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Donkey Kong TKG-03 "vertical lines" / schematic? Donkey Kong TKG-03, 4 board version. ROMs: ok. Voltages: ok. Issue with "vertical lines" in "stagepicture" 25,50,75m etc.. shows as invisible lines through KONG and is more visible if "character ROMs" is removed.. and is correlated to the...

price check for atari video pinball pcb?

Hantarex mtc 9000 w/o the blue contrastpot. Bad shape when I got it, .. burned r105, r110, burned traces... someone have replaced flyback w/HR7107 flyback (china) tr20, HOT (bu508a) R105 hot B+ ~65vdc After a time a kind of "vertical collapse" appear on the screen (picture) New caps...

Fixing a Outrun Deluxe with a minor issue, a graphic glitch. A blue horz. line through the middle of the screen. in Test Mode everything checks "good" Seen it before?

Missprint in schematics? PSU section. X901 collector voltage? 145 vdc? I got 160vdc X902 collector voltage? 71 vdc? I got 45vdc B+ 120vdc Symptoms: The picture blooming/breath with white vs black scenes. Everything checked and rechecked in the PSU section, new solder and new x900...

Defender Early Ver. -> Blue&Black jailbars in the rugpattern. 1st: MPU Early Version. Symptom: No rug pattern at the right side. Black/Blue bars. (thin/many on the startup palette) Aciddamage traces on ram 5 at 1 bank. Fixed and checked.. New PSU, 4164, fresh solder, new ribbon cables etc.