I've not watched the video yet, but what I do with the sockets is get a miniature screwdriver, gently scrape all the corrosion off. The wet some cotton buds with contact cleaner and clean the whole socket up. Get another cotton bud, bite the tip so it goes thin, dampen it, then twist it gently around the center pin. And then you have a good clean PSU input. Check also underneath the board for signs of cold/dry/cracked joints. Quite common in these sort of areas and also on regulators and diodes.
There is a bloke around the corner from me who might sell such highly-prized spray. I'll nip and see him in a few mins once the rain's p***ed off.
Another couple of points, lads:
1) Those ROM/RAM carts are solid as a rock - I've tried everything to remove em other than TNT and brute force - I'd rather leave well alone than possibly knack em so as regards loose seating of modules, I'm leaving that particular area for now as I feel that the corrosion should be my primary goal.
2) The RF lead that is permanently wired into the internal modulator... am I ok just to snip this irritating b*stard as it serves no purpose when you have a monitor/scart cable?
Just thought I'd check first before someone comes back with....
ABOVE: I've got the sealed ROM/RAM units and they will as hell shift. I know a good tug should do it but I've tried that and they don't wanna know... rather than possibly wreck em, I'm leaving em in situ for now - just in case as I feel the corrosion needs tackling first and then all might well be dandy...
ABOVE: Separating the keyboard ribbon connector from the pins was a shit as the brown holder gets stuck against the aluminium shielding. It took some persuading to part this pairing.
ABOVE: 800s always seem to have their RF cables permanently attached to an internal modulator - screw that - it just gets in the way all that loose cable - it's unsightly and unnecessary in these days of cheap enough monitor > scart leads. I'm OK to snip it off close by, yeah, as again - it doesn't wanna come off that lug and forcing it might well cause the whole thing to part company with the motherboard...
ABOVE: These are the two big caps, Thark, back right just next door to the corroded power socket. I can't see anything wrong with them... but maybe you can?
ABOVE: These two are front right of the motherboard... again, they look OK to me but I'm no expert. Generally speaking, the board looks in very good shape other than the corroded power jack area.
...absolutely flat, buddy and I'd stake my Oric on em being the original components so they're bound to be 'pushing it' performance-wise, yeah?
There is one component that has a bulge on the top - but of course that might be intentional / designed that way, just a tick and I'll try and pin-point it in one of the pics...
ABOVE: This green component has numbers down the far side - can't quite read em - but it's located slam bang inbetween the power rocker switch (ON/OFF) and the CHANNEL select switch. Remember, I have got a power issue here... suspicious, Thark?