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This is NOT a Sony PVM - CRT monitor RGB mod for retro gaming. TVS CM-14DNA security CCTV CRT 

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What separates a consumer CRT from a professional video monitor? The TVS CM-14DNA CCTV monitor made by Taiwan Video Systems has the robust build you’d expect from a security monitor with the simplified engineering of a consumer CRT. Equipped with more than 400 TVL’s, the phosphors in this Chunghwa shadow mask are reminiscent of a small arcade monitor when retro gaming in 240p.
With stock composite and S-video, all that was missing were the all important RGB inputs to unlock its full potential. Sooo were the upgrades enough to elevate it to the equivalent of a broadcast video monitor to edit the eventual upcoming Fast & Furious 64? Watch to find out.
As a side note, if you have ever needed a replacement Sony badge for a 9 or 13” PVM, BVM or consumer Trinitron, then I show how to scrap one from a Sony speaker that you may already have or that you may find cheap at a thrift store. Bigger Trinitrons usually have a larger badge.
Topics covered: Composite vs S-Video vs RGB, TVL’s, Dithering, Mister FPGA composite video blending, TATE, using a Sony badge from an official Sony speaker to replace on a 14” PVM or BVM (or to give a non-Sony CRT some flair)
#crt #crtgaming #retrogaming #pvm
00:00 Intro
02:09 RGB Mod and overview
04:04 240p Video comparisons
06:53 TATE
07:56 Sony badge replacement
08:45 Final thoughts

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17 июн 2023

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Комментарии : 41   
@koopaklaw4605
@koopaklaw4605 Год назад
Virgin PVM buyer vs chad RGB Modder
@nmurnmur
@nmurnmur Год назад
Nice mod man, and nice video and comparison shots. Really shows how adding RGB makes a lot of difference. I have another weird 14" PVM knock-off, a TVLogic DBM-150HD, made in 2007. Samsung tube, shadow mask, multiformat, 800TVL, and RGB in, so definitely not too shabby. I'm in Aus as well, so maybe we got variety of these copies closer to the end of CRT's popularity, as I know real Sony PVMs were very expensive.
@MarcoRetro316
@MarcoRetro316 Год назад
Thanks! I had to read that twice when I saw multi format, that sounds like an incredible monitor and essentially the shadow mask sibling to the PVM 14L5 and would be a much more sophisticated build than this TVS monitor. Congrats!
@crt_rex
@crt_rex Год назад
Digging that chill Snatcher music at the beginning. Anyway, wow, I didn't know there were more of those "not TV, not PVM" monitors, I only knew of the CVM-1270 and CVM-1271, so it's very interesting to learn more about yet another Sony (or not a Sony, lol) monitor I have never seen before, and here being modded with RGB. As usual, outstanding video. I'm not sure why YT didn't send me a notification, I have the bell on. Oh well, glad I still caught it though. Loved the hospital bed shot, freaking adorable. Also, I tend to borderline beg sellers that ship CRTs my way to pack it well, I link to a short packing video and have a simple diagram and still, some of them just flat out ignore it, it's sad. I even had one that said "duly noted" and still packed like crap, luckily it was a 70s PVM all metal. My PVM-1270 that came from the US wasn't so lucky, it's sad. I feel your pain, my friend. Also, same here, flashcarts for the win, only games I really care about get purchased physically, or new releases. Great video as usual, friend.
@MarcoRetro316
@MarcoRetro316 Год назад
Good ears and thanks heaps again for the kind comment! I should link a video for packing next time, didn’t even think of that. Your woodgrain Trini and panelling is looking great too! I’m learning as well through trial and error what works best to help making these videos. Keep it up Rex!
