You say only receives "on 80 and 20 meters". With a 9MHz filter that would be tipical? problem in a convencional radio using 5-5.5MHz VFO. But I have not gotten into the frequency mix of this receiver yet. I will try to check. I guess it needs a frequency adjustments in case one Xtal is not oscillating, and is needed for other bands.
In the meantime look for voltages in RF unit J015. When transmiting in HAM mode it should be something like 13.5V (red wire input) and 13V (white wire to PA) this is called TX13.5. It is very easy just open the lower case, J015 is easy to see. If you dont have over 13V in TX13.5 you have a problem. Then unplug J015, plug it turn it 90? ACC to keep the red wire? to transistor, white in the air,? and measure again. pluged 90? (no output) and un pluged. This can tell you if you have a problem in transistor or in the PA. In case of failure there are only three posibilities
1.- Damage source (13.5V PS or RL01 in RF unit)
2.- If RL01 delivers 13.5V Problem in RF Q01 if no voltage out TX13.5 disconnected
3.- If output of Q01 was over 13V with white wire of J015 removed, then problem was not in RF unit. Too much intensity in PA. Has to be handled soon, so it does not damage PS o RF units, See blasted tantalium in video. In this circunstance of extreme 13.5V >>> 3V when PTT is ON the radio does not transmit and strange sounds can be heard in the speaker. Don't insist or something will blow up. In the meantime place J015 turned 90?ACC or remove it, to make sure 13.5TX does not come to PA. Anyway there are other capacitors in 13.5V line of PA. So better think about inmediate open/check of PA. It is easy to remove, only 4 screws in the back and the whole brik goes out. Before the grilled cover side to side has to be removed, for what you have to remove one by one the radio covers. I always replace one when I remove the other. Take care not to damage wires, specially the one to the RAM battery.
Take in mind that this transistor RF Q01 is a switch, without a mod (Tx in GEN) this transistor RF Q01 is a switch to allow only 13.5V to pass to PA with MOX ON (or PTT) when transmission is allowed (HAM and no transverter). It cuts in Rx, if transverter, o in GEN.
