I have a 784D and the display has failed. Haven’t tried troubleshooting it yet, but if a replacement is needed this video will be a very helpful guide. Thanks for the clear run through of the process - excellent job on the video!
Quite a project. Well done say.. Impressive machine too. I see that the old CRT uses magnetic deflection. I thought that only electrostatic deflection is fast enough for a scope. But, maybe a stupid question 🙂 what would be the reason of replacing the CRT? What do you gain performance wise?
I've got this oscilloscope with a broken CRT, so I had to replace it with something. As it was really complicated to get an orginal CRT, I decided to retrofit it with LCD. What do I gain more? There some aspects like: weight, power consumpsion, no X-Ray. Does it matter? I don't know. Perhaps it's critical for somebody... ;)
@polymath.electronics okay, if it was broken, more then legit 😁 My remark was more of a question. What would be the resolution differences, or maybe some differences in refresh rate and that kind of stuff.
On analogue scopes, you're seeing the actual wave as it scans across the screen. On a digital scope, you're seeing a rasterised frame by frame image of the wave after it's been sampled and processed, so the deflection only needs to be as fast as any TV CRT.
I have a 784D and the display has failed. Haven’t tried troubleshooting it yet, but if a replacement is needed this video will be a very helpful guide. Thanks for the clear run through of the process - excellent job on the video!
Nice Video- glad to see you back OM!
Thank you!
You are my saint.....!!!!
Dobra praca :)
Quite a project. Well done say.. Impressive machine too. I see that the old CRT uses magnetic deflection. I thought that only electrostatic deflection is fast enough for a scope. But, maybe a stupid question 🙂 what would be the reason of replacing the CRT? What do you gain performance wise?
I've got this oscilloscope with a broken CRT, so I had to replace it with something. As it was really complicated to get an orginal CRT, I decided to retrofit it with LCD. What do I gain more? There some aspects like: weight, power consumpsion, no X-Ray. Does it matter? I don't know. Perhaps it's critical for somebody... ;)
@polymath.electronics okay, if it was broken, more then legit 😁 My remark was more of a question. What would be the resolution differences, or maybe some differences in refresh rate and that kind of stuff.
On analogue scopes, you're seeing the actual wave as it scans across the screen. On a digital scope, you're seeing a rasterised frame by frame image of the wave after it's been sampled and processed, so the deflection only needs to be as fast as any TV CRT.
You can use old crt for other projects or like a monitor??
I have never tried to use it somewhere else.
@@polymath.electronics probably it's a vga monitor, I want to try it, but I have no one🥲
Tell people how much that lcd cost.
$350 as of November 2021 if the web site is still active.