When replacing Sony CRTs, I found that carefully matching up the distances between an element in the neck (pick one) and the yoke, will save you a bunch of mucking about with geometry. I'm disappointed though that he didn't demonstrate using the discharge tool he made.

Thank you so much for making this video. I feel a lot more comfortable about trying to make a yoke adjustment knowing these things. I was just never too sure about how many danger zones there were inside one of these aside from the anode cup and cable which I suppose is kinda obvious.

Great video. I'm currently starting to venture into crt repair so useful stuff in this video. Thanks.

Appreciate your Videos, just finished recapping my PVM :-) It was quite a learning curve but felt great after all was done

Always a pleasure Steve. Thank you for what you do. 8^) Anthony..

This is the best retro channel ever. This stuff is Gold.

Thanks so much for making these videos, Steve! I've been trying to learn how to calibrate an old PVM and I've relied on your videos a ton.

I would like to see a vid about how the image gets affected when the yoke is too close/far from the tube or not evenly pressed against the tube. Thank you for sharing your knowledge with us!

Such a great vid, man. I do need to work on my CRT. A corner is warped and the yoke is tilted. But i do want to make sure I’m safe.

Great video!

Thank you. good video

Always in the mood to see Steve doing what he does best. The dude is sooo awesome!! 8^) Anthony..

@RetroTechUSA

5 жыл бұрын

Thanks Anthony!

I would also add that if you plan on working on these in depth (like adjusting a yoke while live) not simply adjusting pots or rings a isolation transformer would be a good idea. Many service manuals for consumer tvs state you need one since it was cheaper to make them without it. A lot of these pvms/higher end stuff and quite a few arcade cabinets already have an isolation transformer built in. Just make sure you get one that has two prongs. I believe they call it a Technicians Isolation transformer. A lot of the current ones are three prongs and link neutral to ground on the output which isn't what you want. Here are two videos that explain why kzread.info/dash/bejne/Zaaqp8aBqaTKYs4.html kzread.info/dash/bejne/inans5Wsipebds4.html I would also mention discharging those big filter capacitors would be a good idea too. Those can hold a big charge even after discharging the anode depending upon the model.

@shiroumxm2052

3 жыл бұрын

hahhha the kung pow dude

thank you for this videos, i have 2 pvm to repair,

When I was a kid, I made some cool arcs between the anode cap and chassis. It made a lot of ozone.

I've been soldering older video game consoles, installing chips and other modifications. What other experience do you recommend I gain before jumping into CRT repairs and mods? It really is a passionate curiosity of mine. Thanks for all the info!

Does earthing work the same? I've already seen tutorials on KZread (yours are quite good) but I'm making sure I comprehend more than the big picture of this. PS. I'm quite aware of voltage leakages, so I thought this whole discharging maneuver should be performed by touching the flyback's pins instead of the rubber suction cup part.

I want to clean the dust out of a CRT using canned air and a vacuum hose, will this be safe after letting the TV sit for a few days to discharge as long as I avoid touching the high voltage areas?

useful!

I’d like to work my way up to being able to work on my own crts, but I’m not experienced or knowledged enough. What would be a start to that?

When making adjustments to the settings on the inside of a lower end PVM, would you recommend discharging the monitor and then making the adjustments while the monitor is off?

Hi, All rings set are universal,just use a set with same diameter,that's seems logic,right? I will check my convergence on arcade,but my rings are glued and one is brocken...so,I will use an other set. Thanks

Not sure if you’re still active. But I’m trying to fix a crt with a busted vhs player. (Tapes play for a few seconds and stop, and tape won’t eject.) Is it worth it to try and fix it myself or am I better off just buying an external vcr?

if you let the tube alone for 1 week its supposed to be totally discharged? looks a good way to inspect that with safety.

