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-   -   Building my own CRT chassis, need advice (http://www.videokarma.org/showthread.php?t=276926)

Devicemodder 10-14-2024 08:58 AM

Building my own CRT chassis, need advice
 
So, I've decided to build my own black and white chassis, based around the TEA2037A IC.

Got the HV Working, and the deflection partially working. Here's where I'm having issues. Horizontal works, but the vertical is very noisy, and not a smooth raster. What fo I need to do to fix this?

https://files.catbox.moe/dllhi1.jpg
https://files.catbox.moe/39leo9.jpg

Alex KL-1 10-14-2024 10:43 AM

Seems that the H freq is out... if signal (video) are being injected.

luRaichu 10-14-2024 11:19 AM

:jawdrop: This is a really neat project! I have a 5" Sony Watchman that I would love to convert into a raster/vector monitor. :ntwrthy: The only other thing I've seen like it is Eric Schlaepfer's CRT driver board (tubetime.us) but that's for electrostatic deflection tubes.

No comment on your sense of humor though... hah

Devicemodder 10-14-2024 12:12 PM

Quote:

Originally Posted by Alex KL-1 (Post 3260456)
Seems that the H freq is out... if signal (video) are being injected.

This is without video injected, but when I connect video, it displays the same. I'll look into adjusting the H frequency

Devicemodder 10-14-2024 12:14 PM

Quote:

Originally Posted by luRaichu (Post 3260460)
:jawdrop: This is a really neat project! I have a 5" Sony Watchman that I would love to convert into a raster/vector monitor. :ntwrthy: The only other thing I've seen like it is Eric Schlaepfer's CRT driver board (tubetime.us) but that's for electrostatic deflection tubes.

No comment on your sense of humor though... hah

Yeah, I add this silkscreen to all my boards. Had a spare tube, and didn't want to have it sit around unused... so I thought I'd try and roll my own chassis.

luRaichu 10-14-2024 12:33 PM

Quote:

Originally Posted by Devicemodder (Post 3260464)
Yeah, I add this silkscreen to all my boards. Had a spare tube, and didn't want to have it sit around unused... so I thought I'd try and roll my own chassis.

How much does it cost to build this chassis?

Alex KL-1 10-14-2024 01:23 PM

+1 for own personal projects, cool :thmbsp:
Seems to have even a linearity coil :cool:

BTW; maybe a interference in the H (making the lines jittery), or V circuit, like you first suspected, also, is good to check

Devicemodder 10-14-2024 05:02 PM

Quote:

Originally Posted by luRaichu (Post 3260465)
How much does it cost to build this chassis?

Not sure the total cost as most of my parts are salvaged from other busted electronics. The board though cost around $20 from JLCPCB, for 5 blank boards.

Devicemodder 10-14-2024 05:04 PM

Quote:

Originally Posted by Alex KL-1 (Post 3260468)
+1 for own personal projects, cool :thmbsp:
Seems to have even a linearity coil :cool:

BTW; maybe a interference in the H (making the lines jittery), or V circuit, like you first suspected, also, is good to check

Could be that. I'll check next time I'm at my bench. Supposed to have a blank raster, like if you removed the tuner from a TV set.


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