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Fixing the Infamous Wega Bend/Bow
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- Опубликовано: 20 сен 2021
- WARNING: DO NOT attempt this if you are unfamiliar with the inside of a CRT. If you do not know what you're doing, you ABSOLUTELY need to watch this video first:
• CRT Safety - The Consu...
Yes, I know I mispronounced "wega", this is on a KV-FS100
omg. i had a FV300 just sitting in my garage for most of last year due to the horrendous bowing on the bottom edge. I did so much research into potential solutions so many times and always came away discouraged by the total lack of consensus on what to do (there will always be someone saying "needs a recap. nothing else will work.") and the complexity and danger associated with any of the proposed solutions. I finally found this trick yesterday in a video posted by SpudZgames, it worked, and the FV300 is now my primary set inside the house. thank you so much for discovering and sharing it. I am absolutely amazed with all the thousands of words written about this problem online that it took till Sept. 2021 for anyone to share that the manufacturers included a way to mitigate it. wild.
Yeah I thought Riggel was going to make a video for the masses, but someone beat him to it - early bird gets the worm I suppose. I don't mind other people making videos on it at all, the more that know, the better in my opinion. CRT repair isn't even the focus of my channel, this was a total one-off where I just grabbed my phone and started recording out of disbelief, haha. Glad this solved your problem, Wegas really are incredible sets as long as you know how to calibrate them.
Don’t be a jerk. You can be nice about it you noob.
@@user-ol4uw4ij6e can you please explain who i am being a jerk to and how
I've found a few vague mentions of this procedure on reddit comments from 2-3 years ago, but it wasn't until lately that more and more people are actually showing this in action. I think we need to keep spreading the word because most of the time I read comments like "that flat screen wega is crap, get something else", but if this will be the fix for my KV-32FS120, I'm going to try it once I manage to move it. It's so heavy!
I agree, the word needs to be spread. I was also thinking of making a quick guide on using a colorimeter with an SD crt. I tried making one a couple days ago but was dissuaded once it turned into an 11 minute video - I like to keep guides short.
@@NullyBird We need more tutorials and guides covering how to calibrate consumer CRTs. I've been learning step by steps thanks to videos like yours, Riggel's, SpudZgames', etc. And I find it interesting that most of these videos are from the last 12 months. We're going through an interesting time for CRTs (Maybe pandemic?). Thanks dude! Looking forward to any future upload of yours.
This procedure is described in the service manual for the KV-XJ29M31 with a BG3R chassis and likely applies to a lot of the larger Wega models from Oceania and South East Asia.
Dude! great find! I have never heard of anyone adjusting those rings. Most people say to throw the TV in the dump. Some people say to push the yoke in but this is the first time I have heard anyone adjust those rings on the the neck. I think I might do a video of this on my channel. I hope you don't mind. I will credit your video in my video.
Sure, go ahead.
@@NullyBird cool thanks.
@@NullyBird Thanks for posting this. I wish more people shared stuff like this when they figure something out.
@@riggel8804 NP, I had given up on fixing the bowing and was applying magnetic strips when I came across this.
@@NullyBird Where did you get the idea to try it?
Helloooo I just died from a 27000 volts trying this and I came back to haunt you forever ❤
thats nothing, i died from 99999999999 kw
Thank you, I have seen every CRT adjustment video on RUclips and only you showed the solution!
i can hear the pich noise from that TV, oh my ears
Seriously? That gets through super heavy RUclips sound compression?
yup same
@@lovemadeinjapan yeah man, specially in the begining of the video XD
@@sos.gamers My ears filter it... 40+
You can also move the yoke itself to correct. The yoke's foam wedges shrink or fall out of place over time. I think the high voltage danger means most people would rather just toss it.
Yeah, it's best to reseat the yoke first and then make all adjustments after. There's really no danger if you just stick some lineman's gloves on.
You can use the service menu and change the vertical
I wished I saw this video sooner. Thx for uploading
I've got this problem with a Sony 24-in Trinitron that I had found when someone was throwing it out. I got my PS2 hooked up to it with component cables and I thought that might have been the issue because it's only 480i and the PS2 only goes up to 480p.. in some games. I hooked up composite cables and it still had the bend. I tried a PS1 game and noticed the menus were kind of trapezoid shaped almost and the tilt feature under the TV settings didn't fix it ... maybe this will do it.
Здравствуйте. Как называется эта решётка для теста экрана? Где её взять и как включить?
240pTestSuite
Didn't know Matthew Mcconaughey was into CRTs.
