Search found 6 matches
- Wed Jan 31, 2024 12:14 am
- Forum: ZX Spectrum Lounge
- Topic: 48K ULA CPU clock signal on pin 32 - waveform incorrect?
- Replies: 2
- Views: 2038
Re: 48K ULA CPU clock signal on pin 32 - waveform incorrect?
Thanks for that link, i'm going to read up on it. The HDMI convertor was recommended to me by someone who has used it with success with their Spectrum. I've been really struggling to get a way to have a stable picture on a TV. I shall preserver with my issue 2 Speccy and try all i can to get a stabl...
- Tue Jan 30, 2024 3:01 am
- Forum: ZX Spectrum Lounge
- Topic: 48K ULA CPU clock signal on pin 32 - waveform incorrect?
- Replies: 2
- Views: 2038
48K ULA CPU clock signal on pin 32 - waveform incorrect?
I've been having issues with my 16K (upgraded to 48K) Speccy. I did an S-video mod on it and as my TV doesn't accept S-Video via SCART i bought a S-Video/Composite to HDMI convertor. But i've had issues with it not syncing properly, it would sync for a second at most and then the picture would jump ...
- Mon Jan 01, 2024 5:50 pm
- Forum: Hardware
- Topic: 48K Issue 2 - S-Vid mod colour issue
- Replies: 10
- Views: 1616
Re: 48K Issue 2 - S-Vid mod colour issue
As I see from a search that both of your TVs have a rear HDMI socket an alternative would be to use an s-video to HDMI converter. All my Spectrums have the same s-video mod as yours and I've always found that the Tendak converters to be very good, though that is no guarantee. Double check that the ...
- Mon Jan 01, 2024 5:47 pm
- Forum: Hardware
- Topic: 48K Issue 2 - S-Vid mod colour issue
- Replies: 10
- Views: 1616
Re: 48K Issue 2 - S-Vid mod colour issue
So, that 'adaptor' is just a box with connectors and wiring (wires or a PCB). It doesn't have any active electronics. Mark Correct i've had the shell apart and it is a bunch of wires, a switch, the SCART plug and a circuit board with the other sockets on. All (well as far as I am aware) SCART socke...
- Mon Jan 01, 2024 3:59 pm
- Forum: Hardware
- Topic: 48K Issue 2 - S-Vid mod colour issue
- Replies: 10
- Views: 1616
Re: 48K Issue 2 - S-Vid mod colour issue
Tell me more about this "adaptor" and please post a photo of it. Also, on the TVs that you have tried, do they actually support S-Video signals on their SCART inputs (not all SCART input sockets do) and have you tried selecting different "AV" inputs for the SCART AV input. Auto selection of S-Video...
- Mon Jan 01, 2024 2:13 am
- Forum: Hardware
- Topic: 48K Issue 2 - S-Vid mod colour issue
- Replies: 10
- Views: 1616
48K Issue 2 - S-Vid mod colour issue
Hi all A bit of background to my ZX Spectrum, it's a 16K issue 2 upgraded to 48K in '83. I've had it since Xmas '82. I did a straight forward composite mod on it by removing the input wire and the +5v wire for the RF modulator from the circuit board and then taking the composite signal via a wire st...