BillVoet

Ok. I will check the long leads and solder joints first then try the CPU. Is it normal for the CPU to get warm/hot (I can still touch it) after about 5 minutes of being on?

The TV is an older CRT TV. Not sure how to tell if it is NTSC or PAL. I got this Atari as a kid in the late 80's. Attached is a picture of the Serial number sticker (it's an A1??). I have tried with the TV on both Channel 2 and Channel 3 along with the switch in both positions on each channel. I have tried about 10 or 12 different games (both 2600 and 7800) all have the same result. I just tried Frogger but do not get any sound. Voltage coming from the power supply is 12.7V when power is off and 10.6V when the unit is powered on. I have 4.96V out of the regulator.

Hi all. This looks to be a great forum for Atari tech. I have 7800 that I am trying to get back to working order. I am able to solder but do not have much skill as far as troubleshooting logic circuits. Here is what I have: The Atari will power up but I just get lines on the screen. I also do not get sound or if I do it is just a buzzing noise. I have tried cleaning the contacts on the cartridges but that has not helped (this is usually all I need to do for my old NES). Attached are some pics of the board along with a pic of the screen. I should also mention that the chip on the lower left of the board (CPU chip I think) starts to get warm after being powered on for a few minutes. Any help getting this back in working order would be appreciated.