Instagram / spudzgamez In this Video i run you through how i fix the bowing you get in a Flat Sony Trinitron. Not all Flats have the unique rings but if they do they make life easy. Hopefully this will help.
Easily one of the most comprehensive CRT videos on RU-vid with geometry. I just got a free 32” Trinitron, and makes me motivated to try and fix the bowing since all videos on RU-vid are about the service menu. Cheers.
You're a lifesaver! I recently bought a 14" flat screen trinitron and was having a little trouble with bowing and not being able to fix properly within the service menu! Managed to get my geometry as close as to perfect as I could. Thank you!
Fantastic. Thanks for showing those bowing adjustment rings in action. Most of the mid-to-high end flat Trinitrons made in the final Trinitron years should have those rings.
Nice one, keep doing what you are doing, crt vids perfect. There is no one left locally to me that can repair crt TVs and through your video I've fixed the bow on my beautiful kv-32fc60, many thanks
I just found your channel and subscribed! I picked up what looks like the exact model on the weekend and I noticed that it does have the bowing in the middle and there is some geometry issues. I'm just waiting for the remote control and 240p test suite to arrive and then I will give this a go. I'm a little nervous as I've never had a monitor powered while checking out the back inside, but I think it should be okay if all I'm doing is those rings. I'll let you know how it goes.
Thanks for the video. I have a 21 inch flat trinitron and the image is sagging on one side. I remember trying to fix it from the service menu but it didn't move the image incrimentaly, the only setting that changed the gemotry was a toggle between two very different positions. what remote buttons did you use the change the geometry?
Incredible. Impressed I've never seen that in action. I've always been afraid of messing with that stuff in the case it make things worse and I never achieve the original setting and end up with a worse geometry overall.
Ah man. You beat me to it. I was planning on doing a video on this soon. A fridge magnet glued to the tube in the corner would probably clear up that blue convergence issue. Tv looks great. Time to play some games.
@@bookshelffury yeah no joke. the round thick fridge magnets can work. Even better are the small rectangular/cube shaped ceramic magnets you can get at a hardware store. They work great on corner issues. You can also get thin ceramic magnet strips and glue them to a piece of paper and cram them under the yoke, people call them, "convergence strips". I have a video on my channel that shows you how to do it. It's really easy and I think it's fun.
Just be careful with fridge magnets. I've found they can throw purity out if too string. I just recycle strip's of Junk CRTs. I've just run out for this video.
@@spudzgames4361 ill try n be careful. i've got a wonky corner where the red and blue get out of line. while the other corners are ok. it's like the last 3 inches of one corner.
Yeaaaah someone showing what these rings do. I just decided to say F**k it let's see what these rings do and boom sorted the problem I was tearing my hair out trying to fix. Nicely done.
This is great. I'll have to get around to doing this on my Sony KV32-FS100. Have the exact same issues, can't wait to try this! Hopefully I survive.. haha
@@VAMPIREMACHIINE Yes, that's my life right now, as well. Haha. I have a KV-32-FS120 with the usual bowing at the top, and most of the time it doesn't bother me but wanted to know if it was worth it to open it up and try this fix one of these days. Hopefully it does have those extra rings because I heard not all WEGAs have them.
@@brokenfix Yeah that’d be kool if I have those extra rings. Really my bowing isn’t too bad. It’s barely noticeable, got lucky with mine. Got it from an old lady who never turned up the bass on the tv audio. So the geometry is almost perfect.
Greetings, I have a doubt, I have a sony tv model kv-29fa210 and when I see images with a lot of brightness or white light I observe a flicker, it happens more in n64, in the wii I hardly notice it but it is present, that is normal the crt or do you think it's a tv failure?
In hopes that you respond to a comment on an old video how could one go about fixing the skewed white lines where they intersect? I notice you have some on the white lines along the left side of this tv. It's always where the lines intersect and the top of the vertical line bends to the right below where it intersects with the horizontal line. I have a flat screen trinitron very similar to this. I got everything nearly perfect but I have those bent spots in the vertical line right below the crossover point throughout the entire grid instead of just small amounts of it like your tv. If I turn the contrast down those bends go away and everything looks perfect except the picture is too dull to be useful. Turning red down also fixes the bend but again it ruins the image making the fix unusable. I've tried everything shown in this video but nothing I do makes it better than I already have it. Is there something you didn't touch on in this video that could help with my issue or could it be just the caps are bad? I did notice the picture wasn't that bright when I got the tv. Even cranking everything to the max in the regular menu didn't give enough brightness to make something like Doom 64 playable. I had to make tweaks in the service menu to boost things further so I could have an acceptable brightness with picture and brightness in the menu set in the middle. Oddly, the grid had the same issue before boosting things for a brighter image. It really makes me feel like there's cap issues but I am really hoping to find another fix. The caps are a level of work I don't know if I want to get in to. They all look perfect but I know that doesn't mean they are ok. Sorry for this increbly long comment but any help would be greatly appreciated. Thank you.
