IBM
“It’s Broken Again!” – let’s diagnose a monitor using my
“It’s Broken Again!” – let’s diagnose a monitor using my new Ring Tester
#Broken #lets #diagnose #monitor
“Tony359”
Let’s explore my new Ring Tester with a failed CRT monitor Thanks PCBWay for sponsoring this video: …
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missed opportunity to not call the video "fix it again, tony" hehe
Thanks for showing the process and tester.. cheers
Thank you! Cool joke about CRT danger
Hi.
Flyback transformers are in fact magnetically coupled inductors!
This is the basic rule for any flyback, and this helps allot, because you measure the inductance of an inductor with an inductance meter ( RLC meters are best ).
Even if you do not have a working transformer for reference you can still get some values and search info on the on the internet.
If you do have a working transformer for comparison, then THE BEST way to test a flyback transformer is with an RLC meter, it let's you set the testing frequency, making the measurement way more accurate, and it gives you the best possible results.
That is because if any of the windings are shorted ( or partially shorted ), then the inductance will be way smaller then it should, that is a dead give away of a shorted transformer ( the best and most precise way ).
Cheers!
Thanks again for an amazing video. I always learn a ton from you. Wasn't aware about this project, and I'll give it a go. Cannot wait to know where was the fault on the monitor !!!!
So I would need to watch the whole video to the end before getting to know it would be a no fix, Even if the actual Title say lets FIX a monitor using the ring tester. I would call that a fair bit misleading
Thank you for the video! You haven't repaired but you figured out the cause! That's the most important part. I also liked funny beginning with two of you!
I think C476 might be bad, I think that was right next to that hot resistor, so you may have been assuming the resistor is what is getting hot when in fact it was the capacitor & resistor.
Great video!
To me it's unusual for even the initial fault to be the flyback itself.
I worked on many (slightly later) CRTs back in the day, and the majority of the time it was either shorted Horizontal Output Transistor (usually due to bad capacitors supporting it), or cracked solder joints.
Granted, I didn't see as many as someone working on full time CRT repair, but I can't recall a single case of a bad flyback in isolation
Brave man dancing with CRTs!
I'm not sure if you already said, but there's any desoldering gun good enough for a casual use (Europe sellers)? I won't spend like 250€ to use twice a year
Awesome, thanks for sharing!
A cliffhanger Tony?? Haha! Please give an update once you know if this flyback was really the issue. So weird how the housing bulged. I never want to touch CRT monitors – they are too dangerous for me and my abilities. Thanks for the nice video – and enjoy your vacation!
What spectrum analyzer app are you using?
-then why are you doing it? – I dunno. This is hilarious!!
Makes me wonder if something on the board is drawing too hard on one of the flyback's outputs, causing the winding to overheat. (Probably just defective, but ¯_(ツ)_/¯.)
Second Tony appearance be like: "Always two, there are. No more. No less. A Master and an apprentice."
Hard to get reliable parts for CRTs nowadays unfortunately. Current flyback reproductions are hit and miss, even from reliable sources. It actually depends on the time of year the flybacks are made. Summer months are better because the potting that separates the windings/rings and keeps them from shorting sets up better in warmer temps. Flybacks produced during colder months fail at higher rates because the potting doesn't fully cure and they develop shorts between the windings/rings. Just something we have to deal with, given these parts are not highly sought-after anymore. Another great job on this Tony.