Ok fellas. Just got a Superstar 3900F from France yesterday. This thing is strange for sure! Looks and acts just like a DX 88 however, the freq. display has 2 decimals. Does not show 27.185. It shows 7.185.0 and it is on freq. with other radios and external freq. counter. Now, inside there is a factory mounted slide switch off of the chassis with 3 wires to it. Has only 2 positions. I have no clue what it does.... Flip it and really nothing happens. Anybody have info or ideas? Where the RB button is on an 88, this rig has DFB. Acts like a noise filter or tone control of sorts. I got nothing. The serial plate says: American CB Dirler SA France,SS 3900. Serial looks to be 200067 and some other French crap. It is in great shape and receives great. Controls tight and respond like they should. Now for the bad, no tx power. Have tx audio. When I open her up, same freq. counter unit as my old 88 that I just fixed. Ok, cool. Now somebody added a little bread board with some components. A VR, 3 resistors, a diode and a transistor NEC A733. 2 wires go to main pc with 1 soldered to Jumper 83 and the other to ground. Then a 12v dc hot off of power switch and some sort of thermistor maybe?? ran under the counter unit with 2 wires. Part looks like a small ceramic disk cap but has 3 colors, red on top, purple middle and yellow on bottom. I remove hot wire to see what happens= R218 near final driver smokes and burns. Crap. I remove this whole assembly out. I replace R218 with 2 ohm metal film I have, apply power and still no TX but R218 stays intact= no burn. Sorry for long post but I may need to send this to good tech. Recommendations as to who can get me up to spec with this strange radio? Thank you gentlemen.