Hi folks! I hope someone else has run into this on this radio, but I think they are rare. It is a Montgomery wards GEN 719A. It will transmit just fine on SSB receives good on SSB and AM but when you key up on am, the transmit light will change to red and there is no needle movement of any kind, no power output on wattmeter. I have replaced the AM regulator with an ECG152 hoping it was breaking down under load, but no go. I can not find a schematic so have no idea what voltages to look for. it uses a Uniden chassis very much like a Cobra 142gtl. I have tried the Cobra 142gtl schematic but there are too many changes in component location numbers to help much. Please help if you can. It is in pristine cosmetic condition, I hate to just see it setting and doing much of nothing. Thank you in advance, Mark.