Just took delivery of one of these. Everything was in the box, except setup instructions. It has multiple sockets (VGA, BNC, HDMI etc)and al the leads to match. The power supply plug's 12 volt lead is too short but I ordered an extension for £1.99 including postage.
No arguments so far but I am using HDMI for connection to my computer and cannot seem to set it up in order to get a signal.
The supplier sent me links to two videos, neither of which explian the setting up procedure. If anyone has bought one of these and mastered the technique, please let me know.
First of all, does the monitor have loop-through inputs, (not actually hard-wired) and if so, are you plugging into the input and not the output? I've seen small monitors with input on the right and output on the left.
Is the correct input selected? Small digital monitors tend to switch between inputs very slowly. Does anything appear on the screen after power-up?
HDMI can be funny about powering up input and output circuits if nothing appears to be connected to them. Try turning on the computer first and then the monitor, and vice versa. Plug the cable in while both are off.
A random sampling of units meeting this description, shows they have no technical descriptions whatsoever. No manual to download. No list of resolutions we might expect from the serial EDID, and so on.
One unit, had the cheek to advertise 1920x1200 resolution, when the photo of the unit shows it is not 16:10 but is 16:9 and 1920x1080.
On such crapulent merch, I would plug in only *one* data cable to start, as the EDID lines may be shared.
Occasionally, a display supports only 1920x1080 and 1280x720 on the HDMI port, and that might sometimes be termed a "non-PC HDMI". On computer video cards, if no EDID is sensed, the driver selects
1024x768, 800x600, or 640x480. And if these resolutions are not supported by the display, you get black screen. It is likely in this case, the product has a scaler inside, so I'm not too worried it's devoid of conditioning on the input board.
I have a suspicion that even when we get the web page link to this carcass, it'll be documentation-free and a mystery meat.
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A person who plays with mystery meat products like this for an LCD display, should invest in an "EDID box". This is a box that sends a fake EDID to the Linux computer, the Linux computer thinks it is a real 1920x1080 device, and then by chance the signal is something the monitor actually works with.
On old Macintosh boxes, you could get a display adapter connector with DIP switches on it, and you could send "fake" Apple codes for monitor resolution selection. Which is just like EDID in a sense, but for an earlier generation based on "sense lines". It's possible even early PCs used *some* sense lines, but not the same exact setup as the Mac at the time.
But today, for manually setting up equipment, without a lot of pissing around, you'd want an EDID box. Instead of using sense lines, like in the old days, there is a data and a clock pin, and the video card end "reads" the EEPROM inside the monitor.
A cheap monitor can be missing the EDID hardware. Some "projectors" are an example of such. Even my Sony Trinitron monitor, with the five coax cables for input (RGBHV), it was missing EDID as well. I used a Mac switch dongle, to get the computer to generate a resolution the multisync Sony supported.
This one for example, it sucks up the EDID from an existing healthy monitor, then you plug the duff monitor in place of the healthy monitor, and when the other end is plugged into the computer, it is getting the serial information the healthy monitor produced. This box is way to expensive for home usage. Still, an interesting box.
formatting link
Gefen made stuff like this too, and might be used when searching for the older EDID solutions. The earlier Gefen ones might have been cheaper.
formatting link
I was hoping to find something for $50, but I guess I'm delusional. It's a pretty simple function, to be charging so much money. You can make your own with the appropriate serial EEPROM. That would be a minimal implementation.
Linux should have a "readEDID" program, and you can test that on your working monitor. Plug the duff monitor in as the "Second" monitor, and try "readEDID" on that too. If it comes back 0xFFFF style, then there might be no EDID chip in it.
On Windows, you use Entechtaiwan "Moninfo" program, and select "real time mode" and that can read the EDID and show you what it contains. Both OSes have some solution for the forensics needed.
No, this is mini-motherboard machine with an Intel core-3 processor with one spare PCIe slot carrying a TBS-6280 DVB-T2 TV card. Onboards graphics only.
Three years ago it set up with a Samsung smart TV as irs monitor. It was mothballed two years ao when we downsized.
I have just (almost) completed building furniture and so it has been reterieved from its wrapping.
The thing is, the operating system is dated and needs replacing. SWMBO likes to watch TV so I bought the mini-monitor.
Tomorrow afternoon though I should be able to test it using the TV as the govenor will be out, before re-introducing the mini-monitor.
Gosh! You went to a lot of trouble to reply. Thank you. My policy is to fight one battle at a time. Right now I am concentrating on some DIY but I will return to this in a wseek or two.
Well, I gave up on hdmi at the pc end on a tv as a monitor as it kept on routing audio via the tv and usually managed to not detect a signal. What I did as mentioned in an earlier post was get a vga to hdmI active converter, usb powered. Took the signal from the 9 pin D to the adaptor, and plugged the hdmI into it, leaving the audio lead unconnected so my usb sound card was not turned off. Then it seems to work every time. No idea quite why or how good the picture is but most sighted people recon its as good as they have seen. The adaptor is obviously made in China and bought from Amazon in one of their sales for under 20 quid. Brian
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