Strange Colors with my TS 2068

2 messages · 2008-01-03 → 2008-01-03 · Yahoo Group era · View archive on archive.org

Participants: Adam Trionfo, Fred

Preserved from the Timex/Sinclair 2068 Yahoo Group (2001–2019), which is no longer online. Text reproduced from the archive.org archive; email addresses masked.

Messages

1. Strange Colors with my TS 2068

Adam Trionfo · Thu, 3 Jan 2008 12:17:

I've been going through the BASIC manual for the Timex Sinclair 2068.  The first four chapters have got me familiar with the keyboard layout-- which does take some getting used to.  All was smooth sailing until I got to chapter 5, which deals with color.  I didn’t think that this would be any kind of problem, but I’m getting strange results.

When I use the BORDER command, except for black and white, I am NOT seeing the colors that I expect.  If I type in BORDER followed by a number I expect to get the following colors (the colors in parenthesis are the colors that I actually get with my 2068):

1) Blue (Dark Blue)
2) Red (Lighter Blue)
3) Magenta (Even Lighter Blue)
4) Green (Yellow)
5) Cyan (Light Yellow… or maybe a gray?)
6) Yellow (Pink)
7) White (White)
8) Black (Black)

I tried to adjust the TVs color and tint controls.  I tried a different TV.  I tried a different monitor cable.  No change.  I tried to use the BORDER command with the “Eighty-One” emulator in 2068 mode and I got the results that I expected.

What’s going on here?  Any ideas?

Adam
_________________________________________________________________
Don't get caught with egg on your face. Play Chicktionary!
http://club.live.com/chicktionary.aspx?icid=chick_wlhmtextlink1_dec

2. Re: [ts2068] Strange Colors with my TS 2068

Fred · Fri, 4 Jan 2008 14:27:

This is discussed on this list from time to time, it seems that there  
may be a combination of getting a "compatible" TV (this may only be  
relevant for the RF output - modern electronic tuner TVs are pickier  
about the signal), and some component drying out in the TS2068 itself.  
You can compensate for the latter by tweaking some pots on the board.

Here is a quote from a previous mail to this list by [email]:
> For those of you who are interested, by the way, my friend had  
> another 2068 which displayed colors wrong. It displayed very  
> different tones of the regular ZX spectrum color range. Magenta  
> looked pink, cyan looked turquoise, yellow looked orange. We fixed  
> it by tweaking the VR2 and VR3 settings, (in other words the R-y and  
> B-y vectors.) and now the colors look right. The only problem is we  
> do not have an NTSC vectorscope and waveform monitor so we can't  
> really fine tune it to the exact NTSC specs, but the colors "look"  
> right to both of us :)


HTH,
Fred

On 04/01/2008, at 7:17, Adam Trionfo wrote:

>
> I've been going through the BASIC manual for the Timex Sinclair  
> 2068.  The first four chapters have got me familiar with the  
> keyboard layout-- which does take some getting used to.  All was  
> smooth sailing until I got to chapter 5, which deals with color.  I  
> didn’t think that this would be any kind of problem, but I’m getting  
> strange results.
>
> When I use the BORDER command, except for black and white, I am NOT  
> seeing the colors that I expect.  If I type in BORDER followed by a  
> number I expect to get the following colors (the colors in  
> parenthesis are the colors that I actually get with my 2068):
>
> 1) Blue (Dark Blue)
> 2) Red (Lighter Blue)
> 3) Magenta (Even Lighter Blue)
> 4) Green (Yellow)
> 5) Cyan (Light Yellow… or maybe a gray?)
> 6) Yellow (Pink)
> 7) White (White)
> 8) Black (Black)
>
> I tried to adjust the TVs color and tint controls.  I tried a  
> different TV.  I tried a different monitor cable.  No change.  I  
> tried to use the BORDER command with the “Eighty-One” emulator in  
> 2068 mode and I got the results that I expected.
>
> What’s going on here?  Any ideas?
>
> Adam
> _________________________________________________________________
> Don't get caught with egg on your face. Play Chicktionary!
> http://club.live.com/chicktionary.aspx?icid=chick_wlhmtextlink1_dec
>
>
> Yahoo! Groups Links
>
>
>

Indexed under

Video upgrades (composite, RGB, HDMI) · Repair & restoration