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The_Franz posted:there used to be a couple of places that still rebuilt crt tubes, hawkeye in the us and racs in france, however both closed their doors in the last decade. i think a lot of the equipment wound up at a tv museum somewhere in ohio. the process is neat to see this guy is an rear end in a top hat, lol "so that drill for the glass, is that diamond?" "NO!"  "it's TUNGSTEN!"very cool skill but that's a classic greybeard grognard right there
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Oct 16, 2021 20:32
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| # ? Mar 20, 2025 23:14 |
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this guy on youtube does cataract repair on old crts https://www.youtube.com/watch?v=OLKQFTM28lU and has a cool tube restoration machine that I have no idea how it actually works https://www.youtube.com/watch?v=druE54WK4zE
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Oct 16, 2021 20:40
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i still have the original 14" crt that came with my 486 and it still works fine the concave screen, slightly fuzzy pixels, and headache-inducing refresh rate all provide some nostalgia, but if/when it breaks i'll probably just give it to ewaste and use a vga lcd instead
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Oct 16, 2021 20:56
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polyester concept posted:this guy on youtube does cataract repair on old crts FYI, while Shango knows his stuff wrt CRT TV restoration, he's also prone to occasionally interject random racist and transphobic comments/"jokes" into his videos. He doesn't do it on every video, but if you watch enough of them you'll eventually run into one where he does. He's also against COVID lockdown measures though I don't think he's a full-blown antivaxxer.
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Oct 16, 2021 21:14
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concave screen? wtf
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Oct 16, 2021 21:26
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i wondered about that too but i'm assuming they just meant convex or perhaps they live inside the tube
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Oct 16, 2021 21:26
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oh if it's just a mistake that's boring. i was hoping for some weird rear end screen type id never seen
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Oct 16, 2021 21:30
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concave but from the other direction
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Oct 16, 2021 21:37
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Mr.Radar posted:FYI, while Shango knows his stuff wrt CRT TV restoration, he's also prone to occasionally interject random racist and transphobic comments/"jokes" into his videos. He doesn't do it on every video, but if you watch enough of them you'll eventually run into one where he does. He's also against COVID lockdown measures though I don't think he's a full-blown antivaxxer. sounds like a typical out of touch boomer
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Oct 16, 2021 22:23
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Achmed Jones posted:concave screen? wtf It's like con carne, it means "with cave", which is probably where it was dragged out of from 30 years ago.
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Oct 16, 2021 22:57
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That Hyppönen should eat faeces and die.
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Oct 16, 2021 23:52
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polyester concept posted:sounds like a typical out of touch boomer in the bits where actually see him, he's not that old
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Oct 17, 2021 00:08
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The_Franz posted:in the bits where actually see him, he's not that old Yeah, when he's on that poo poo he really comes across more as a burned-out Gen X libertarian griping about how you can't make those kind of jokes anymore despite just having made them.
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Oct 17, 2021 00:11
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yes shockingly people younger than boomers like transphobic and homophobic "jokes" and libertarian bullshit. see: tech, anyone who likes dave chappelles recent special
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Oct 17, 2021 02:37
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Sagebrush posted:i wondered about that too but i'm assuming they just meant convex a little of column A a little of column B
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Oct 17, 2021 09:35
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eschaton posted:I know a bunch of people who work on CRTs in the retrocomputing scene, they’re not that bad, you just have to know how to discharge them and work with them safety (one hand in your pocket, tools made of insulators, that sort of thing) i'm got a Nanao MS2931in an arcade machine and the convergence is out on the corners. I know i could fix it by moving the little magnetic strips on the neck around but even that scares me. it's also got the black goop problem (potting epoxy coming out of a component) which affects these screens which means it only has so long to live anyway.
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Oct 17, 2021 12:05
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i've got a commodore 1084 that i keep because it has a nice picture and all the inputs i need - composite, s-video, scart rgb, and cga ttl. shame they never made a 17" or 19" version though  sometimes i look at PVMs on ebay, but they always sell for too much, or are models that don't do what i want Sweevo fucked around with this message at 17:36 on Mar 8, 2022 |
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Oct 17, 2021 13:13
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polyester concept posted:it was probably as glamourous as being a computer janitor, but you could probably make a decent living running an electronic repair shop in the 70s and 80s. now all you see is the places that will fix your phone screens.
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Oct 17, 2021 18:07
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ive been bouncing around the idea of running World's PIckiest Repair Service. Like, i only want to do re-cap jobs on a stereo that you got in pops' will, stuff like that. ive got scopes, fluke DMMs, couple sig generators. Really all i'd need to pick up is a good quality solder station (i keep buying cheap $29 setups and getting disappointed) and figure out how to actually run the biz. I wouldn't be trying to Make Money or anything but I would charge a pretty premium rate - though i would be honest with the pricing. Thinking like an upfront non refundable diagnostic fee would be in play, and if the fix took less than 15 minutes i wouldn't charge any labor. I'm not about to try to hit somebody for $129 because I found an unplugged wire inside the chassis
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Oct 17, 2021 18:14
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lol why on the cheap solder stations? just get that hakko fx888 and be done with it. of youve bought more than 4 its already worth it.
