Strange blue issue – SNES/Spectrum

[Mizuho]

Hi, I have just gotten a new OSSC 1.7 and updated it to firmware 0.90. I can only use line2x on my TV (Panasonic TX-50EX750B) with generic 4:3, which I guess is fine, but the picture is tinted blue. Has anyone ever seen anything like this before?

I also tried my spectrum +2, but it is also blue/gray with wavy patterns, compared to the SCART to HDMI adapter I was using before, which died, as it was a cheap chinese one, which is why I opted for the OSSC instead.

https://photos.app.goo.gl/HiRTQTn55hQt7KieA
https://photos.app.goo.gl/5t9Q2bYHoPoNozAV6

Here is an image I took of the OSSC. And the second one is one I took a long time ago of how it looked on my original converter.

I did check that the red signal from pin 15 was reaching the THS ic via the resistor and capacitor and it seemed fine.

I just thought I’d try through the component too, so I tried my Wii… it’s still the same it seems.

https://photos.app.goo.gl/CtW4AiBsQfY4abx8A

Hmmmm, thought I’d try a laptop through VGA and this is actually looking decent…

https://photos.app.goo.gl/scr1nWJxBAfUSN3R8

What’s different between SCART/Component and VGA?

[BuckoA51]

I’ve never seen both the component and the SCART have that fault at the same time but first time for everything I guess. E-mail in and I’ll sort out an RMA for you.

[Mizuho]

To be honest, I bought it on ebay, so I guess I’ll just return it to him, but yeah, very strange. I was hoping to be able to fix it myself. I’m guessing it’s the THS7353, as it’s the only point they have in common before reaching the FPGA, which the VGA goes straight into.

[Author]

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