Strange LCD monitor problem

[NiHaoMike]

I have a 22" Viore LCD monitor (teardown: https://www.eevblog.com/forum/general-chat/don%27t-turn-it-on-take-it-apart!-then-turn-it-on/ ) that works great with VGA, but try to use either HDMI input and the image goes off the screen on all 4 sides and the image quality is terrible, making it mostly useless. I've tried with several source devices (several PCs and a tablet) and all have that problem, and at least one of the sources works perfectly fine with another 1080p monitor.

Any ideas why that's happening? I tried overriding the EDID with one from a working monitor but that doesn't seem to do anything. 1080p works perfectly with VGA, so the panel (a really nice S-MVA one, at that) is in fact capable of 1080p.

[G7PSK]

Do you need the right software for it, some monitors I have come with a software CD and only work in basic mode without the installation of the drivers and software.

[NiHaoMike]

The monitor never came with a CD. Also, the VGA works fine, but the HDMI acts as if the monitor is always zooming in a little.

[Monkeh]

The monitor never came with a CD. Also, the VGA works fine, but the HDMI acts as if the monitor is always zooming in a little.

That's because it's a TV, not a monitor. Go check the aspect ratio setting.

[NiHaoMike]

I did check the aspect ratio setting, it wasn't it.

[Monkeh]

That's cheap stuff for you. If no option in the menus works, see if your video driver will let you configure overscan.

[NiHaoMike]

I could "fix" the zoom issue by setting the resolution a little lower, but that does nothing for the image quality problem. It does give an impression that they were trying to cheat by using a panel that doesn't really do 1080p, but the fact that 1080p through VGA works perfectly means that's not the case. That doesn't help much when I have a few 1080p sources (a tablet, a FPGA board, and a few other gadgets) that only have HDMI output.

[metalphreak]

+1 for overscan setting. TV would be expecting a PC connected to VGA thus no overscan. On HDMI it would be expecting a set top box or something, thus it has overscan turned on. If there's no menu option for it, that's pretty rubbish

[SeanB]

Look on the internet for the service mode, where you will possibly find a non user mode accessible overscan setting.

[RJSC]

I've got an even stranger one: The monitor only has a VGA port, yet it is an LCD.

When it is displaying the picture without the overlayed OSD menu, all the picture has a green tint.
When you pop the OSD menu the background picture (from the input) returns to the correct color. Once you leave the OSD menu, it returns to the green tint.

At first I though It was a cable or analog circuitry problem on a color channel, but since it displays the correct colors when displaying the OSD menu I'd say the firmware got magically corrupted: noting to do.

[T4P]

I've got an even stranger one: The monitor only has a VGA port, yet it is an LCD.

When it is displaying the picture without the overlayed OSD menu, all the picture has a green tint.
When you pop the OSD menu the background picture (from the input) returns to the correct color. Once you leave the OSD menu, it returns to the green tint.

At first I though It was a cable or analog circuitry problem on a color channel, but since it displays the correct colors when displaying the OSD menu I'd say the firmware got magically corrupted: noting to do.

Well some old LCD's have only VGA's, definitely the cheaper ones

[RJSC]

I've got an even stranger one: The monitor only has a VGA port, yet it is an LCD.

When it is displaying the picture without the overlayed OSD menu, all the picture has a green tint.
When you pop the OSD menu the background picture (from the input) returns to the correct color. Once you leave the OSD menu, it returns to the green tint.

At first I though It was a cable or analog circuitry problem on a color channel, but since it displays the correct colors when displaying the OSD menu I'd say the firmware got magically corrupted: noting to do.

Well some old LCD's have only VGA's, definitely the cheaper ones

It seems I was not so clear. Sorry.

The strange thing is the green image problem when not displaying the menu., not and LCD monitor with VGA only. Even last year (last time I've checked) the cheaper ones were VGA only.

[Monkeh]

VGA only displays are still around. It's annoying, because people will continue to buy them to save £5, and VGA will continue to hang around for years to come. It's time it died out.

[NiHaoMike]

+1 for overscan setting. TV would be expecting a PC connected to VGA thus no overscan. On HDMI it would be expecting a set top box or something, thus it has overscan turned on. If there's no menu option for it, that's pretty rubbish

Any idea why they would cripple it on purpose? It seems like they're spending more on the scaler to make it worse.

[zaoka]

Is it possible to upgrade firmware of the monitor? (see if there is USB on the back of the monitor)

[NiHaoMike]

There is a USB port, but I haven't found a firmware update for it. (It's the LED22VF60.)