Does anyone know the model number or if there is a users/repair manual for this Trinitron? I found a model that's exact to this one except it has a black lip, S-video ports, and a euro style plug.
240p test suite - its available as wii homebrew, snes rom if you have a flashcart.. its probably available as homebrew on every popular retro system at this point tbh
thanks a lot for this video. Is there one where you show exactly how you move those rings at the rear? Do you use a tool or you do it by hand? A video on this would be appreciated. thx
Good info! I always heard this was unfixable and so never thought twice about it on my 27" fs120. I noticed the extra set of rings when I did full recap , yoke reseat, and TV tuner signal delete mod but since my convergence was fine I never investigated the extra rings. I wish I would of known this a couple weeks ago when I had it all apart lol. I wonder why sony always factory set these with the horizontal hump. Did you try adjusting TRAP or LPIN to pull out the bottom of the screen? It looks a little pinched in.... Looks to have decent geometry other than that. Good info.... I sub
They would have set it up straight at the factory but the problem is with these sets it that the yoke assembly it so heavy that it wears down the rubber stoppers over time and so the yoke sages downwards. The rings are an easy way to compensate for that without having to move the yoke.
Hey mate, fellow Australian here. Do you know any Tasmanians who are competent at working on CRTs? Have an early WEGA Trinitron with some convergence and geometry issues. Should be possible to fix with just a yolk adjustment (especially with the nice potentiometers on the yolk closest to the screen) but very scared of zapping myself with the tube, or misdiagnosing the problem and damaging it. Any help is appreciated, and willing to pay for a fix :)
Hello, I need some help. I have a sony trinitron model kv-32fs100. While watching a movie I noticed that anytime the screen goes dark, there's a very small area in the corner (less than an inch) of light that stays behind. It slowly dissipates but keeps showing back up after bright scenes. Any advice would be greatly appreciated and if there's any information that I might have left out or didn't explained enough in detail, let me know. Thanks a lot
Hello what are you using to display the pattern on the TV?I want to calibrate my WEGA WIDE screen 32" TV to be able to use it with my PC,to play games or watching movies.
It's called 240p test suite. It is usually downloaded onto a flash drive like an everdrive cartridge and played with a Sega genesis or Snes on the TV. Google 240p test suite. Cheers
Please help me, I haven't been able to do anything for a month. I connect the Sony Trinitron KV-21T1R Sega Genesis RGB TV to my image is shifted to the left, I can enter the service menu, but no matter how I try, I can't use any buttons to center the image. Why can't I change the values? Help please
Problem is when you start messing with vertical heigh and vertical position you end up getting very thick black lines across the tv and different areas. Some Sony Triton suffer from this which really sucks
Any idea if some of the widescreen HD CRTs have those rings? I am looking at a XBR970 that has some bad bowing, but I can't find a good picture of its internals to tell if it has the bowing rings.
@@altius6 I have an XBR970 with the same bowing issue and I can confirm the yoke does have the adjustment rings. I have the same bowing issue, so tried convergence strips and magnets to fix the issue. I got some decent results but will try this method soon. Be careful though, all my rings have a ton of epoxy holding them all together and wouldn't budge. I'm going to gently separate them with a razor blade before trying to move them to avoid putting pressure on the tube.
@spudzgames4361 I like how you don't mention that in the video that you are using a test pattern or how u got it. Also u don't mention what buttons u press on the remote to change the horizontal and vertical positions. Just feel like u coulda put a little more effort into this tutorial if u were gonna make one.
@SpudZgames definitely consider upgrading your version of 240p Test Suite for the Monoscope Pattern. You're pushing 88% viewable area right now, and at the wrong aspect ratio. Sony's should be in the 91%~93% viewable area range, while JVC specs 92% Pretty much all videogame systems produce a signal that has a horizontal width that occupies 90.6%~91.6% of the total NTSC viewable area. So you should pretty much always see 100% of the width of any system. Wii is a great option for this work, as it has the same dot clock as DVD, so doing your horizontal centering based on that is as close as you'll get without a real NTSC/PAL signal generator. Neat observation with the static convergence rings, I'll definitely have to try that out next time it pops up. Thanjs.
