"Noise" with scart

Discursiones en general sobre el proyecto que no tienen cabida en otro foro / General discussion for uncateorized topics about the ZX-Uno project
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brunosilva
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"Noise" with scart

Mensajepor brunosilva » 13 Feb 2018, 20:18

Hi

i have a new lcd tv only for zxuno and cousins...

with vga i have a nice image... but with scart I have some "noise" running around the screen.
my tests: different boards, scart cables and also using an addon (multivideo addon) does this "noise". Also tried with different power source.

i tried now runing zxuno pcb tester v.10 and in pal i have that "noise" but with ntsc i don't.

but with bios .70, also if i choose ntsc, i get this noise... (lower bios and lower spectrum core I also have this problem)

image1.jpeg


Anyone had this problem?

Thanks

ManuFerHi
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Re: "Noise" with scart

Mensajepor ManuFerHi » 15 Feb 2018, 23:47

Is PSU, sure! try another psu or connect through a usb port for example from a laptop.

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brunosilva
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Re: "Noise" with scart

Mensajepor brunosilva » 15 Feb 2018, 23:48

Hi

already tried both :(

and both "psu" did ok when i have the zxunos in ntsc mode... :) with the test core...

ManuFerHi
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Re: "Noise" with scart

Mensajepor ManuFerHi » 15 Feb 2018, 23:56

Chineses PSU they usually show that effect in RGB mode, but not all TVs reproduce this effect. Try not chinese PSU or unpulsed current.

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brunosilva
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Re: "Noise" with scart

Mensajepor brunosilva » 15 Feb 2018, 23:57

do you have a link from an online store where i can buy a good psu?
thanks

ManuFerHi
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Re: "Noise" with scart

Mensajepor ManuFerHi » 16 Feb 2018, 00:05

brunosilva escribió:do you have a link from an online store where i can buy a good psu?
thanks


microUSB conector or plug 5.5mm x 2.1mm?

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brunosilva
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Re: "Noise" with scart

Mensajepor brunosilva » 16 Feb 2018, 00:06

well... both :)


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brunosilva
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Re: "Noise" with scart

Mensajepor brunosilva » 16 Feb 2018, 00:32

the raspberry pi charger I can get in a portuguese seller... that farnell suggest... cheaper shipping costs...

after that i will evaluate if I need the plug one...

to portugal... only those two items with shipping costs are 45€+- :) almost a new zxuno :)



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