Cool! I wish the thrift stores where I live had old computers. The oldest ones you can find are Pentium 4's 775 socket :S
I remember that I found an old desktop (dell dimension 3000) in the trash. I only saw it because it still had the power cord attached. I took it home, booted it up, and it still had all the info on it. It only worked for 2 days, then the HDD crashed, and the cd drive didnt work so I couldnt reinstall windows At least I got 2gb ram and a pentium 4
I got some Pentium 2 - 4 and some AMD desktops in my loft ranging from skeletons to working-ish (IIRC). You can have any I can find if you want. They're just going to get junked for parts and thrown out otherwise.
The inner-most tracks of the drive are generally used last, and there-for at the end of a partition. The outside of the drive is the fastest (HDD's spin at a constant RPM), as more data passes under the read/write head on the outside of the drive, than on the center of the drive, where the track circumference is much much less. This contrasts a CD which starts on the inside 1st, ending on the outer-most tracks.
Got the cap out today, as a couple of you said it does indeed have markings on the other side. Best way to get a view of it was to just take it out. its got a pretty big bulge on it so probably worth replacing anyway. Managed to find another nichicon cap the same size and spec on ebay so went ahead and ordered that. If all that doesn't fix it I'm not really sure if I will go much further with it as I've not really worked on anything like this high voltage and complicated before. My research has also revealed that these monitors have a habit of blowing up like fireworks so they had free out of warranty repairs and I think a recall back in the early 90s. These were still in use until 2015 in my high school science room so I'm guessing they would have had a few fixes over the years, seems like there is some odd solder jobs here and there on the board so that would explain it. (fun? fact my keyboard died right after typing that, OS keyboard is slow ;-; )
High voltage is fun, I got zapped by 400VDC from a filter cap I thought was discharged in my little Eagle SA-100 tube amp. Let me tell you, DC hurts a hell of a lot more than AC. Do you have a schematic for that monitor? I'd love to have a little looksie at it.
Yeah that wouldn't be fun. Something hit me while I was taking out the cap actually, was about as mild as it comes but I'm guessing it was just some left over charge (discharged it by bridging it with a pair of pliers on each leg, maybe not the best way to do it..) I wish I had a schematic lol. I've did a good bit of looking for service manuals and all I've been able to find is the user manual which is just basic operations. There is one of two sites that claim to have a service manual but its behind a pay wall. The only thing I've been able to find that is anymore informative than "they explode" is that they can have faulty switches and from what I can gather the thing that causes catastrophic failure is a capacitor further into the monitor marked as C419 and that there can be issues with the linearity coil (at least in that particular screen) This is basically the only post I could find in a few hours that was even a bit technical.
Ah yes the "Give us money for a non existant schematic" scam.. Fell for that once, never again... While you have it apart you might want to just have a good look at all the solderjoints on the board, particularly around any IC's, connectors and anything big, just give them all a little touch up with some fresh solder. Bad joint's on connectors and IC's are the biggest problem with old CRT Displays. They crack make bad connections cause excessive current draw and intermittent problems. Another thing that might be worth doing is getting some contact cleaner and spraying the controls and such. I like to use Servisol 10, you can get it from Maplin's for a fiver.
Speaking of which, I recently zapped myself on a computer PSU. Burnt my kidneys. Yea, that was a fun couple of weeks... About to do that again when I open the supply in the PowerMac.
Ouch.. I remeber the voltage reading of the heatsink of one power supply I had apart to replace a bulged cap at 1,000ish volts. I always tend to make sure to discharge any big resivior caps with a resistor, I was just in a such rush to repair my amp that it completely slipped my mind annnnd ZAP. Followed by a distorted yelp that sounded akin to a manatee orgasming and a select choice of curse words.
What a revolting development that was! Caps can give you a shocking revelation, if you're not at full wit when you're working around them Though with that said I did catch some wall-power when I leaned on a computer power supply that was plugged in but the case was off, I wasn't the best of conductors at the moment, but I surely did get quite a tingling. My response was "Ahhhh !#$% it bit me". IIRC I bumped the large heatsinks with the bottom of my forearm, on an antec 350watt unit that had a damaged enclosure, hence the lid was off of it for working. Hey atleast my bones didn't light up with an alternating on/off phase like in the cartoons of old.
Did somebody say schematics? i need to find a way to scan this book in and have the words detected, so its not just pictures.
I would wonder why someone hasn't done this already. Pretty sure you can do that in PDF or something like that?
Ive tried a couple programs, and have had no luck with getting them to recognize the words. In other news. I found its about 15 bucks for a new 4th gen ipod touch screen, and about 15 bucks for a new battery for my dead phone. I will need a new battery for ipod too however. edit ipod looked like this. Its completly borked now though. Dont ask what happend.
What happened???? OK OK I had to ask, either you're a big dude and sat on it (OK OK that's mean, but I am only teasing ya'), or you ran it over. There's a market for screens in these phones for just about any phone, is usually replaceable. There should be OCR (Optical Character Recognition) software out there. There's also documents that support graphics.
Turns out my iPhone 7+ outdid my laptop in Geekbench4 both in single and multicore. What that would mean for real life things like gaming? Could the phone run BeamNG if it had Windows? Laptop(up^) Phone(down)
just another rant on desktop icons on my multimonitor seup, like if I drag something onto a desktop on a different monitor I don't want it to disappear and etc because I don't have the time to find it, like why since I changed align to grid off
