Devicemodder
10-14-2024, 08:58 AM
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
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
: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
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
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
+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.