Nothing wrong with the wega. Assuming it is Japanese, the speak vowels like if they are Dutch (easy prompt for me), so it is correct. The only thing I can think of is that the second syllable gets the emphasis.
that tv is good for watch the cable tv , Sony always has beautiful colors on all its screens ,the chanel cinemax I like
Thanks, this at least fixed a lot of the problem. I cant completely fix the bowing but it is much less noticeable now so i think thats a win
the first thing you should do on these sony wegas before moving the rings is he should have replaced the tape on the wedges holding the tube up. the tape on the wedges breaks down and the tube starts sagging and it makes the bend
You see those little squares, those are your convergence magnets. Try u sticking one and move it closer to the yoke. That will help a lot with the corners
Gave this set away a couple months ago. Tried every which-way with those magnets and that gnarly corner just wouldn’t give. Currently working on a curved Trinitron KV-27V10.
It affects the bottom too though it seems...so wouldn't solve the top without screwing up the bottom.
Also, there's already a service menu control that does this. V-Bow.
Edit: I was wrong - this totally worked and V-bow only affects the sides, not the top and bottom!
Yeah, on a Wega you have to find a middleground and learn to live with it, in truth. Vbow changes the bowing of the vertical lines, this is for changing the bowing of the horizontal lines.
@@NullyBird You're right, my mistake on the V-bow. I gave this method a shot but sadly can't get the rings to budge. I tried cutting through the white resin with an exacto knife, but to no avail.
@@eleckson try pouring a fraction of a teaspoon of Isopropyl alcohol on them. Put a cloth underneath to make sure it doesn’t drip onto the board(won’t hurt the board if it’s 99% isopropyl though).
@Nullyboy thank you! Will do! I only have 70% but will try to dab some on with a q-tip
@@NullyBird Mother of god, it worked! The results are great as well! Much appreciated!
Isn't it something that can be solved in some way from the service menu?
Nope, thats why there are those rings there, if they were fixable with the service menu those rings wont be there i think
My flat CRT doesn't have convergence rings... What do I do?
I just placed 120 pound magnet in front of the screen. It seems to fix the problem.
FACE MY WEGA STOOOOOOOOOOOOOOOOOOOOOOOOOOORRRRM
get out of my head get out of my head get out of my head get out of my head get out of my head get out of my head get out of my head get out of my head get out of my head get out of my head get out of my head get out of my head
There is glue on the rings of my set, I saw mentioned to try dabbing some rubbing alcohol on the glue and cutting it to free the rings up. After doing this and making the adjustment, should you re-glue the rings back together so that they don’t shift or move, therefore, messing up the geometry again after fixing it? If so, what glue is recommended? Also, doesn’t messing with these rings affect convergence?
Late reply, but I never glued mine back together - but that isn't a bad idea. I moved my CRT many times after this adjustment, and never had the rings fall out of place. The lubrication from the rubbing alcohol is temporary, so I think you'll be fine. But if you can find info on which glue to use, then go for it.
Ok good to know. Does fixing the bottom adjust the top of the grid in the same direction as well? The bowing on the bottom of my screen is bad and going in the opposite way of the bowing at the top, which is slight if anything. And, do you have to move both rings, what happens if you move just one ring? Did this affect color or convergence on yours?
Do you think this would work on other brands of CRTs? My flat Panasonic with similar bowing but a completely useless service menu. Would most consumer CRTs have the same type of ring?
Only one way to find out... or look up the service manual .PDF.
Will this method work on my Sony Trinitron KV-36FV27?
I'm not sure which ones have these rings, mine is a late model budget Trinitron I believe.
Which model is this? The KV-27FS100?
That’s right! Budget Trinitron, but perfect for 5th and 6th gen - tv shows from before the mid-2000s look amazing too.
@@NullyBird Awesome. I just picked up one locally via FB marketplace for $75. It was even modded for RGB as well.
@@Reluctant_Hero Hell yeah brother, enjoy the set.
I have this issue on my Toshiba.
There are two sets of two rings each. The first set is for purity and is used to get rid of splotches of discolouration in the centre of the tube. The second set are known as the convergence rings, and they adjust vertical convergence, but you need to really know what you're doing to adjust it properly(I rarely mess with them). On this particular WEGA, there are rings towards the back that aren't typically present on CRTs. I'm doubtful you'll find them on your Toshiba, but I hope they're there for you. Make sure to mark the rings' original positions before you change them.
@@NullyBird if i dont have that, are there any common techniques to getting rid of the bow?
@@benjaminyoung9694 I have no suggestions that come from personal experience. However, alot of people keep saying you have to remove and re-adjust the yoke. I'm still waiting for someone to make a video of that process, lol.
