is there a more detailed internal VGA guide?

**sixtyten** · September 12th, 2005, 07:58

I'm dying to do this mod, but, having a hard time finding a very good guide. My problem is mostly getting the VGA circuit. So maybe someone could direct me to the construction of a VGA circuit and then a little rundown of rigging it in the DC? Thanks in advance.

**ptr.exe** · September 12th, 2005, 15:22

I wrote this if that's too complicated then where's the problem? i'm happy to help

The circuit is easy to build using only simple components, there are nice big places to solder to, easy

**sixtyten** · September 12th, 2005, 22:42

Well, the big problem is that I have a hell of a time reading schematics.

**ptr.exe** · September 13th, 2005, 16:14

Do you not have any experience? that schematic is really simple. What dont you understand? do you know what the symbols mean?

If you want i can walk you through it, i can tell you step by step what to solder and where etc. would that help?

**sixtyten** · September 13th, 2005, 23:09

Originally Posted by ptr.exe

Do you not have any experience? that schematic is really simple. What dont you understand? do you know what the symbols mean?

If you want i can walk you through it, i can tell you step by step what to solder and where etc. would that help?

I've used schematics before, but even simpler ones. For guitar. I'm really handy with a soldering iron, but, I just don't really know anything incredibly technical.

**ptr.exe** · September 14th, 2005, 16:00

Okay well...

Just to make sure; Where one line crosses another that does not mean they connect on the circuit, only when there is a spot do they connect.

Do you understand the RGB bit? you just put a 220uF capacitator in between where the signal is coming from at the DC to where its going to the VGA socket, you solder one leg to the side with the DC and solder the other leg to the VGA side. You do this for each of RGB, then connect them all to the VGA socket, in the correct place.

Next is the sync bit, its a bit more complicated. For each; put a 150 ohm resistor in line from the signal from the DC, then after that take a 4700 ohm resistor solder one end to the +5V and the other end to the sync wire after the 150 resistor. Then take a diode and have the black end (depends on diode but most are like this, if not then which ever is the +ve end) soldered to the sync wire and the other end to ground (-ve). After that solder the wire to the socket in the correct place.

Do that for each sync.

Then you need a VGA switch. To tell the DC to make VGA pin 6 and 7 need to be grounded, so have a switch that can connect them to ground (-ve) so you can turn it off to use the DC on a TV.

And ground every black dot on the VGA socket.

Does that help? i can show you an example circuit drawn in bitmap, if you really cant picture this.

**sixtyten** · September 15th, 2005, 23:12

An example circuit would be a great help. I'm a really visual person. If it's not too much trouble to do that, anyhow.

**ptr.exe** · September 16th, 2005, 15:51

I'll start on it now and post later

i'll draw one on those plain boards that have strips of copper going across, you know the ones?

**ptr.exe** · September 16th, 2005, 16:16

Okay here...

First get a board and scratch off the copper in the places shown. then solder in the components, then solder wire going to the DC on the left and wire going to a VGA socket on the right.

Now just make that circuit and that's it.

EDIT: Just realised that it's quite small, if you copy and paste it into MSpaint or something and enlarge it, that may help.

Also those white things are diodes