Wolfrin

I have a roku 55 inch 4k led tv and I do not own a CRT. I have it hooked up via yellow,white,red connected to the tv with a yellow,white,red cable connector plugged into the composite port on tv. https://www.amazon.com/Roku-composite-cable-yellow-models/dp/B01LZ6FZAA It was weird for me at first cause I was always so used to just plugging it in to tv. I dont really like the connector.

Honestly never tried this but I'm going to check it now. I checked it out and the led turns on and off instantly.

I checked the schematic of the Atari 7800 and all the capacitors are at the right values.

I have one last question about my Atari 7800. I have the av mod installed and everything hooked up the way multiple manuals have told me to hook them up. When I turn on the system it takes about 5 seconds for the display to show. Then when I turn it off you can see the screen for about two then it goes black. Is this normal or do I have to look for something? I have watched a couple YouTube videos and when they turn the system on the screen displays immediately. I don't know if its a faulty av board or some capacitor.

Yeah that makes sense I didn't really think of it that way.

I found out it was a bad solder joint i re flowed the solder and added more and it works fine now. Thank you for this advice I checked this first and I had continuity just a loose solder joint. It is kinda weird this is the second time I have found a spot on the board that didn't have much solder or there was missing solder. Could it have come from the manufacturer like this?

I got the av mod installed and I hooked up a controller. The joystick works like in space invaders i can move left to right but the fire button does not work. Any suggestions on what it could be?

I will I ordered a lot of 20 for them for 3 bucks so i will put the c57 back and replace the other one. Thank you again.

I switched the terminals. I also found the leg of the conductor facing the power port had no solder and was moving freely. I added solder and plugged in power and it works now. I wont be able to see it run until i get a kit to add av to it because i removed the old connection due to not having any way to connect it. Thank you very much for your help i would have never learned any of this without your help.

i have the power connectors backwards let me fix that first

I have the system plugged in and the power port reads 9.12v. When I put the black lead on negative terminal of power port and put the red lead on the black inductor leg facing the power plug i get 8.96v. When I put the black lead on negative terminal of power port and put the red lead on the black inductor leg facing the controller ports i get 8.72v. When I put the black lead on black inductor leg facing power port and put red lead on r53 leg facing controller port i get nothing When I put the black lead on black inductor leg facing controller port and red lead on r53 leg facing controller port i get 8.35v. When I put the black lead on r53 leg facing controller port and red lead on black inductor leg facing controller port i get -8.35v With red lead on r53 leg facing controller port and black lead leg facing power port i get 8.32v I get no reading trying the other way. red lead cr5 leg facing power port with r53 legs facing power or controller port i get 0.23v When I switch to use the black lead on cr5 leg facing controller port and r53 legs facing controller or power port i get -0.23v. When i put red lead on cr5 leg facing controller port and black lead on cr5 leg facing power port i get 0.25v. When i put red lead on cr5 leg facing power port and black lead on cr5 leg facing controller port i get -0.21v. 9.13v is going into cr5 via black lead on negative terminal of power port and red lead on cr5 leg facing controller port My cr5 band faces the power plug too I just double checked and the cr5 isnt reading properly at all in ohms and c57 is completely missing from the board and i dont know if the big capacitor is bad or not. There is no sings of bulging and no leaking fluid.

when there is no power connected i placed the red lead on the bottom lead of cr5 and the black lead on the top of the black resistor. I get -60.6 and when i put the black lead on the bottom of the black resistor i get -60.6. When I put the red lead on the black resistor and the black lead on cr5 i get nothing on the meter. I try swapping to the top of the cr5 to get any reading and i get nothing on my meter. Also when I put the red lead on the top and bottom of the black resistor and the black lead on the cr5 top lead i get nothing.

The one next to the black one is burnt out due to me having the positive and negative power supply wires wrong. I watched a YouTube video and found out the right orientation of positive so I switched them to the right terminals. I think when power went through the board when it was wrong it blew some capacitors and the zener diode. Let me check this other thing out though.

I found r53 and with the leads one way i get 0.54 and the other way i get 0.45. When I choose dcv i get nothing but in the ohms setting I get these readings.

I am looking for r53 but i cant seem to find it on the schematics.