Repair Fail of a Vintage Sony Trinitron CRT TV - White Horizontal Line Fault.
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- čas přidán 8. 02. 2023
- I had high hopes of fixing this classic Sony Trinitron TV - and indeed, I found some problems and actually fixed them!! But unfortunately there's other issues that I could not locate. If you can suggest anything - please do!
In the meantime, the unit has been stored away until I increase my knowledge on CRT repair!
The ESR meter that I use..
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Ive repaired probably a few dozen Sony's in my career with the exact problem.. Change the Vertical Output IC and you'll be golden!! Also I noticed several cold solder joints while watching this video that you missed.. Hell if I had just given up on a TV I wouldnt eat, so get in there and dig around.. Said my peace.. I bid you well Sir.
Haha, yep - I understand the need to not give up when it's your living. I'd like to think that I paused to give you guys a chance to share your experience, rather than gave up! Yep - that's what I did! 👍😁 I will chase up a new VO IC soon and dive right back in! Thanks for your input 😃
@@TheUltimateRecycler yes the heatsink comound gose hard and dry causing the chip to over heat theres is a a service kit for these trinatrons you get 2 resistors 8.5v zener the chip and that schotty diode. i have change many but not so on the caps sony only used rubycon or sanyo in wich are pretty solid good caos.
and the fuse in the vertical power supply usually also breaks.
Do you guys have any idea whats wrong with my trinitron when i turn on it has a small power sound a small light appears in the bottom left corner, very shortly, but all it is is just black(neutral) screen. Also it makes a few louder sounds like **tick** but only few times. At one point when attempting to turn on my TV the power light (red) near power button, been turning on and off constantly.
My 20'' Sony Trinitron rolled off my bed the other day when I was moving things around and it wont turn on now. The stand-by light blinks three times and then clicks off and wont turn on. Any idea what the problem might be? I know that's not a lot to go on but I've been looking around all day and haven't found anything.
The cable you discharged is called the Anode. It sends electricity through the tube and is extremely high voltage, you discharge it so you don't get a big, potentially deadly shock. ALWAYS discharge your tube before you do any CRT repair.
Thanks for your advice 👍👍😊
I just need to resolder my back inputs, should I do it too?
It won't kill you. You'll feel like you've been hit by a wooden block.
@@deanagoes2791 It absolutely can kill you, hell 7ma across the heart for a couple of seconds can kill you. Is it 100% you'll get killed? no, but it can. But you're not wrong on if it doesn't kill you it'll hurt like hell.
No fire, no explosions! Always a good day when that doesn't happen. 😆👍
But much better CZcams views when it does Geoff!! 🤣
Fascinating. Thanks for posting "fails" - 'tis the only way to learn. ;)
Absolutely! I have learnt lots already - but not enough to have it working yet!
I love that capacitor tester, very handy, people often message me asking if I have come across certain capacitors or chips and that would be pretty nifty 👍
Given that capacitors are the most common component to fail, that tester is very handy indeed! Thanks Sollers 😊
My Trinitron was doing this intermittently. This video and the comments inspired me to replace the vertical IC and now it seems to be good.
Excellent Tim, well done. I'm yet to pull this TV out of storage, but will be replacing the vertical IC when I get around to it! 👍😊
I LOVE finding channels like this!
That's nice to hear! 🙂👍
I loved repairing these sets back in the early 90”s. Very common fault was the Vertical Output IC located on the heat sink. Also there is some times a fusible resistor that supplies power to it that can go open circuit if the Vertical IC is faulty. Good Luck. !!
Thanks Brett. I still have to get back to this job! Thanks for your advice 👍😊
Awsome video even if it didn't turn out in the end! I have a big 34" panasonic that I tried getting running that had a vertical collapse well I wasn't able to fix it as well but I put everything back together and I said I'd get back to it when I had more knowledge and that was a year and a half ago lol. Maybe I should bust it out and have a go at it myself!
Yep, it's probably time to have another go! From the responses I've had on this video, I'm fairly confident now that my next effort will be successful! I'll film it of course!
@@TheUltimateRecycler awsome I can't wait!
