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Thank you for the replies! I am decent at soldering and want to ensure that this machine works for a long time to come... If I were to replace the sockets, does someone have a suggestion on the best ones to use and a possible source? Or is someone out there a pro and can go through the board...

Reseating the ROMS seems to have resolved the issue - hopefully it stays!

Or is there someone here who specializes in 720 boards that does repairs?

Thank you for the advice - Any idea which ROM sockets could be suspect?

Rebooted - Adjusted the size - colors are definitely off and the zig zag remains

Yes I haven't done any adjustments to the monitor yet, this was just the inital test, so definitely still work to be done. What concerned me was the zig zag line and the colors to the one side of it

Hello! Are there any Atari experts available that can assist me with a 720 Graphics issue? I am finishing up a restore for a friend and just fired up the 720 to play the first actual game and have noticed this strange zig zag line. On one side of the line, the graphics seem fine, but on the...

PM sent about 720 harness if it is still available

I figured the R/BK and BN lines were correct to connect the the +5 and G lugs on the switching PS but I just wanted to make sure. I don't think the Sense lines are required so it should be ok with out them i'm guessing.

Do we have any 720 wiring experts in here? Normally I can figure this stuff out with the manual pretty easily, but this time around I have a hacked 720 harness and the wiring colors seem to be off from the manual I have... Can anyone confirm if these chopped off wires are the wires that should...

Yes we will need a whole monitor tube and all - bonus if it is on a frame that will fit a 720

I think it is safe to say any 25" Medium res monitor would do... I'm actually doing the restore on this 720!

Most of these CP's have been converted with the exception of Galaga... Top Row: Galaga, Pacman converted to ?, Frogger converted to Qbert Bottom Row - Both were Nintendo Donkey kongs converted to something else I can take more pics if there is something someone out there would like to see...

I'll second that! Matt let us know what we can do to entice you!!!

Correct... freeplay with Attract!

I would also love a Dr. Mario HSSK / Freeplay kit... I wonder if Matt Osborn is still active...

Ok, latest update, I tested the chassis on another CRT - still no raster, b+ still at a perfect 108 - I haven't figured out how to test pin 6 on the flyback yet... Being that I have tested the flyback and crt, the issue has to be on the signal circuit per the sanyo troubleshooting guide... (I'll...

Great info so far! Using the sanyo troubleshooting guide - my current situation points to either the CRT, FLYback, or signal circuit... I swapped in a new flyback last night with no change... I can try another CRT today but it sounds like the problem may be the circuit... While I am not a noob...

Good morning KLOV! I have been sifting through past threads but can't seem to find one quite like the issue I am having and was wondering if anyone has any ideas or maybe has experienced this... Sanyo 20 EZ - Came to me non-working... I set up a test bench to see what signs of life it was...

I'm about to do a bunch of video on fixing up a Donkey kong I just picked up... Monitor rebuild, and fixing up the joystick too... I'll do it all on YouTube in the coming weeks - If you want to check out my channel it is https://www.youtube.com/channel/UCOQpzWRAbZLrRvILzY7oBew