@crt_rex
@crt_rex Год назад
@@MarcoRetro316 Yes, there's a very short video (it has to be short for you to have a shot at them having interest), and it has it all, double-boxing and all. The seller that shipped that very Trinitron I got that you spoke of listened, and packed it very well. I wish I could link it here, but it's easy to find. Your videos are great and you're funny, trust me. The tate bit was a laugh riot, everybody here laughed out loud, well done. Don't worry about numbers too much, you will do well here, just make what you like and it will eventually pick up. I love your style and humor, and I just have a soft spot for Aussies, y'all are just great. And thank you, I'll be playing lots of games and uploading accordingly. Next set (after the current one uploading) will be interesting, 1970s consumer Trinitron imported from Japan, RF only. I imported it because of the RF! Thank you for the compliments, always a pleasure talking to you.
@MarcoRetro316
@MarcoRetro316 Год назад
Thanks again Rex! Glad those Tate and hospital skits resonated well
@Vvewa
@Vvewa Год назад
Couple of points this video is hitting home to me. Nights soundtrack, I bought it on steam last night for while I wait for my saturn 3d controller to arrive. I've bought back a crt when I got my head around the basics of rgb modding, so glad I did as its a nice set and all that was missing was some caps and resistors as its a universal chassis samsung with composite jacks soldered on the 21 pin scart socket on the board. I've got a spare 14" RCA/thomson with scart that uses that chunghwa tube and looks like low use, if it was in a panasonic, sharp, sanyo set you wouldn't even question its a chinese brand tube.
@MarcoRetro316
@MarcoRetro316 Год назад
Nights is one of those chill but engaging games that I can play no matter what mood I’m in. My first RGB mod was much like yours but on a TEAC and just filled in some missing components on the chassis. The Chungwha ain’t bad at all and is actually a lot sharper than another 14” consumer I RGB modded with a Sanyo tube
@CMskittles
@CMskittles 9 месяцев назад
Nice video! This Chunghwa tube is very common in North American market 13" CRT TVs from the 2000s. Looks quite nice with the RGB mod, though not as "scanliney" as higher resolution pro monitors.
@MarcoRetro316
@MarcoRetro316 9 месяцев назад
Thanks! I’ve seen a few of these Chunghwa’s in later CRT’s. You’re right, they aren’t heavy on scanlines but they are sharp enough to not give the vertical bar-effect on lower TVL consumer sets. Definitely no pro-monitor level
@deanagoes2791
@deanagoes2791 9 месяцев назад
I have a 14 inch tube TV from the Changhong brand. This TV has 2 composite inputs, 1 s video and one RGB input and one composite output. It's a bit unique because this is the commercial version which has an RF tuner. And yes, the tube is from the Chunghwa brand which is very good in its color production.
@MarcoRetro316
@MarcoRetro316 9 месяцев назад
Is the RGB connection BNC or Scart?
@deanagoes2791
@deanagoes2791 9 месяцев назад
@@MarcoRetro316 No.. it's just an ordinary RCA standard.. once again this is a regular consumer commercial TV. I think this is also only for the Asian market. I still use it because the AV input varies.
@MarcoRetro316
@MarcoRetro316 9 месяцев назад
@deanagoes2791 that is a very unique TV
@JoséGuadalupeCadenaMuñoz
@JoséGuadalupeCadenaMuñoz 6 месяцев назад
Los monitores crt son lo máximo para el retro 💪😎🍻
@MarcoRetro316
@MarcoRetro316 6 месяцев назад
Si si!!
@jamesm1083
@jamesm1083 6 месяцев назад
I have to say this mod is cool, I just did an rgb mod on a Samsung but I used 220 ohms instead of 75 for termination. I do not know how you increased voltage on the blanking line with a pull up resistor, did you just connect one leg to the jungle chip and the other leg to another place on the board? Sorry I’m just getting into electronics and trying my best to understand
@MarcoRetro316
@MarcoRetro316 6 месяцев назад
Thanks! The pull up resistor was honestly trial and error as I left the blanking pin in circuit, otherwise had I isolated the pin then it I would’ve connected voltage as required. I’m curious, for 220ohm termination, was that to achieve the desired peak to peak voltage, or that’s what the datasheet stated? I’m learning much the same as you
@MrXMaximus
@MrXMaximus 10 месяцев назад
Thx for video. I have pretty simmilar CRT. TVS 21DXA, which >500 lines. I am at state of finding OSD RGB pins for Jungle chip. Can you tell, where you obtained 3.3v for activation pin?