Really interesting job! I'm too scared to touch CRTs, with the voltages, vacuums, and rays involved.
I have the same component tester, I think it was reading that capacitor as 100 pF for picofarads not uF, so really no capacitance left.
Thanks, yeah I was being pretty careful of the high voltages! You could be right about the pF readings, I didn't look that closely! 👍
Very good 👍
Thanks Frogy! 😊👍
I remember that some old CRTs used to have a horizontal control adjustment (an adjustable pot ?) on the back of the set to control any picture roll, and if that went bung you would end up with that solid line in the middle. Obviously the newer models have done away with that manual adjustment. 👍
Yeah Alex, the old B&W TVs used to have horizontal & vertical hold adjustments on the back. Not sure when they stopped doing that. There are some pots on the board that may do a similar thing - maybe I should test all of those.. 🤔
30yrs ago we had a TV repair man down the road that Dad was mates with, every time i went there with Dad (often to just push broken down cars into position for him to work on also) he was just resoldering pretty much every component on boards.. (older than that Trinitron generally) he fixed our home one twice before something wasn't available so we bought a used one off him that was better. not long after that, New flat screens flooded the market 68cm etc cheap. so we ended up with new ones which seemed to last until the digital set top boxes were needed and later they ended up failing (hard drives i bet now i know more)
Yeah, bad solder joints appears to be the top reason for failure! Closely followed by bad caps!
Thank you
Thanks Cynthia 😊
Hey chris this was very interesting thank you for sharing with us ....on another note your long nose pliers look really good do you know what make they are so I could buy myself a pair many thanks
Thanks Jay. I had a look this morning and they are unbranded, but would be about 30 years old. very handy items! 😊
Mighty effort, Chris. You did just fine. Sometimes, just leaving a problem & then revisiting can solve it.
Exactly - just like doing a crossword!! 👍😊
Have you tried reflowing the three legs of the horizontal output transistor? It is a slightly larger transistor about as wide as a finger or thumb.
That can also cause horizontal line if the legs break loose from cracked solder joint.
I'm not sure I did try that. I need to revisit this project soon - will check that out, thanks! 😊👍
Hi try changing the h line out put transistoe
replace that vertical ic..and you are done.If you can arrange the same part from anywhere. Because the cap you removed caused the ic to internally damaged..
Thanks, yep - quite a few people have pointed this out to me! I need to dig the TV out from storage and order a vertical IC 👍😃
@@TheUltimateRecycler I appreciate..your work for saving the world from e-waste
Nice try! The failure is with the vertical deflection, I am not a CRT expert either but there should be a transistor driving it? The CRT is a large capacitor so it retains the charge when switched off. By shorting the anode with ground, you discharge it. However, you should clip the ground to the metal tabs (or wires) around the CRT itself. This way you're shorting the capacitor. The way you did, you are shorting it through the PCB which can be dangerous. That's a lovely Trinitron BTW!
Thanks Tony! Good info about the CRT - I'll refine my methods now! 👍
There are repair manuals for these online. Vertical line has a common diagnosis flow chart aort of thing to check through.
Thanks for that. I do need to revisit this TV and finish the job! 👍
Well I don't blame you for keeping it, nice try anyway.
Not sure if missed ( got a phone call halfway through) anything there, but did you check that the resistor was working correctly? When they go wrong they can over heat causing the solder to fail, the circuit board looked a bit brown there as well, if that is the case it may just need a new one. All the best.
✌♥️🇬🇧
Thanks Les, the unit has been stashed away for now and will be revisited sometime in the future! 😊
That’s the final anode can be up to 24kv. Always discharge this to the tube aquadag (graphite coating on tube bowl) or tube metal frame never through the chassis. Field output will be the issue
Thanks for the info Steve! 👍😊
Hi try checking the vertical line out put transistor
Many thanks Tom! Yes - this job is still on my list to get back to! 👍👍
To discarge crt capacitor, use ground from screen, no from board. Clean all first before repair. Its very important to get a nice tv for very years.
Thanks for watching and your advice! 😊👍
@@TheUltimateRecycler You are welcome!
Did you ever fix it? Did you check the neck board?
