homr836 Posted April 1, 2021 Share Posted April 1, 2021 Hi everyone, I recently acquired a PAL Vader that was spares or repair. I was having trouble getting it to tune to the telly so I opted to install the AV mod and take it from there. Mod installed, still no picture. So I started poking around with the multimeter and found I wasn't getting VCC to the mod from pin 3 next to the RF box. I chased the path back and I'm getting 5v on one side of L205 and about 500mV on the other. I checked resistance in circuit and it's measuring around 4.4k. My gut is saying change the inductor but what is the value of it? In fact, what is the purpose of it now the RF box is gone?? Can I just bypass with a shunt wire? Your advice is greatly appreciated. Quote Link to comment Share on other sites More sharing options...
homr836 Posted April 1, 2021 Author Share Posted April 1, 2021 Just removed it from the board and it's open circuit. Does anybody know what the value is please? Quote Link to comment Share on other sites More sharing options...
Voxel Posted April 2, 2021 Share Posted April 2, 2021 Try some bed time reading: http://www.robotsandcomputers.com/computers/manuals/atari2600_fsm.pdf 1 Quote Link to comment Share on other sites More sharing options...
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