kaghy2

Alright, I've posted before on this forum reporting I had a non-working Atari 2600A which had worked for a short period before my post. To Recap to that post, I've got it working for now. Not by replacing the voltage regulator (yet) but by reflowing the solder with a soldering iron and refilling some points with new solder. I am glad that worked, for now, like I said. My issue now is that the colouring seems bad or off, I've tried adjusting the color pot (yes, I found that out) but to no avail. I tested the game Demon Attack which I think should look like this: or this: And I must say I think the first one is not good for colour either. Anywho, second game I used was Cosmic Ark which should look like this: On my Atari, on the other hand, it has some colour but not all colour, like in Cosmic Ark the background should be in colour, on my system it's white only. Same goes for Demon Attack, the "demons" as in the two videos should be in colour, mine shows them in white and also the ship is not in the correct colour. Now after looking around on the web, the 2200uf 16V capacitor might need to be replaced, if so I was wondering if this would be a correct substitute: https://sinuss.nl/componenten/passieve-componenten/condensatoren/aluminium-electrolytic/aluminium-electrolytic-capacitors-leaded/1165377-mal202115222e3-cap-alu-elec-2200uf-16v-axial-vishay(it's a Dutch website since I'm from there...). If that's not the case, I might as well still replace the voltage regulator. What I also wanted to mention is that, once I had my Atari open I was feeling some components on temperature and damn that TIA was hot! So again, after lurking on the web, I tried prying it loose without damaging it and straightening its pins (it was seated incorrectly I think) and that did bring my system back actually with using a modern cable that I got from my cable company which is an RF cable too. (not small enough to fit on the plug in the Atari sadly...). Anywho, I haven't put my Atari back together yet in case I needed to resolder or replace anything after I reseated the TIA nothing was getting hot to the extent of the regulator which needs to process the power. Before I reseated the TIA, the TIA was the only thing getting hot, both the CPU and RAM were in a figurative way of speech ice cold! So my question is, to keep it short because I like to rattle on...: Should I replace the 2200uf 16V as a start, and then the voltage regulator, or just do both while I'm there? I don't want to mod my Atari for AV mod yet, because finding a replacement Atari is quite expensive around here. We don't find them on the curb as I've seen some other posts.

Thanks for the help anyway . Will look for another PSU in the oncoming days. Will just for the fun of trying it replace the regulator and see if that is the problem or not. If it isn't, at least that is ruled out. However I'm not sure which one to buy, looking on google I see many sites offering 7805's but I'm not at all sure which one to take. They all offer 5V 1A, and I thought it only used 500mA.... so that's double capacity... Anywho, ordering a soldering/desoldering iron as we speak

Problem here is I don't have another PSU to test it. And The readings I gave long before previous post (2-3V) was without a game cart in it. And yes, it's the same game that has worked before. Tried both Spiderman and Cosmic Ark. Spiderman was the first game where I got image and sound with... And tried asteroids too, which gave me image. That one needs cleaning though (ship was lagging out there)

Right, with a game cart in I get from the back 1-2 V reading (and powered on) And what I believe is 5V on the 7805 0.1V Reading. As I said the 7805 is hot-ish, and nothing else is running hot.

Hmmmmm, I've tested in power off and in power on. I get from that 1-3V readings at the 5V line you described. And ofc 0 in power off state, did measure the 9V going through from the power Jack. Or if I'm doing this completely wrong, blame on me... xD Third edit: I felt the regulator and it does get hot when power is on.

Once at home I will try again and feel if something is getting hot. I'm positive I had the multimeter at DC (since I looked at the manual before hand to be sure). But probably not correct measuring the 7805. Will post results!

I just read out my Atari's voltage going through. The power supply I use is a more than one kind of deal. I didn't want to blow a fuse in the house if the original would be bad... I think it already was anyhow. However, the voltage at the Large filter capacitor steadies around 3.33 Volt and the 5V regulator (7805) is at 1.something. Those are my readings anyway.

So, I finally got my Atari 2600 hooked up to my Panasonic Viera TX-37LZD800. Anywho, after trying for a week to get it working and finally finding Analogue tuning I went through all channels three times. Today, this afternoon, I thought let's try again. First, I went to an electronics store to get a new cable, then the guy said its probably not the cable. I thought alright, I'll try it again. Plugged the cable on the motherboard and went through channels, after two times of searching I was giving up hopes of not finding it. Then Suddenly (as in the Imgur link) I found signal, with sound! The game worked, the Atari worked! I had Spiderman in it at that time. then went and tried multiple games. Asteroids needs a cleaning up I think and Night Driver wasn't fully working (not the right controller). And then I thought, now that it works let's put it under the TV to play whenever I want. Placed it, hooked everything up, aaaaaaaaaaaaaaaand nothing. Channel 14 gave static, CH36 gave static nothing worked anymore. (I'm European based, Netherlands to be precise). I was expecting to get image at CH36 not CH14... Anywho, here's some photo's of the motherboard and the one time I had success and I could play... https://imgur.com/a/Tttf3 And it is taking in power...