@MarcoRetro316
@MarcoRetro316 10 месяцев назад
Hi! This one had a TDA8361 video chip and pin 21 was for RGB switching. Instead of introducing voltage, I kept the pin in circuit and just added pull-up resistor to which it achieved RGB blanking. Normally I would isolate the pin and tap 5v from the voltage regulator and drop it down to ~3v with a voltage divider. I suggest you look at the datasheets for the voltage regulators you see on the chassis to find the 5v regulator and go from there
@MrXMaximus
@MrXMaximus 6 месяцев назад
​@@MarcoRetro316Well, returned to mod. Got 5V CCD supply current (pin 31). If I correct, that what needed. Now I must apply to pin 17 3.5V. How to lower 5V to 3.5V? I am pretty far from schemes, but I did some Arduino projects at university. I can only think about DC-DC converter, but you used something different. My jungle chip is LA76818A.
@MarcoRetro316
@MarcoRetro316 6 месяцев назад
@MrXMaximus a simple voltage divider will drop 5 to 3.5v. Search for a voltage divider calculator and plug in a few resistor values that you have on hand, example, 5v with 100ohm and 230ohm voltage divider will net you about 3.5v
@MrXMaximus
@MrXMaximus 6 месяцев назад
@@MarcoRetro316 THX a lot. Will reply in month on result. I forgot 0.1 capacitor and must find it somewhere.
@MrXMaximus
@MrXMaximus 6 месяцев назад
​@@MarcoRetro316Replying. Did the mod, but have issue... I see definitely RGB signal, but it extremely blurry. I have modded PS1, which can't do colored NTSC. If I connect it over composite/S-Video it is black and white signal. Over SCART RGB MOD, it is colored now, but as I said, it is impossible to play, because of blur. What could i do Wrong? I used 75 Ohm res to every color and to the ground, from every color 0.1uF capacitor. Each color goes to jungle straightforward. When OSD FS off, I can see clear composite (black and white). OSD FS ON, blurry rgb.
@jbt5175
@jbt5175 Год назад
Holy shit, so you're telling me I can buy a pair of shitty sony speakers at the thrift store to badge my PVM? FINALLY
@forrestcool991
@forrestcool991 3 дня назад
Hey Marco I have a CM-21DXA I'm hoping I can use this info to RGB mod mine
@MarcoRetro316
@MarcoRetro316 3 дня назад
That’s an awesome pickup! I’m honestly not sure if they’re using the same chassis/video IC. Only way to know is to open it up and see if the video chip matches this one and if capacitors on the RGB lines are grounded
@overdriver99
@overdriver99 Год назад
nice video!
@sonyx5332
@sonyx5332 Год назад
In my view, the composite here looked better. 🤔
@MarcoRetro316
@MarcoRetro316 Год назад
The camera never really captures it that well but I do see less appreciable difference with a courser tube like this
@mr.noneofyourbusiness4176
@mr.noneofyourbusiness4176 7 месяцев назад
Is it possible to mod a CRT to have an HDMI input?
@MarcoRetro316
@MarcoRetro316 7 месяцев назад
*Technically* yes. But the HDMI signal needs to be converted to analog before sending it to the TV. The resolution would also need to be 15KHz by downscaling the video to 480i/240p
@mr.noneofyourbusiness4176
@mr.noneofyourbusiness4176 7 месяцев назад
@@MarcoRetro316 Okay thank you, I was just planning on setting my RetroTink 5x up to a CRT.
@dpg2004
@dpg2004 Год назад
TA-TE means Dad in Macedonian lol
@MarcoRetro316
@MarcoRetro316 Год назад
🤣 it’s also nannies in Italian 🤌