Does this work on hd wegas?
WAAAAAAAAAAAAAAAAAH!
I have some bending and off geometry on my Sony KV-27FS120 and I have been trying so hard to find a good example of how to adjust the rings I keep reading about. Thank you so much for showing that it actually works and what to look for. I want to do this myself with safety gloves, I'm just a little nervous. I see you are doing it bare handed while holding your IPhone. Maybe I can get lucky and find someone who knows how to do this in my area? Most likely not! Do you have any other advice for handling the insides of a CRT for a noobie like myself?
Would recommend watching the video that's linked in the description. But the points of concern are: tube + Anode cap + fly back + fly back wire going to anode cap. These 4 items have great potential to harm you if you're not careful. The rings I'm touching here are safe, the deflection board immediately behind said rings can electrocute you, but it's only a tingle(Think of a light-switch mini-electrocution).
@@NullyBird got it. One more question. Is the geometry grid you’re using from the 240p test suite? I suppose I could load it from a CD-R on my Dreamcast, I don’t have an Ever Drive or a flash cart though. Any suggestions? Thank you again!!
@@tonybogard6888 definitely burn it to Dreamcast, it’s the best version. In this video, I was using an image from google of the 240p grid, played from a usb on a PS3. I was too lazy to get the Dreamcast + VGA box +
Scart2component transcoder.
@@NullyBird would I need the VGA box and transcoder specifically to use the grid?
@@tonybogard6888 no, a composite cable is fine, that’s just how my Dreamcast is set up.
Edit: unless you want to calibrate colour balance on component, then yes , you will need to buy those.
beeeeeeep beeep beeepppp
Still only temp fix. To fix this properly you need to reseat the yoke.
I mean; if you want to post that video, lots of people would appreciate it.
@@NullyBird I have already done mine. I am very likely to mess it up again if I start poking at it. It takes a while to get it right. However, if people google 'CRT database yoke sag' they should get a link in the the top three search results with a guide for how to do it.
@@lullylew9083Fix is a fix, this way is far more accessible for people.
@@NullyBird You're right it is a fix and for that you have my thanks. However, a yoke adjustment will yield better results and last longer if people are willing to give it a go.
Ha, this issue why I ended up giving away my flat screen Wega Trinitron. I was only able to improve it slightly in the service menu. After that CRT, I picked up a curved screen Trinitron (manufactured in 2000), and the geometry is much better.
Should I attempt this in the bathtub or relocate the TV first?
Hello how do you display it on the TV by connecting it to PC?
Buy a simple hdmi->composite adapter, they're cheap on Amazon usually. If you want lagless component, be ready to spend big $$$.
@@NullyBirdThanks i got the Scart one and its working fine :) The problem now is ot fix the not so good geometry but this sadly need the TV to be opened...
@@woofaki5550 Yeah, the rolling test pattern is much better for gauging corner geometry in my opinion.
@@NullyBirdMine has a problem that i cant fix from the service menu,the upper part where the red one in your video is,will start sinking inside the bezel and by the time it riches the left corner its around half cm in....I wonder how will i be able to fix this one.I was thinking to try magnet strips if i manage to find someone to carry the TV put it on a higher bench and open it...PS:Just seen a video that shows my problem,it does seem like the yoke is lightly tilted,so i need to try and fix that (hopefully)
Is that not really dangerous? Working on a crt manually with it on.
Its not really dangerous if you know the dangers and you are experiences and careful with safety equiptment. Opening a breaker box with full power is dangerous but electricians do it all the time.
Looks like it works but I can’t really see anything:(
Turn up your monitor brightness. Maybe it’s a full vs limited range issue.
@@NullyBird when I wrote that, it was on my phone max brightness, but sadly I’m on vacation right now 😔
I wonder how Sony managed to put in the market a tv with such a blatant defect.
flat screens were experimental at the time. if the industry kept making crts after this series it probably would have gotten allot better
Mine is starting to bowm thanks
Learn basic electronics! You just don't go poking around into a Sony Wega set and start messing with those ring adjustments and expect miracles. You need to learn how to read a schematic diagram. There's a lot of high voltage you're dealing with.
With respect; I've had much experience adjusting CRTs in the past. I've put a giant warning in the description, that directs to a relevant video on CRT safety. I take every precaution necessary. These two rings in particular stood out, as I've never seen them on other CRTs. I could remove your comment, but I take safety very seriously - and I think the merit in your message is justified, so I will let it stay.
I admit my comment about part of this procedure being "dangerous" was misplaced, it was very late and I was far too flabbergasted by the results to really think about what such a quote communicated to my audience.