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It helps build a picture where our "good traffic" is coming from..
Thanks :)
VIDEO DAC BRIGHTNESS ISSUE
Re: VIDEO DAC BRIGHTNESS ISSUE
One has to do what one has to do...
Re: VIDEO DAC BRIGHTNESS ISSUE
Can someone do a neat version for the fixes page ? 
Re: VIDEO DAC BRIGHTNESS ISSUE
That'll be me out then, @PaulJ maybe?
If it ain't broke, test it to Destruction.
Re: VIDEO DAC BRIGHTNESS ISSUE
@PhilC , most likely give it a try later today. If it turns out I'll put up a picture. 
Re: VIDEO DAC BRIGHTNESS ISSUE
@PhilC - I may put in the cap later today and take a better pic to show the patch.PhilC wrote: Mon Dec 16, 2019 8:31 pm I've been a bit lazy and did the @Icky method and skipped the cap.
Re: VIDEO DAC BRIGHTNESS ISSUE
@Icky ok cool but so far I dont think its needed. Be interesting to see a before and after shot
If it ain't broke, test it to Destruction.
Re: VIDEO DAC BRIGHTNESS ISSUE
Ahh.. put the change in but still needs work. 
Its about 85% improved but the quality isn't what it could be. The white is a little muddy, some vertical interference I don't like. The black is still a little muted. Maybe I'll try a pot later today if I can find one that's useable. The divider is setting at 2.2 volts as it sets. Its hard to take a pic of the fix. The three raised pins are well above the other connections, there are no shorts.
Its about 85% improved but the quality isn't what it could be. The white is a little muddy, some vertical interference I don't like. The black is still a little muted. Maybe I'll try a pot later today if I can find one that's useable. The divider is setting at 2.2 volts as it sets. Its hard to take a pic of the fix. The three raised pins are well above the other connections, there are no shorts.
- IMG_1198.jpg (464.53 KiB) Viewed 4303 times
- FixCol1.jpg (166.08 KiB) Viewed 4303 times
Re: VIDEO DAC BRIGHTNESS ISSUE
Try adding a cap on the divider... The voltage should be 1.6V really as well.
@PhilC image seems ok though ? https://www.exxosforum.co.uk/forum/viewt ... =10#p30437
@PhilC image seems ok though ? https://www.exxosforum.co.uk/forum/viewt ... =10#p30437
Re: VIDEO DAC BRIGHTNESS ISSUE
I think @PhilC is using VGA. I am using RGB TV and I think it is a little darker than the original STFM. Will also tweak the divider to see if I can get it to match an original. Have put the cap in but did not see much difference.exxos wrote: Tue Dec 17, 2019 4:31 pm Try adding a cap on the divider... The voltage should be 1.6V really as well.
@PhilC image seems ok though ? https://www.exxosforum.co.uk/forum/viewt ... =10#p30437
I still have to try it on that TV that was whiteout. Will do that now.
Re: VIDEO DAC BRIGHTNESS ISSUE
So something still is not quite right with the video circuit. The TV is still on whiteout where as plugging in an original STFM into it its ok, see pics of both below:
- IMG_4649.jpeg (107.26 KiB) Viewed 4289 times
- IMG_4650.jpeg (158.85 KiB) Viewed 4289 times