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Main => Monitor/Video Forum => Topic started by: amdsleite on September 06, 2020, 09:32:41 pm

Title: Anyone can help me? I can't connect my PC to a CRT TV
Post by: amdsleite on September 06, 2020, 09:32:41 pm
Hello. I have a PC with the following configuration:
- Motherboard Gigabyte B450M DS3H;
- Processor AMD Ryzen 5 1600;
- Video Card Radeon RX 570 4GB;
- RAM 8GB DDR4 3200mhz x2
My intention is to make an arcade cabinet with an image very close to the original machines. Initially I was going to purchase a arcade tube/monitor @15kHz, but due to difficulties in the acquisition, I bought a Philips TV model 20PT4331, with AV and CVI inputs. As RX 570 only has DVI, HDMI and Displayport outputs, I had to purchase a converter.
With an HDMI2AV converter the image appeared normally, although with very poor quality, but with HDMI to CVI converter the image is distorted.
I used QuickRes to reduce the PC resolution to 640x480. Soft-15KHz was not compatible with my RX 570. I also used CRT Emudriver & Tools 2.0 beta 15 (Adrenalin 18.5.1 for GCN cards) for Windows 10, 64 bits.
The drivers were installed normally, but when using Video Mode Maker, even selecting four different monitor types (NTSC CRT TVs, PAL CRT TVs, Standard resolution monitor (15kHz) or High resolution monitor (31.5 kHz)) the distorted image is the same.
Can anyone help me at least make the Windows screen appear on the TV? Now my concern is not even to have the image as faithful as possible. I will already consider it a victory to run an emulator.
Sorry my poor English, it isn't so good.
Thanks in advance.
Title: Re: Anyone can help me? I can't connect my PC to a CRT TV
Post by: Osirus23 on September 07, 2020, 12:12:54 am
Is the converter converting HDMI to YPbBr Component, or RGB? If you connect RGB to consumer YPbPr you will have sync problems like that. You may also be using too high of resolution.
Title: Re: Anyone can help me? I can't connect my PC to a CRT TV
Post by: buttersoft on September 07, 2020, 02:58:02 am
That looks kinda like 720P or thereabouts - so 45kHz on a 15kHz-capable TV

https://www.aussiearcade.com/forum/arcade/m-a-m-e-emulation-projects-and-discussion/89704-a-guide-to-connecting-your-windows-pc-to-an-sd-crt-tv-pvm-or-arcade-monitor#post1734991
Title: Re: Anyone can help me? I can't connect my PC to a CRT TV
Post by: amdsleite on September 07, 2020, 11:08:32 pm
The converter is converting HDMI to YPbBr Component. Sorry for the ignorance: are there differences from YPbBr Component to RGB in this case?
Title: Re: Anyone can help me? I can't connect my PC to a CRT TV
Post by: Osirus23 on September 08, 2020, 10:55:38 am
The converter is converting HDMI to YPbBr Component. Sorry for the ignorance: are there differences from YPbBr Component to RGB in this case?

YPbPr is what you want for your TV. I agree with buttersoft you are probably using too high of a resolution.
Title: Re: Anyone can help me? I can't connect my PC to a CRT TV
Post by: buttersoft on September 09, 2020, 07:09:27 am
To be clear, I should perhaps have stated that the link in my post above is a guide to connecting your Windows PC to an old CRT TV...
Title: Re: Anyone can help me? I can't connect my PC to a CRT TV
Post by: amdsleite on September 10, 2020, 11:04:21 pm
Thanks for the informations buttersoft and Osirus23. I will access the link above and search a little more about it.
Title: Re: Anyone can help me? I can't connect my PC to a CRT TV
Post by: buttersoft on September 12, 2020, 07:54:22 pm
Having re-read your first post, it might simply be that the adapter cannot handle a 240p/480i input. Not sure, but give the guide a read and see if anything helps.