0078265317 Posted February 6, 2013 Share Posted February 6, 2013 Ok,, so now i finally appreciate all the hard work that went into the heavy suckers 4 and 6 switches. The junior from ebay arrived today. Big holes in plastic and rattling inside. I opened it to fix it and I made it even worse. The bottom i s all cracked and big holes in the front. To be fair it was untested but that is the risk you taker sometimes. I just wanted the archer joystick with it however and stiff not bad just for that. Anyhow I'm not getting any video. But the red light is on when I press power. Can I assume the red light means its a good motherboard. Or is it junk now and not even for 5 bucks as good board or spare parts. My sears works. So its not my adapter and I used a regular rca video cable as suggested. Quote Link to comment Share on other sites More sharing options...
0078265317 Posted February 7, 2013 Author Share Posted February 7, 2013 I tried 3 different video cables and no luck. Well I guess back to the junk yard or ebay. Quote Link to comment Share on other sites More sharing options...
RickR Posted February 7, 2013 Share Posted February 7, 2013 Did you try switching the channel select switch? Quote Link to comment Share on other sites More sharing options...
0078265317 Posted February 7, 2013 Author Share Posted February 7, 2013 Yes. Quote Link to comment Share on other sites More sharing options...
karokoenig Posted February 7, 2013 Share Posted February 7, 2013 Sorry for the off-topic observation, but... In any other forum apart from AA, a thread title like this would absolutely not sound right. 3 Quote Link to comment Share on other sites More sharing options...
0078265317 Posted February 7, 2013 Author Share Posted February 7, 2013 ha ha, yes but this is not any other forum. Quote Link to comment Share on other sites More sharing options...
yllawwally Posted February 7, 2013 Share Posted February 7, 2013 Untested doesn't mean run over. The light just means you have power. It doesn't even mean that the power is good enough to run the machine, just that at least 2 volts is present. Do you get sound? Is the video black, or weird lines? When you look at the tv does it look different when the atari is powered on? Quote Link to comment Share on other sites More sharing options...
0078265317 Posted February 7, 2013 Author Share Posted February 7, 2013 Nothing completely blank. NO difference. Except once without a cart in I got a black screen with some white lines. But now nothing. Not even without a cart in. Quote Link to comment Share on other sites More sharing options...
Sanriostar Posted February 8, 2013 Share Posted February 8, 2013 Well, the Jr. is the best model to hack into a portable 2600, don't trash it! Quote Link to comment Share on other sites More sharing options...
0078265317 Posted February 8, 2013 Author Share Posted February 8, 2013 No I'm not good with mod skills. I'll just ebay it. Or you can have it for 10 bucks. Quote Link to comment Share on other sites More sharing options...
yllawwally Posted February 8, 2013 Share Posted February 8, 2013 Do you have a multi-meter? The easiest thing to test, is to see if there is enough power. If you measure on the 7805. It's a little block with a metal tab. It will be near the power cord. Measure the power from the middle leg to each of the other legs. One side should be about 9v. The other leg should be 4.95 to 5.15 volts. Quote Link to comment Share on other sites More sharing options...
0078265317 Posted February 9, 2013 Author Share Posted February 9, 2013 Yes but mine is on the fritz. So I'll get a new one. Quote Link to comment Share on other sites More sharing options...
0078265317 Posted February 9, 2013 Author Share Posted February 9, 2013 OK, so I just got a new meter. What setting do I put it on? Quote Link to comment Share on other sites More sharing options...
0078265317 Posted February 10, 2013 Author Share Posted February 10, 2013 Any idea?? Quote Link to comment Share on other sites More sharing options...
0078265317 Posted February 10, 2013 Author Share Posted February 10, 2013 Anyone?? Quote Link to comment Share on other sites More sharing options...
yllawwally Posted February 11, 2013 Share Posted February 11, 2013 You want it on Volts. You are expecting a 5 volt signal. Quote Link to comment Share on other sites More sharing options...
0078265317 Posted February 11, 2013 Author Share Posted February 11, 2013 This is the one I got. So what setting do I use?? 20k on the right side maybe?? Quote Link to comment Share on other sites More sharing options...
yllawwally Posted February 11, 2013 Share Posted February 11, 2013 Exactly the way it is shown in the picture. Putting the black probe to the center leg and touch the other legs with the red probe, one at a time. Quote Link to comment Share on other sites More sharing options...
0078265317 Posted February 12, 2013 Author Share Posted February 12, 2013 But the left side in the photo is dc voltage not ac right?? Quote Link to comment Share on other sites More sharing options...
+frankodragon Posted February 12, 2013 Share Posted February 12, 2013 The "V" icon with the line and the 3 dots is for measuring DC voltage. The AC icon is the the "V" and the tilde (~) above it. Quote Link to comment Share on other sites More sharing options...
+frankodragon Posted February 12, 2013 Share Posted February 12, 2013 This might also help in using a multimeter: Quote Link to comment Share on other sites More sharing options...
0078265317 Posted February 12, 2013 Author Share Posted February 12, 2013 This is the unit. 7805 is not next to the power in the back. It is lower left. Sorry if its a little blurry but my iphone 3gs is not the best, Anyhow if I use this view and plug in my ac adapter I get a red light. If I use the "v with the ~" and "200" setting on my meter I get 15.5v. That is if I use blsck probe on center and red as right leg. If I use black as center and red as left leg I get 10.1v. Quote Link to comment Share on other sites More sharing options...
Andromeda Stardust Posted February 12, 2013 Share Posted February 12, 2013 Do you have a multi-meter? The easiest thing to test, is to see if there is enough power. If you measure on the 7805. It's a little block with a metal tab. It will be near the power cord. Measure the power from the middle leg to each of the other legs. One side should be about 9v. The other leg should be 4.95 to 5.15 volts. I'm an ELET major. Use the 20V DC setting. It highlights "20" in white on your model. If you set the multimeter on AV volts to test a DC source, the reading will be garbage. If you use ohms, a low voltage will give you garbage results, and a high voltage could destroy the meter. In the image, the component you are trying to test is the voltage regulator. It is circled in red. The three red dots are where it connects to the motherboard. Try not to touch the probes to each other while testing or you'll cause a short. The voltage between the center and one leg will be close to 9V, and the voltage between the center and the other leg will be close to 5V. I had to replace the regulator and the green "chicklet" capacitor on my Atari due to fuzzy interferance. It looks like the PCB is in decent condition. Rather than throw it away, why not sell it to someone at Atariage for spare parts? Someone may enjoy fixing it up or using it for parts or mods. $10 sounds like a good offer for a non-working unit. You seem to be a novice at electronics, so it may not be worth your time to attempt to fix it, but don't just dump it in the bin. Quote Link to comment Share on other sites More sharing options...
0078265317 Posted February 12, 2013 Author Share Posted February 12, 2013 Ok, I did as you suggested. Yes I'm no good with soldering and junk so 10 is good. It'll probably cost 10 just to ship anyway. Anyhow on 20v DC setting black center and red right is 5.3v. And black center and red left is 3.8v. Quote Link to comment Share on other sites More sharing options...
yllawwally Posted February 12, 2013 Share Posted February 12, 2013 Well if you wanted to try to fix it. The first thing would be replacing the 7805. It's legs are large and are pretty easy to solder. They should be under 2 dollars at a radio shack. 1 Quote Link to comment Share on other sites More sharing options...
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