Reply 20 of 31, by Jo22
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liqmat wrote on 2021-10-26, 18:11:I don't have any of that anymore, but this is the model. […]
Jo22 wrote on 2021-10-26, 17:48:liqmat wrote on 2021-10-13, 20:51:These photos are back in 2015 when I was restoring a slew of C64 and VIC-20s. As you can see, the image on that LCD TV is crystal clear with no modifications made on the Commodore systems themselves. Used a composite A/V cable I bought on Ebay.
c64_basic.jpgc64-vic20_restoration.jpg
Um, does that screen use a scaler maybe?
On my b/w tv from the 70s there is noise, with vertical stripes (using the stock RF modulator box). 🙁I don't have any of that anymore, but this is the model.
Paired with one of these.
It was a crystal clean image.
Ah, I see. Thanks for the links! 😀
I did the modification of removing C6 (2x 68pf ?).
The image turned grayscale, but the vertical lines remained.
Could it be that the VIC II is the real meanie here?
I've checked both via RCA (b/w CRT tv via RF) and the AV/Composite cable (4k smart TV with SCART input)..
From what I can tell, there's not much difference. 😞
The picture of the old televisor isn't that much different, except for some slight noise due to the method of signal transportation (RF).
If I do increase contrast, it goes away, but also increases these nasty vertical lines.
Edit: Found some more information.
Apparently, the stripes are always there unless a mod is installed (LumaFix64 etc).
Also, the original C64 is more affected than, say, the C64C.
http://hitmen.c02.at/temp/palstuff
https://www.obliterator918.com/my-quest-for-a … display-for-it/
Edit: Just found another interesting article/blog entry about the LumaFix64..
It seems that these C64 video issues can't be completely cured.
Also, the issues are apparent in different intensity, depending on the VIC II models (beware, some need 12v!).
https://www.breadbox64.com/blog/the-lumafix64-mod/
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