I used to play around with old tv's as a kid. When they were beyond repair i would experiment with them. One fun thing was to break the little dab of glas at the end of the tube it was melted shut once the vacuum was established during manufacture. Breaking it would send an inrush of air into the tube mostly at the center of the screen causing the inner layers to be blasted. Looks like the same happened to your tube. A fun thing to do is to carefully break the back of the tube (with a broomstick and goggles) so you can put a bulb in there. I had an old monitor on top of a old curly lamp stand. The green phosphorus looked like a galaxy of stars with all the pitting going on :)

The Big Time program might be on the other side of the cassette tape.

For the 4000-Series PET: You can use the 12" tube of any amstrad GT65 green monitor! It fit's perfect, you only have to change the glass tube and use the other parts from the broken one in the PET. ;)

Your robot game was trying to draw the rooms screen using 80-column mode, found on most later PETs.

The "spot" on the CRT actually means that the CRT tube has lost its vacuum, and the phosphor inside of the screen area was oxidised and fell off. Probably the PET was dropped and the neck of the CRT has been broken off. So yes, you will need a replacement CRT which are hard to get, and replacing them *must* be done by an experienced engineer, (TV repair man) as its not easy and can be dangerous!

@vintagegeek

2 жыл бұрын

Yes, we're lucky that we've found a local TV repair expert with many years of working with CRTs...will definitely be leaving that replacement to him if we can get the part!

@mariusberger3297

Жыл бұрын

@@vintagegeek if you can get your hands on a 12" monochrome amstrad monitor, the tube should be compatible. I've swapped one into a broken PET before with success

@mattruddick8919

Жыл бұрын

the phosphor can be sucked off when a lost of vacuum is fast

I forgive Vintage Geek for not knowing what a CRT going to air looks like. Some of us know from decades of CRT equipment repair. Most have no clue because, outside of a break, they don't look like that PET when they fail.

The word PET also means bad or worthless in the Dutch language although it isn't used much nowadays. So a computer called 'PET computer' was quite funny then in the Netherlands.

11:09 Games seems to require an 80 col display that later PETs had. 8032, Super Pets etc. Unlucky, since most games were written for the 40 col PETS and they don't work well on 80 Col PETs

I have the opposite experience of you with the PET -- I got to play with one as a kid, but don't have one now. I got to play one of those artillery games where you enter the angle and number of 'bags of gunpowder' and the computer draws parabolas to try to hit your target one afternoon in the early '80s when my Dad brought me in for 'take your kid to work day' and they sat me in front of one of those PET 2001s with the calculator keyboards. By that time I already had a CoCo 1 at home, and even its 'chicklet' keyboard was superior to the original PET's. I now have a TRS-80 Model 1 and a couple Apple 2es, which are reasonable stand-ins for an original Apple 2. I have a couple C64s, but I'm guessing that the PET will be my hold-out for a 1977 Trifecta. I wonder if you need 80 column hardware on the PET to get the PETSCII to look right in 'Voyager 1'. I know that later PETs had an 80 column mode, at least as an option. The CoCo wouldn't have built-in 80 column text until the CoCo 3 in '86, but it did have a version of the Avalon Hill Voyager game. On the other hand, it had actual graphics, so the maps may have been drawn differently. The CoCo version of the game is available on the Color Computer Archive, so a side-by-side comparison would be fun to see. Good video. I'm enjoying your content.

0:31 wow! I had that robot as a kid and a COCO3

I remember seeing it in Airwolf and in Star Trek Wrath of Khan. The sound that first PET was making sounds like a bad flyback. May end up replacing that too.

Kid: "Mom, can we buy Star Raiders?" Mom: "We have Star Raiders at home" The Star Raiders at home: 8:05

This is definitely an AAA-grade channel. I'm sure it will hit 6 digits pretty soon!

A new subscriber you have

Ah, forgot it in my last comment: If the drive says "BAD DISK" it may be running to slow/fast! Adjusting these drives is easy, there is one potentiometer on the backside of each drive and you need an app for your mobile phone which lets the flashlight flash in the right "speed" (300 revs/min, I think). And: Don't forget to replace the net-filters in these computers and the disk-drive! They will go BOOOOOM for shure after a while. ;) You don't need to put a new filter in it- just throw it out and connect the wires, that's it. ;)

Excellent video! Could you provide the listing of the squiggles program or when we can find it?

@vintagegeek

2 жыл бұрын

Thank you! Here are our scans of the Squiggle program: Part 1 - drive.google.com/file/d/1FcC3H6AbhvlnistUjxdNXW0n2VNqUKKY/ Part 2 - drive.google.com/file/d/1xJc5fEDxHLk8rINhUydk2YPw5BEaNf5_/

@RudysRetroIntel

2 жыл бұрын

@@vintagegeek fantastic and thanks

They are not quite usefull as we all know, but they look great! I'd like to have one as remote terminal for my Raspberry Pi that I use for day to day computing.

that computer pet screen looks like black paper

Can Commodore "2001" series accept linux?

@that_guy_civi

Жыл бұрын

Of course not.

Voyager-1 may be a 80col game, not 40 or 20? looks like its just wrapping around.

@vintagegeek

Жыл бұрын

Someone else had also mentioned that as a possibility and it would make sense. We hope to get a new CRT for the broken one and I think that one is 80 column

@skeezixcodejedi

Жыл бұрын

@@vintagegeek I don't recall if the 4032 and 8032 had any differences besides monitor; ie .. how would the mobo know its to render in 80col mode? is it a different firmware? Might end up having to flash or obtain a ROM .. Somethign to google or ask in the Commodore forums :) Whereas I just now fired up my old Atari STacy and it worked, but smoke started coming out the side, so I forsee a cap replacement solder hunt soon.. sigh

i see wrinkles on the screen is made of paper?

@vintagegeek

Жыл бұрын

What you’re seeing is the anti glare screen that some previous owner added to this machine