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Av/ RCA mod help needed
Posted: Sat Nov 22, 2014 5:19 pm
by Ramshorn
Can anybody advise me on how to perform a modification to the tv output socket so an RCA cable can be used, as my picture is quite grainy and unstable. I have done such a thing on a 48k spectrum but not a QL, I'm thinking its probably the same procedure? Thanks.
Re: Av/ RCA mod help needed
Posted: Sat Nov 22, 2014 5:54 pm
by dex
No such mod is necessary, as the composite PAL video signal is already present on the "RGB monitor" DIN connector.
Just use pins 1 and 2.
See
http://www.dilwyn.me.uk/docs/hardware/m ... ctions.jpg
Re: Av/ RCA mod help needed
Posted: Sat Nov 22, 2014 7:25 pm
by Ramshorn
Thanks for reply, problem is I don't have a suitable monitor cable or monitor. So not quite sure what you are suggesting?. I wanted to use the tv output socket, it works but the picture isn't perfect.
Re: Av/ RCA mod help needed
Posted: Sat Nov 22, 2014 7:51 pm
by XorA
Just put a jumper wire from pin 1 of RGB connector to center of modulator plug removing the resistor first.
EDIT: typoed the pin previously!
Re: Av/ RCA mod help needed
Posted: Sat Nov 22, 2014 7:52 pm
by dex
I thought that You mean this 48 kB ZX Spectrum video mod:
http://brianhoskins.uk/spectrumcompositemod/
This is not necessary on the QL.
Re: Av/ RCA mod help needed
Posted: Sat Nov 22, 2014 8:04 pm
by Ramshorn
Loving the jumper wire idea I will do that, sorry for being a noob but do I need to do anything with pin 2
Re: Av/ RCA mod help needed
Posted: Sat Nov 22, 2014 8:30 pm
by XorA
No modulator case is already connected to ground.
Re: Av/ RCA mod help needed
Posted: Sat Nov 22, 2014 8:35 pm
by Ramshorn
That's great, I will try that and let you know the outcome
