Chip info reqd: MR9736-002 CRT controller?

Hi folks, The restoration of the STC Executel 3910 I mentioned the other day continues with picture help from another collector who bought one at the same time I did. I've got it powering up and the tiny monitor is trying to display something but the horizontal hold has gone so I'm suspecting dry joints given the state of the back of the monitor board and the microcassette drive next to it when I opened it up for the first time. It's been cleaned and the leaky battery removed since then, fortunately there's no trace damage from the alkali. The display board is powered by the chip in the subject line and neither myself or google has heard of it. It's a 40 pin DIP that doesn't seem to be pin compatible with any CRTC I'm aware of. Anyone? -- Adrian/Witchy Binary Dinosaurs creator/curator Www.binarydinosaurs.co.uk - the UK's biggest private home computer collection?