submitted 11 months ago* (last edited 11 months ago) by Salcie@feddit.fr to c/retrocomputing@lemmy.sdf.org

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hi there, wondering if I could get some help here:
I have an old CRT tv black and white, I've plugged it to an HDMI/composite to RF modulator HDM69

It used to work some time ago but can't find out why it doesn't anymore

When I don't plug anything it seems alright (but not sure it really is) but as soon as I plus HDMI or composite my tv doesn't display things right
Notice that it works on my modern tv
Here is a video showing what's happening video

Any ideas ? <3

PS: the horrible noise is my vaccum cleaner

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[-] cmnybo@discuss.tchncs.de 3 points 11 months ago

Some old tvs and depending on the electrical circuit they are plugged in dont like when high powered devices are running.

It's not really an issue with high powered devices, it's an issue with brushed motors that arc and produce loads of RFI.

[-] young_broccoli@lemmy.dbzer0.com 1 points 11 months ago

TIL. Thanks! ^.^

this post was submitted on 20 Aug 2025

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