@@Fahrenheit38 On the end of the second row of the service menu is a value in hexadecimal. Convert that to decimal to get the hours. So I'm this case 19C0 hex = 7312 decimal hours.
Nice video. I was lucky enough to find a really good condition XG29M30 on the side of the road last month. The tube seems to have a ton of life left in it and the picture is great however exactly as you said in the video the outer vertical lines bow in towards the middle of the screen. In games it isnt noticeable unless theres a menu up. I have gone through the service menu and adjusted values but found no setting in there that really made a difference. Any advice?
"outer vertical lines bow in towards the middle of the screen" sounds like it needs a pincushion adjustment See 9:06 in the video. The setting is called Pin Amp and abbreviated "PAP". There may be more Pin Amp related settings (such as Lower Pin Amp) for better fine tuning of corners but I never worked on a flat Sony myself.
The dangerous part of opening a tube tv is that there is a high voltage, and the name speaks for itself as opening without care could potentially give you a good shock. There are many videos on how you can easily eliminate it with a flathead screwdriver and an alligator clip though. As for the modding, it would require a more amateur level of soldering and schematic reading skill.
I like the part where you didn't actually show yourself moving any rings so nobody can tell what actually needs to be moved or how they should be moved. Perfect.
Want to try this, where is everyone getting the black screen with red and white grid? I know the image is online but how are they going to get it on the CRT? Do they use a PS3 or something?
You will need a chipped console or flash cart such as an everdrive. Google 240p test suite. Download for whichever console is your preference and run. Pretty easy.
@@spudzgames4361 I just got inside my KV-27fs120 and moved my rings around. Got the resin off easy with an exacto knife. It’s a nice bonus to have it on there because it marks the original position of the rings.
i have a 2004 kv-36fs100 and im in the same boat as everyone else.. cant fix the bowing with the service menu but the tv is too heavy for me to move rn and give myself enough space to open up the back to see if theres a ring to adjust on this model too - ill check the service manual in a few days but if any1 has worked on this tv before and can let me know if theres a good possibility of this set having this adjustment ring within probably a year of posting this comment that would be very nice XD
It's usually a ROM or a CD image depending on what system you use. You will need an everdrive or chipped ps1 to use it. It's available on the Web. You just download it for whatever console you use.
I love this guide, but one thing I can't find anyone ever to address is the horizontal linearity. Every time I see someone fix a flat CRT's geometry, it's always one with horizontal linearity that's perfectly fine, which I've never seen in person outside of a PC monitor. I want to know how to fix the speed bumps (middle and left/right edges of the screen are narrowed, with two widened sections between them). Instead of a flat image, all of my flat tubes either look like they're being projected onto two barrels, or flat on the right side and barrel on the left.
Flat panels usually have a "rolling log" effect. It's a natural thing for it. It also might be a capacitor issue but that cant be cause all flat panels have this issue. Its unnoticeable on 3D games but I can see why you want to fix it on retro 2d games
@@GalaxyStandard77 This isn't a rolling log, it's *two* logs. Looks like two bubble tubes in tate side-by-side, basically. If it were 3D: -'``'-.,_,.-'``'-
@@superjupi yeah like I said a "rolling log effect" basically like 2 tubes on both sides of the screen. Unless you have 2 bubbles on both sides like in the middle and the top and bottom are perfectly normal. Then it could be a capacitor issue. Is this a round or flat television? What model?
@@GalaxyStandard77 Ah, gotcha. All of the tubes with the issue are flat. FD Trinitrons are the most egregious, with my worst being a Sony 27FS13. If I reduce the HSIZ to 0, the warping almost entirely goes away, but then there's a ton of underscan for basically everything but some N64 and Dreamcast games here and there. Trying to reduce the underscan makes the effect exponentially worse since the only area that expands are the two speedbumps on either side of the center, and even a sliver of overscan makes the distortion so bad that it's visible in 3D games. Both of my Toshiba AFs also have a barrel-on-one-side effect where the warping appears only on the left while the right half of the screen is distortion-free.
@@superjupi it's normal on Flat screen televisions. Especially the bigger the screen. Light emitting on the gun to the screen causes this issue. I remember seeing this in person on Circuit City back in the early 2000s when flats were coming out.
@@spudzgames4361 yes sorry there a regulator on the inside of the crts that control the focus, im kinda new to this and not sure how it looks, so a video of that would really help me with it if you already have one, thanks!
