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Vanilla are planning an update to the site on April 24th (next Wednesday). It is a major PHP8 update which is expected to boost performance across the site. The site will be down from 7pm and it is expected to take about an hour to complete. We appreciate your patience during the update.
Thanks all.
CRT madness!
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In other news I was searching for B&O CRTs on adverts and got quite excited, until I saw the chessboard floor...
https://www.adverts.ie/tv/bang-olufsen/21741697
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Something like that absolutely should be saved. Not very often you find a genuine link to childhood like that :cool:
Exactly! All of my other childhood CRTs are well gone at this stage.
I think the last game I remember playing on it was Goldeneye.
Just sent on a photo, looks to be a Philips 28PT4503/20. Ugly ass stand but they look nice enough when the stand is removed. Decent set of speakers on it.
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BrownFinger wrote: »Those philips TV were in every house.
Must have been a power city special .
The first colour TV I remember getting was a 14" Tatung off Santa.
Ah no way? There's a Power City just down the road from their house so you're probably right
My first was a 14 inch Telefunken. Got it for my birthday one year as my folks were sick of me playing my Megadrive on the sitting room TV!
Remember the excitement opening it out of its box, couldn't believe I had my own TV.0 -
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You had a trini as your first tv? La-de-dah! Started off on some high note
Managed to hold onto it all these years? That's amazing - was it ever almost destined for the recycling centre?
Yeah, came from the same Nan who bought me my first console too (2600 Junior). She had good taste :cool:
Yeah it was loaned out to another family member a good few years back, and was largely forgotten about. Some time later then they offered it back as they no longer needed it, & from there, gained 'protected status'. It now lives out in the shed, covered over, alongside a 21" crt that was the main living room tv when I was a teenager.0 -
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Anyone ever have to deal with the horror of trying to calibrate 'line gain' pots on a CRT?
These two here:
I would suggest not going near them if your geometry looks correct!
I noticed the other day while playing Alien 3, that when you go up a ladder (and the screen scrolls up) the image got oddly distorted towards the top. Like the ladder you're going up stretches when it gets to the top of the screen.
It was incredibly nauseating and is kind of subtle in a way, so you kind of see it in your peripheral vision but not so much when you look directly at it.
Surprised I hadn't noticed it before.
In the Strike games, the screen scrolls a lot in all directions, so it was even worse in that. You spend a lot of that game scrolling up diagonally, so you're getting these strange diagonal stretches in your peripheral vision.
Decided to try to figure out what was going on.
Basically if you think of the whole screen as a grid with a load of squares, you want all the squares to be of equal size, both vertically and horizontally for correct geometry.
Line gain lets you resize the squares across the screen.
So the issue I was having (could see it when I bought up a test grid) is that the vertical line gain was set to give the top squares on the screen more vertical size than the middle ones.
So when a sprite traveled up the screen, it was being stretched slightly when it hit the top third.
You'd think this was an easy fix, but it's very difficult.
The line gain vertical pot doesn't just resize all of the squares uniformly. If the pot is all the way to the right, more of the top squares are bigger and if you go all the way to the left, the bottom squares are bigger - so you've to fiddle with it somewhere in the middle to get it uniform across the screen.
It's extremely hard to do though as you've to measure by eye (I tried with a ruler, didn't work!). Sometimes it might look right static on a grid, but when you put a scroll test on, you're still getting stretching. Turn the pot and get the top part looking right and then the bottom of the screen is out.
And that's just vertical configuration, there's horizontal too!
After about an hour sitting in front of the screen with a test grid and scroll tests at varying speeds, I got it spot on.
Not joking though, I actually felt like being ill at the end of it, watching vertical scroll tests with an incorrectly set up vertical line gain does strange things to your brain if you stare at it that long!0 -
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I fixed another issue with this BVM last night. Well, kind of fixed..came up with a really workable solution that fixes all it's problems for a gaming session.
Not sure if people remember, but I'd a purity issue that I could just not get rid of. Would fix it with a magnet, but then as soon as the monitor degaussed, the problem came back. Tried adjusting purity rings but that didn't solve it either.
I think there's actually something up with the degaussing coil itself. For some reason it thinks incorrect purity is the correct thing to degauss to.
Solution! (after what must be nearly 2 years of trying to fix this!)
There's a pull out drawer on the bottom of the monitor. I took the plate that covers the pots off to access underneath. Originally just wanted to have a poke around but then this idea occurred to me.
I stuck a rare earth magnet it to the rail inside this drawer. So that the magnet would pull out when the drawer pulls out, and then push in when the drawer pushes in.
Put the plate cover back on away we go.
When the drawer is pulled out, there's no magnet impacting the monitor. When you push the drawer in, the magnet does it's work and changes the purity.
The solution?
Power the monitor on with the drawer pulled out, it degausses on boot as normal and the purity issue comes up. (Really bad discoloration on the bottom left and a bit on the top right)
Push the drawer in - magnet does it's work, purity issue solved!
It's more a hodge podge patch than a fix, but I can now play games without cursing the impurity issues under my breath 0 -
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