Spectrum 128K toastrack jail bars?

[Lardo Boffin]

I have put in a vLA128 and it has made no difference to the jail bars.

Anybody have any suggestions?

Many thanks!!!!

[deano467]

For jailbar reduction you could add caps to the memory chips..
https://youtu.be/R_E3eX3Gtas

The vertical white lines was something I came across before, the RGB signal was too strong for the monitor, and I was able to adjust monitor settings to fix

https://m.facebook.com/story/graphql_pe ... cwOTY2OTAx

[matalog]

I think you have to replace all caps initially. Then replace C28 with a 47uF capacitor (original is 22uF, right of the 5 way keyboard connector)
Replace caps C7 and C8 with 1uF ceramic capacitors (next to IC12 and IC13 RAM chips, bottom left of the board). You could also add 1uF caps underneath the board between all of the ram power lines.

[Lardo Boffin]

For jailbar reduction you could add caps to the memory chips..
https://youtu.be/R_E3eX3Gtas

The vertical white lines was something I came across before, the RGB signal was too strong for the monitor, and I was able to adjust monitor settings to fix

https://m.facebook.com/story/graphql_pe ... cwOTY2OTAx

Thanks. I have done most of the jail bar stuff but will have a look to see what else there is from the video.

I’m not on facebook - is there any other way to see whats in the link please?

[Lardo Boffin]

I think you have to replace all caps initially. Then replace C28 with a 47uF capacitor (original is 22uF, right of the 5 way keyboard connector)
Replace caps C7 and C8 with 1uF ceramic capacitors (next to IC12 and IC13 RAM chips, bottom left of the board). You could also add 1uF caps underneath the board between all of the ram power lines.

I have done most of the jail bar stuff but not adding 1uF caps underneath the board. Where would they go?

[matalog]

Sorry, that should have been 1nF caps below the RAM, I believe it is over the power lines between, but have a look at this video of it being done to a +2.

https://www.youtube.com/watch?v=prFIgkQS_A0

[deano467]

For jailbar reduction you could add caps to the memory chips..
https://youtu.be/R_E3eX3Gtas

The vertical white lines was something I came across before, the RGB signal was too strong for the monitor, and I was able to adjust monitor settings to fix

https://m.facebook.com/story/graphql_pe ... cwOTY2OTAx

Thanks. I have done most of the jail bar stuff but will have a look to see what else there is from the video.

I’m not on facebook - is there any other way to see whats in the link please?

Yes I was able to reduce the RGB settings in the monitor from 100% on each red,green, blue to 75%

[Lardo Boffin]

Thanks Deano! Will have a play with the settings.

[Lardo Boffin]

Recently I got an RGB to HDMI upscaler (from this thread https://stardot.org.uk/forums/viewtopic.php?f=3&t=14430) and it was jaw droppingly good on my beebs.

The seller now sells a Toastrack / grey +2 variant along with the correct cable as well (https://www.ebay.co.uk/itm/RGBTOHDMI-HD ... 635-2958-0).
I bought just the cable and hooked it up to my poor output Toastrack and the picture is stunning with none of the artefacts previously seen via the RGB to SCART connection (even though it is using the same output). I honestly can’t over exaggerate how good the picture is - it is emulator quality.
Obviously you will need to make other arrangements for sound as this is not handled but a small price to pay!

Some photos that do not do it justice:

[Jinxter]

Hi,

Thank you for the kind review Lardo, would just like to make the offer here that if anyone wants one of these I can offer them here minus the eBays fees for £55.00 if paying via paypal f&f.

UK only, but couuld make exceptions please pm.

Just pm me to confirm purchases.

CheerS