Cumana CAX354 External Floppy Disc Drive

12 July 2012, 21:13	#43
Retrofan Ruler of the Universe Join Date: Mar 2010 Location: Lanzarote/Spain Posts: 2,676	Thanks. One can change with revisions, but it's the same in the 1D1, the ones on the right. Edit: In my case they aren't either. I've changed them now __________________ AmiKit for Real Amigas Released, Click Here A1200 1D1, 8Gb SSD Hd, ACA 1231/42. A1200 2B, Lateral slot for Cf Hd's, Tray system Dvd. ACA1230/56, Fast Ata MKII, Indivision MkII with Hdmi. A1200 1D1, Lateral slot for Cf Hd's, Tray system Dvd, Clockport expander, Delfina, Subway, IDefix, BPPC, BVision, Acard with lateral slot for Scsi Cf HD... C=64 with ITX inside. Posting with it. Last edited by Retrofan; 14 July 2012 at 13:13.

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15 July 2012, 22:57	#44
jamiem Registered User Join Date: Jul 2012 Location: Inverness / Scotland Posts: 6	Hi, Just found this post whilst looking for the answer to another problem I have with my video output. Anyway, I have an A1200, revision 1D.4, which has this exact same problem, the colours are all wrong on all outputs, RF, composite and RGB. I have replaced the capacitors, resoldered all the pins and have measured all the voltages on the RGB port comparing them to my other A1200 and can see no problem . The strange thing is, if I go into the early startup menu and change to NTSC the colours are perfect, but as far as I'm aware it's a PAL motherboard. @Foul, have you tried switching to NTSC? Jamie.

19 July 2012, 01:01	#46
altcomputing MC68060@80MHz Join Date: Jan 2011 Location: Poland/Wroclaw Age: 27 Posts: 71	There are also small chips Q231, Q232, Q233 (A600 rev. 1.5) responsible for color representation. They are placed around Sony Video Chip. Replace them and see.

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