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Oct 17, 2021 19:04
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Jonny 290 posted:ive been bouncing around the idea of running World's PIckiest Repair Service. Like, i only want to do re-cap jobs on a stereo that you got in pops' will, stuff like that. ive got scopes, fluke DMMs, couple sig generators. Really all i'd need to pick up is a good quality solder station (i keep buying cheap $29 setups and getting disappointed) and figure out how to actually run the biz. I wouldn't be trying to Make Money or anything but I would charge a pretty premium rate - though i would be honest with the pricing. Thinking like an upfront non refundable diagnostic fee would be in play, and if the fix took less than 15 minutes i wouldn't charge any labor. I'm not about to try to hit somebody for $129 because I found an unplugged wire inside the chassis I have a really sick quadrophonic receiver that the right channel board is hosed on. Cant find anyone local to fix it. Got it from my dad. Help me.
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Oct 17, 2021 21:33
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Fanged Lawn Wormy posted:lol why on the cheap solder stations? just get that hakko fx888 and be done with it. of youve bought more than 4 its already worth it.
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Oct 17, 2021 22:33
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obeyasia posted:I have a really sick quadrophonic receiver that the right channel board is hosed on. Cant find anyone local to fix it. Got it from my dad. Help me. im in denver zip 80214. if you wanna get a shipping quote, scream and wail at the number, and then decide to mail it to me ill try to fix for free. i'll at least diagnose
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Oct 17, 2021 23:13
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does it have a quadrophonic 8-track player with a copy of Quadrophenia permanently inserted? because every quadraphonic receiver I’ve ever seen has had that too
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Oct 17, 2021 23:39
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eschaton posted:does it have a quadrophonic 8-track player with a copy of Quadrophenia permanently inserted? in some parallel reality the internet is much worse and we all carry little bags of high res audio cartridges and i want to live there
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Oct 18, 2021 00:33
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obeyasia posted:I have a really sick quadrophonic receiver that the right channel board is hosed on. Cant find anyone local to fix it. Got it from my dad. Help me.
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Oct 18, 2021 02:51
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KOTEX GOD OF BLOOD posted:there is a repair shop in mass that does this kind of thing, they are all nuts because of course I was going to recommend this same place cause I have suspicion that we both know who it is. Guy knows his stuff but yea. Every time i’ve been in there I got into a half hour conversation with him that would go on all day if i didnt just walk out. They are super nuts and extremely opinionated but dang if my receivers aren’t in tip top shape after getting a tune up. I am legit screwed when that dude stops doing his thing.
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Oct 18, 2021 03:43
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yummycheese posted:I was going to recommend this same place cause I have suspicion that we both know who it is. Guy knows his stuff but yea. Every time
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Oct 18, 2021 04:03
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yea its that guy. his prices are kinda high. but the caveat is that you can get it on ebay and have it show up broken or you can slightly over pay him for a piece he has all tuned up. On the other hand one of my nicest receivers I found at goodwill.
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Oct 18, 2021 22:15
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Jim Silly-Balls posted:going to prison for mishandling CRT recycling. Been thinking about this.
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Oct 19, 2021 00:34
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i fixed my tape deck. it was squealing and the recordings were speeding up and slowing down and the left channel was louder than the right on the recorded tape. the squealing was from a dried out bronze bushing on the capstan motor, and a couple of drops of 3-in-1 quieted it down instantly. i ran it for a couple of hours facing upwards to get the oil all nicely distributed. oiled all the other spinning parts too. the weird speed was either because of the capstan bearing, or because the belt that drives the tape counter had completely melted into what looked like black urethane glue and that poo poo was all over the tensioner gearing. i cleaned it all off with windex in an ultrasonic cleaner and put it back together. i replaced the tape counter belt with an elastic band from some green onions. good enough the left channel thing i haven't quite figured out the cause of yet. maybe a dried out capacitor? but i was able to compensate for it by adjusting the left channel recording level trimpot, which is clearly marked on the lovely clear circuit board inside. that'll work for now. now i can record mixtapes of modern music to play on my car tape player for a level of irony most hipsters can't even hope to attain. billie jean x billie eilish Sagebrush fucked around with this message at 00:45 on Oct 19, 2021 |
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Oct 19, 2021 00:43
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what’s wrong with the left channel, is it just softer for unknown reasons?
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Oct 19, 2021 02:42
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could be the heads need realigned
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Oct 19, 2021 03:03
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Sagebrush posted:i replaced the tape counter belt with an elastic band from some green onions, which was the style at the time…
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Oct 19, 2021 08:55
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Oct 19, 2021 13:07
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IME CRTs are not worse than working on tube gear with big reservoir caps 
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Oct 19, 2021 17:14
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I won't gently caress with those either! But you're right.
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Oct 19, 2021 17:17
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I mean just drain caps and the tube via a 10W 100 ohm resistor, then check for potential with your voltmeter. If you want to be extra safe, wait 10 mins and check again, once thats done youre ok until you plug it back in. Big CRTs are scary because the tube goes boom if it loses vacuum
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Oct 19, 2021 17:32
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CRTs also tend to have multi-kV potentials when they're operating, which could potentially be capacitively stored in the CRT tube itself even when the set is off if the bleed resistor has gone open, which is a bit more dangerous than typical tube equipment.
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Oct 19, 2021 19:15
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billboard ads for riak
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Oct 25, 2021 14:04
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