Hi and welcome back to the 8-Bit Guy.Thus, I'm certain you all have seen this little TV in a ton of my episodes.
I've been involving it for quite a long time, and I've really had this in my ownership beginning around 1997.
I have a little story to educate you concerning that.I was really working at AST PC.I worked in the technical support division and I really have a ton of tales concerning that.Furthermore I really desire to assemble a portion of those little accounts for a video sooner or later.Yet, something that really occurred around 1997 is that AST was having some monetary
issues and they were really being purchased out by Samsung.What's more, something Samsung needed to do to assist with enrolling the trust of all their recently gained workers was to give them each of the a gift.Also, we had the choice of getting either a little TV like this one, or a VCR, or a microwave.I really decided on the TV.Also it's really been a truly phenomenal little TV.Presently, I need to call attention to that when I initially got this, it was 1997 and I was 22 years old, and I was living in a 1 room loft with my recently hitched lady of the hour.Indeed, at the time we had very little cash and this really turned into our room Television and we really stared at the TV on this.This will be, this little 13 inch TV, it's difficult to envision, this is really what we observed Television on each evening for likely two or three years.Along these lines, throughout the previous 15 years or something like that, this has become basically a screen for me.I don't actually utilize the TV part of it any longer.Truth be told, I was unable to regardless of whether I needed to in light of the fact that simple TV doesn't exist any longer.In any case, it makes a great minimal composite screen for connecting to a Commodore, Nintendo,
or then again Atari, or something to that effect.Yet, it has been drawn out into the open, more than once, throughout the most recent a while,that it is really conceivable to mod shopper TVs like this to show a RGB signal.In particular, a simple RGB signal.Presently, for what reason would I need to do that?Practically every PC made since the last part of the 1980s has either upheld some kind of RGB video signal, or only completely required a RGB screen.Be that as it may, there are a wide range of norms.So the Amiga, for instance, utilized this 23-pin connector.The Apple IIgs utilized this 15-pin connector.
IBM CGA and Tandy machines utilized a 9-pin connector.Furthermore obviously, VGA is a kind of RGB signal too.
A RGB signal normally comprises of 3 separate wires conveying the red, green, and blue transmission.There is additionally ordinarily a sync signal and a ground.Obviously, any Color CRT TV needs to break the sign into RGB eventually on the grounds that that is the manner by which it is conveyed to the rear of the cathode beam tube.In any case, that is a high voltage signal at the back, so preferably you'd need to take care of the RGB signal some place on the low-voltage piece of the board.We should dismantle this one and see what we can find.Alright, this is all standard stuff for a TV from this time.
First thing I'll need to do is release the cylinder.This spring gives off an impression of being associated with DAG ground, so I'll join my gator cut to that.I'll connect the opposite finish to a screwdriver.Also I'm not actually expecting anything since this has been controlled off for quite a long time and mostTelevisions from this time have a release resistor.Furthermore that's right, there's nothing.I'll feel free to eliminate the attractions cup.Furthermore now I simply need to begin turning off things.I'll begin with the actual cylinder.Furthermore ultimately, the board will come out.This thing is somewhat dusty.I'll feel free to hit it with some packed air.Alright, so seeing this board, there are simply two chips we want to zero in on.One is this miniature regulator.This chip drives the on-screen show, tunes channels, pays attention to the controller, and so forth This other chip here is the thing that is regularly alluded to as a wilderness chip.Pretty much every TV from this time-frame has one.This chip does a large portion of the sign handling.Something the Jungle IC does is it takes in the composite video sign, and afterward translates that into RGB and results it to the high voltage piece of the TV.Be that as it may, it likewise acknowledges a direct RGB signal from the miniature regulator for the onscreen show.However, to know when to change to that, there is a different line called the blanking signal, which the miniature regulator will yield when it needs to utilize the screen.Along these lines, what we really want to do is tap into this RGB signal here and take that to the rear of the Television.And afterward we want to find 5V some place on the board and run that to a switch at the back of the TV that we can use to constrain the blanking signal at whatever point we need, so thatthe RGB sign will abrogate everything.There's as yet one piece of the riddle left.You actually need to get sync from some place, indeed, we can utilize the customary composite infofor that, in light of the fact that the wilderness chip is intended to overlay the RGB on top of a current sign,so it will in any case be searching for the sync signal from the composite info.Alright, so that is the harsh clarification of how this functions.Presently, I'm not going to delve into incredible insights regarding resistor esteems and stuff like that since each and every TV will be somewhat unique.Indeed, simple gadgets isn't actually my solid suit.I really got a great deal of help from a person named Mark Cowan who chart
0 Comments