What cable do you have now? Do you have a link?
The cable is a Japanese made product called HDVG20-114BK.
It has an MCU within the HDMI side plug which draws power from the HDMI port and the vendor said it was designed for CATV and satellite tuners, so it may expect to draw more power than the devices I tested it with provide.
And this will happen over and over and over and over and over again UNLESS I can find a cable that is guaranteed to work with the Pi. Nothing else will do, I have no cycles for nonsense. Shopping by trial and error is about the most horrible shopping experience imaginable.
I do not fault the cable, I fault the Raspberry Pi foundation for not imposing a very strict policy on their resellers that they must stock all the basic official accessories necessary for a beginner to get the device working out of the box without any kind of trial and error whatsoever. A reseller that only wants to sell boards should never be authorised for a product like the Pi. And neither should companies like Pi Hut who claim that they lost oodles of parcels in Japan which is a blatant lie.
The problem is very clearly when you have to buy different pieces from different sources. When a problem occurs, none of those sources will be responsible, you are stuck with the mess. Since I am in Japan, my shopping options are extremely limited because retailers in Europe and the US seem to have some kind of phobia against shipping to Japan. But they do complain a lot about the trade deficit they have with Japan. If you people refuse to ship your products to Japan you shouldn't be complaining about any trade deficit. It's ridiculous.