The Defpom Forum, for RadioMods, S&M Software and Music by The Defpom

Looking for schematic and component layout revision diagrams for SuperStar 3900 with EPT390014B board. I have Galaxy rev 1.3, 1.7 and 2.0 but none of these are exact match. Any assistance would be greatly appreciated.

Zodiac, Thanks for the reply. I seem to be missing something here... One cut wire marked RB controls Beep. One cut wire marked +10K controls freq shift. There are no loose wires laying around in the chassis. Without knowing where to attach the other side of the switches, this is an open circuit. Do ...

Thanks HomerBB... Lot's to digest here. I'll try and drop by to see you some time next week. PM me with when would be a good time mid to late week.
Thanks,
RStephen

Zodiac/Homer I have been able to locate only two EPT3600-14B board layout diagrams. Rev. 1.3 and Rev.2.0. Neither of these revs show my EXACT component layout. The direct link below is for EPT3600-14b Rev. 1.3. I couldn't insert image as it is 4+meg. In looking at these board layouts, I see the (ora...

I have a EPT3600-14B board. I am looking for circuit layout for the different Rev's of this board. I currently have Rev. 1.3 and Rev. 2.0. Neither of these resemble my Superstar 3900. I'll keep collecting Rev's until I find it. Any assistance would be greatly appreciated. Thanks, Below is my EPT3600...

Zodiac... SWR/CAL switch does not pull out. ALC and FM deviation I am assuming are trim pots on the board??? How should these be adjusted? HomerBB... NWA me 2. I did find a number (EPT360014B)on solder side of board. Radio didn't come with mic or antenna. I did test to see if it would power up. Whe...

Greetings, :banghead: I recently acquired a SuperStar 3900 for free out of a wrecked semi. I know truckers are notorious for Mod's and do not know if any have been done to this radio. My intent was to explore available Mod's and then look at radio to see if any had been done to it. This is where the...