It's on my list to get back to very shortly! Most people seem to think the vertical IC is at fault, so I'll order one soon - just need to make space on my workbench! 🤣
You should never discharge the final anode (rubber cap on tube).into the chassis as you are vulnerable to damaging semiconductors ..Still watching your video, and will comment another time,and have just subscribed....
Thanks Robert, I appreciate all the tips I get from viewers! How should the anode be safely discharged?
Did you sell that last load from the farm on Ebay yet?
Just getting it ready for listing John. I'll have a results video up in a couple of weeks just before my next trip 👍
I don't envy this job. You gave it a good try.
Thanks mate - had to have a go! I'll hopefully get it sorted eventually!
Sir.. triniton tv going to standby mode...why it is....?
Sorry, I'm not a TV repair man and can't help you with that!
A link to tester would have been nice. Cheers Graham
The ESR meter Graham? I'll try and find a link and add it to the description 👍
@@TheUltimateRecycler thx mate.
change the vertical ic
Thanks Koukias electronics, a few have suggested this option and I'll give it a go soon 😊👍
... not sure if I have ever seen a CRT board quite that dusty before. lol
I agree Mark, it was pretty dreadful! 😲
Did you ever end up fixing it?
I still have it in my list of things to do! Hope to get to it soon 👍👍
I had Sony tv back in the early 90s. Purchase second and not long after owning it, stop working. Tv repair charge $70, he said all the solder joins were dry. only lasted a few months and repair shop had close down. Last time I every paid someone to repair anything or purchase anything other than spanners from a pawnbroker.
Dry solder joints seems to be very much a 90s and onwards electronics problem! Lead free solder is pretty ordinary!
@@TheUltimateRecycler for sure Chris
Could the Yoke Coil be bad, I know that if it is bad it can cause an image like that. There might not be enough resistance in the yoke anymore, I know people "rewind them" to solve the problem. Yoke don't really "go bad" they just lose resistance. Hopefully that's the issue it's the only thing I can think of.
Could be the yoke I guess, but quite a few people have advised to change the vertical output IC - so I'll try that first (when I dig out the TV again!). Thanks for your thoughts.. 😊👍
its the frame ic -I bet you!
Yeah, I'm going to pull this unit back out of storage soon and replace that IC 😊👍
Such a pity you weren't successful with your repairs... I saw movement on all 4 legs of your second fix although the other 2 legs were maybe supports? The fact you've found issues any one of which would have prevented it from working.
The trips in the van might have caused some of the broken joints you found...
Yes, the support leg solder had cracked as well, which I did fix. Unlikely Martin - I drive like a grandma off to church on Sunday mornings! 😉🤣
@@TheUltimateRecycler lol, I was blaming the road vibrations and odd pothole not your lead foot and liking of off-roading 🙂
I have watched the video a gain it has frame collapse
I do have to get back to this job soon! Thanks for watching again! 👍
Change the vetercial ic
Is that the one I reflowed the solder on? Do you know for sure - or just guessing?
@@TheUltimateRecycler Yeah probably the vertical sync IC or something around it, if you have the service manual it should say where it is. Can't tell for sure from a video and without testing because it could be something around it, so educated guesses only, please proceed at your own risk.
Thought you were going to crack it.
So did I mate! Was a little disappointed as you could probably tell!
that's vertical collapse in tv repair the dag wood cap has 26-000 volts on it discharge to the earth around the tube
Thanks! Yep - I've certainly learnt a lot with this job! I still have to order a vertical IC for this TV!
Replace caps too
It is not a White Horizontal Line Fault. It is vertical issue.
Yes correct. But most people with limited knowledge will search for "white horizontal line" as that describes the problem to a non-tech.
Sell it as parts only imo
Hmm, maybe I could store it in the shop with a price tag?! Brilliant idea FF! 👏
@@TheUltimateRecycler yeah thats true as is
I found this video on replacing vertical ic , might be helpful, i will follow you since i have same tv problem hope it work. czcams.com/video/-6-qlhreNiE/video.html
Thanks Hesham, I hope to get back to this TV soon! 👍😊