Chosen Solution
Im connecting to the TV with new AV to HDMI converter and a new AV chord. I’ve tried cleaning the cartridges and the device but i cant get any sound to come through. Plugging directly into the TV AV ports I hear a sound for a second and then no sound or picture. Does anyone have any idea why this could be happening and what could fix it?
check and possibly use another AV cord. Just in case. Check the contacts make sure they are clean and not bend or broken. Double check the solder joints on the AV port for any cracks etc. is broke, here is the guide for the port. Check components around U1 which is your MAV-IC Digital to Analog converter (DAC) video/audio.
