Question Radeon RX 460 Graphics Card - 3 Monitors

[Monito77]

Hi, I've had my RX460 for a while. Initially I set up for 2 monitors (Samsung CF27F398). As Displayport on the RX460 did not work I used the HDMI on RX460 and the HDMI on the motherboard. This worked fine for my needs. Now working from home, I'm trying to setup a third monitor a Sony SDM-P234 I found in the attic. I've connected this by DVI to the RX460. The monitor is recognised in Display settings and I can arrange the 3 monitors and the mouse moves onto the new display, but the display remains black. It does not seem to complain about a lack of input.

I've tried connected to the DVI port on the motherboard, no change, I tried connect all monitors to the RX460, but then the Displayport does not work and the new monitor is still dark.

Any thoughts?

Thanks
Monito

 

[popatim]

Will the Sony display it's own menu?
No - Shine a flashlight into it, if you can see a faint image then the backlight is dead. repair, replace, or recycle it.
-- Still no - repair,replace, or recycle
Yes - try these:
- make sure you are using a DVI-D compatible cable. The Sony is not capable of analog DVI input
- manually setting the input to match the port you've connected it on. The SONY has a dedicated input button.