Syfo-Dyas

Thankx, so will any Oscilloscope do?

Thats it, I want a NUN-Joy!

Alright, so this sux then. What sort of Multi-meter should I buy for testing in that case, and how do I go about testing? I know I have all the correct parts in the right places and am going to later modify the photos to show where each part goes. I also made sure that all the connections that were connected on the bottom of the board stayed that way. Not sure why I am not getting video, but it makes me a very sad panda. :/

So without the last two steps I should be getting video, is that what you are saying? Cause all I got is black. Here are some pics and the direction from the project. I've more on the way. =================== Part list: R124, R137, LUMA MOD 75 OHM Resistor (Purple,Green,Black,Gold) R129, R131, R132 1k OHM Resistor (Brown,Black,Red,Gold) R133 3.3k OHM Resistor (Orange,Orange,Red,Gold) R135 240 OHM Resistor (Red,Yellow,Brown,Gold) R138 3k OHM Resistor (Orange,Black,Red,Gold) Croma MOD 200 OHM Resistor (Red,Black,Brown,Gold) C112 .001mf Capacitor (.001k) L12 Ferrite Coil (No Marking) Connect Wire Soldering Iron/Solder R128 6.2k OHM Resistor (Blue,Red,Red,Gold) R130 2.2k OHM Resistor (Red,Red,Red,Gold) R134 10k OHM Resistor (Brown,Black,Orange,Gold) R136 100 OHM resistor (Brown,Black,Brown,Gold) R139 4.7k OHM Resistor (Yellow,Purple,Red,Gold) C111 3.9pf Capacitor (3.9) C113 100pf Capacitor (101) 5 Pin Din Connector Q7,Q8,Q9 3904 Transistor (2N3904) Solder Nick or a Solder Sucker The 600xl mother board like the 800xl mother board was set up so that it could be used in different countries. With slight changes in the number of components or compontent values used on the mother board. Fortunately for the 600xl ownder one of these options was a monitor output for an overseas 600xl model. Most of the 600xl mother boards have all of the necessary component locations on the moather board but are missing the components necessary for a composite video output. This mod requires that you remove your channel 2-3 select switch, cut one trace on the mother board, add components to the mother board and modify the bottom part of your 600xl case in order to make the monitor jack accessible from the outside of the case. Composite Video Mod Disassemble your 600xl computer down to the mother board level. The first thing to check is whether or not your mother board can be modified for a monitor output. (There were several different rev's and manufactures of the 600xl mother boards.) One and a half inches behind the 7 pin din power connector (next to the on/off switch) you should find a section of the mother board where there are missing components. You will see the white silk screen numbers and letters on the mother board but no components at those locations (see figure 1). If this is so then you can proceed with this mod. First thing to do is to remove the channel 2-3 switch. To do this, turn the 600xl mother board upside down then apply the solder sucker to the 3 points where the 2-3 channel switch is soldered down. After all the solder has been sucked and the switch removed, you'll then want to remove the solder from the five points behind where the switch originally sat. Now turn the mother board right side up. Look at the five points that you just desoldered. Point 1 is on the left of the top row. Point 2 is the center, and 3 is on the Right. 4 is on the bottom left, and 5 the bottom right.Now that we know which point is which, turn your mother board over and cut the line that connects point 2 with point 5. Turn the mother board right side up and solder the DIN Connector into the five point location. Next replace (solder in) the missing components. The above parts list has the components and the locations on the motehr board (example R131) where they go. On some of the 600xl mother boards it is hard to read teh silk screen ptringing where the missing components should go. (See figure 1). Even figure 1 is sometimes hard to read! So here is a listing of the missing components starting right to left behind Q7 transistor, R131, R130,R128,R129,C111,R133,R134,R132,L13 (existing coil), R138,C113,R125 existing resistor, R123 exisisting resostor. In front of R123 is R124, to the left of R124 is R136, in front of R124 is L12. Left to right of L12 is R127,C112,Q9,R139,Q8,R135,Q7. Now you have composite video! To mod the 600xl bottom case I used a vermont American brand 3/4" hole saw (no. 18312) and hole saw mandrel. (No. 18301) We modified (using an allen wrench) the hole saw mandrel so that the hole saw itself cut into the plastic first before the center 1/4" guide drill did. To get a clean looking hole I put about 5 strips of masking tape over the plastic where I was going to drill the monitor hole Using a center line between the power plug hole, T.V. modulator hole and cross hair over the letter "a" in the word 2-chan-3 I drilled the modulator hole. Luminescense mod Add a jumper wire and 75 ohm resistor between the emitter of Q6 (see fiture 2) and pin #1 of the 5 pin din connector. Chroma mod Add a jumper wire and 200 ohm resistor between the emitter of Q9 (see figure 2) and pin #5 of the 5 pin connector.

Sources and all! Can't wait to give it a try!

I look forward to giving it a run! Thankx!

I've covered it all now except the last two steps: Add a jumper wire and 75 ohm resistor between the emitter of Q6 (see fiture 2) and pin #1 of the 5 pin din connector. Chroma mod Add a jumper wire and 200 ohm resistor between the emitter of Q9 (see figure 2) and pin #5 of the 5 pin connector. Got audio no video, but I presume that's normal since I've not hooked up the Luma yet right? HEading to store to buy two last needed parts.

OK, small problem. I don't know what the .001mf, 3.9pf, and 100pf Capacitors look like.

Much clearer, I should be good now and will take photos and post a tutorial... ...assuming all goes well that is. Thankx!

Looking good, will check out!

I'd consider a 5200 if there is an easy to install S-Video MOD.

You know I think we are all wrong, we should have been suggesting an Atari 400 this whole time.

That and Bruce Lee are my obsession. Two of the best 8-bit games ever!

Albert: Can't wait, very exciting! Mclaneinc: No, his dog and I had Pavlov taken out so that he wouldn't intervene between us and our passions ever again. And before anyone critiques my non-traditional love for this dog, I just want you to know that I got the gene, so back off! ;P

Hello all. I'm at it again, modding yet another Atari, but am a little lost with this one. At first I thought it would be easy, till it got to the part where I'm supposed to solder in all the components into the open spot on the mother board. The picture below shows the area where I am supposed to do all the soldering, but I'm having a hard time figuring out what is what, I.E. which connection is R124, which one is R136, R137, etc. Some of them seem obvious, but some look like they could be one of two points. Also Sloopy mentioned that there is an easier method... ...any guides on this?

Just having a little fun, but ya, I'd say the same thing, just get an Atari 800XL and consider that RAM expansion as they just plug in. Can't get any easier than that. Orpheus: Are you a Legendary Pink Dots fan or something? I ask because of your title. Sloopy: What MOD did you use, the method I am trying has me a little lost. In fact I'm about to make a post about it.

Heh, ya prolly! It's amusing to look back at how confusing all this modding business seemed to me once upon a time. Honestly, all the MODs I just listed are SIMPLE, except maybe the Video Output mod, it takes a few minutes, but again is pretty easy.

Interested!

Suddenly I feel like Pavlov's dog.

Again... The demo just leaves me itching for more.

IRC!

I'd be quite happy to pay for XL/XE compatable XEX image. Quite happy indeed!!!

I've yet to find one. Sob.

Or 600XL with, monitor MOD, plug and play RAM and perhaps an NTSC to PAL ANTIC switch off to expand your library of playable games.

A shame.