Is the LCD screen susceptible to burn in? When I first saw the machine I wondered this as I have replaced a few LCD TVs in clubs and pubs that have had keno on them for how knows how long and are pretty badly burnt in.
LCD screens aren't exactly subject to "burn-in" like CRT or plasma (the result of uneven phosphor wear), so much as they are "image retention", which is when the crystals become polarized after displaying the same image for so long and can't "relax" back to their normal state, resulting in a ghost image. But unlike phosphor burn-in, image retention is almost always reversible over time simply by changing the image (displaying a black screen for prolonged periods is typically recommended).
With that said, I don't see how image retention will be a problem on WOZ, as there are no interface elements kept on the screen at all times - full-screen videos play during gameplay, and attract mode is always changing what's being shown.
Just throwing out there a hypothetical. Does anyone know if there is much in the way of spare parts and whether there are suppliers stocking such parts if jjp say disappear from the scene? Or are most parts b/w style parts. I for one would be looking at stocking some parts just in case supply is uncertain. Be interested to hear opinions
If JJP were to go belly up tomorrow and never produce another part again, I think the only items that would be of real concern are the driver board and the lighting boards. Most pinball-y parts are Bally/Williams or modified versions, the PC parts will be simple to buy for quite a few years, and custom plastics and metal assemblies can always have runs sourced. As much as I have disagreed with Homepin's stance on PCs in the past, I do think someone like him with circuit board replication/design experience could easily replicate the driver/lighting boards if eventually necessary.