I have a Dell 2407WFP monitor.
Over the last few weeks it has developed several horizontal lines; thickness is less than a hair's width. The lines slowly get longer. The two longest are now about 5cm.
They are not dead pixels or any other graphics anomaly, but physical raised lines with a corresponding tactile 'bubble' on the surface screen.
Apart from the weird horizontal lines, the monitor has not had any other issues.
Has anyone encountered this before? If so, was it a long time before the monitor died completely?