This is a great video. I do have a question concerning an older television issue. The TV in question is a Zenith Sentry 2 from around 1992. The original chasis developed a short where the final moments made the TV all green on the screen at very low brightness; no sound; shrunk picture and then it finally popped. In looking at the inside on the neck board, it appeared that a capacitor had shorted out, also the pins on the tube are a bluish color. Rather than trying to repair that part; I did manage to get full replacement chasis of a similar type but the ground hook is different on the replacement chasis. Its not a huge clip but rather a smaller one and the chasis is stereo. The main board is mounted in an exact plastic frame like the old chasis but how do I connect the CRT grounding points safely? All connections on the chasis seem to be the same since it is a similar/upgraded Zenith Sentry 2 board. The ground lead is the confusing part; and also disconnecting the old lead. The anode cap is well known so that's not an issue there. The set has not worked for almost a year so it was never attempted to try the power after it popped. Please help. Thanks. Gary

@milojkokitic6991

3 жыл бұрын

I know this is an old comment but if it was just a shorted cap i would just repace it instade of thorwing away chassis that could be easly fixed

Hi I just picked up a Panasonic 2002 ct off the street and was looking online about it. I’ve been hearing that CRTs are dangerous and had no clue. Can a CRT explode while Im using it? Or is it when you take it apart?

Is there a way to find out how to get into a Service Menu for Sony Triniton KV C2911 D? I have tried multiple button combos but no success. My issue is when i hook up my consoles with a RGB signal the screen alignment ist off slightly to the left a few cm. Is there an easy fix to this because in some games you cant see enemies and stuff until its too late and kinda bugs? Any help appreciated.

Thanks, that is very helpful. I nonetheless read that the most dangerous part is ultimately not the cathode buy the high voltage capacitors. How can we be sure they are really flushed even after a power on/power off cycle?

@RetroTechUSA

5 жыл бұрын

Caps can be dangerous if the hold over 48 volts or have a high capacity where they store high amounts of energy. The main board doesn't have any caps that are dangerous for the most part. The power supply area is a different story, but either way the flyback and anode are way more hazardous than any of the small caps inside. Thanks

While working on a CRT, is there any reason you'd ever not start by discharging? Seems pretty logical that that'd be something you'd always want to do. This was very informational, thanks.

@RetroTechUSA

5 жыл бұрын

Not always. There are some adjustments you have to make internally while it's running. However it is good practice if you are new to working on CRTs to discharge the tube.

@RastaJediX

2 жыл бұрын

@@RetroTechUSA what about discharging caps?

@kruskotv1311

2 жыл бұрын

@@RastaJediX if they are big sure, discharge them too, if you want to be extra careful, discharge smaller ones too, safety first ~ Anatoly Dyatlov

@TheChuckster402

2 жыл бұрын

Does the ground need plugged into a wall outlet during discharge? If not, how does the chassis ground reach the earth?

@YetAnotherSADXFan

Жыл бұрын

@@kruskotv1311 💀

Excellent video, I would like to add Spanish subtitles if possible. Just LMK

@RetroTechUSA

5 жыл бұрын

Thanks, sure you can add subtitles I think through youtube.

@FragBenitez

5 жыл бұрын

@@RetroTechUSA I believe so, I will check later to see if there's an option to do so

9:16 what are those clear plastic wheels on the top of the yoke cover?

@SarahRWilson

2 жыл бұрын

I believe those might be magnets for adjusting geometry. Usually if I'm digging this rabbit hole, I try to RTFM before I get to deep.

Discharge the EHT and leave a shorting link in place

Great video! Question: So what kind of screwdriver would you recommend if you need to adjust the pots near the flyback? There seems to be like no room to use a screwdriver in that area. A long bendy one or a short one?

@RetroTechUSA

5 жыл бұрын

I don't have a great rec. yet. I was hoping to have some 1 inch plastic screw driver tips to be made on a 3d printer or something. I'm still working on that. Mostly I have to adjust it with my fingers currently.

Could anyone please tell me what are the risks when someone is hitting on the CRT screen hard with the palm of his hand, when it is on and running? Blast City Arcade CRT btw, (fighting game rage). Trying to get my friend to stop abuse his stuff, but also want to know if he is putting ppl next to him in danger by being violent on a old screen.

@jordanjames5619

Жыл бұрын

This is extremely dangerous and he should stop that straight away. CRTs are large glass tubes with high voltage and high vacuum inside. They can implode and send glass shards in every direction. So yeah, don't.

If a TV has been sitting in a garage for years without being turned on, could it still store some voltage in the CRT and be dangerous?

@w.neuman

2 жыл бұрын

**{ I · "SECOND" · °THIS-QUESTION ! )** €¥£ ^

Sony VX Magna Colour

? What was this video about ?