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Hello all. I am in need of a service manual or alignment instructions for a connex 3300 HP.
Board...EPT360015c with dual mosfet finals.
Any help would be GREATLY appreciated, thank you to all.
Update......
Problem solved. At the front of the board (closest to the face of the radio) there is a plug where the wires from the mode switch plug onto the main board. Its marked FM AM USB LSB and so on. Directly behind this plug are two surface mount transistors (so I thought), turns out they...
I checked bias on it this morning and made adjustments according to the manual. I will check again to be sure. It does have the IRF520 mosfets in it and I know for sure they are good. The only thing I'm not certain of is the 2314 driverbeen replacing caps and checking voltages at points you...
What little audio it produces sounds good on another radio that is close by. The problem is that there is no swing to it. The only swing I see on the meter in AM mode is only about half a watt and it swings backwards from 5 watts dead key back to 4.5 when I audio into the Mic.
Thank you for you help Handy Andy. First let me shed a little more light on things here. I have a pretty nicely stocked bench with scope, Sencore CB42, freq counters and all the goodies. Now more about the radio, switch installed to turn amp off so I'm testing with the amp off. In AM mode and RF...
Hello all.
Radio..... RCI 2995DX
Board.....EPT695015BR
PROBLEM......Modulation
In AM mode on the external meter the modulation swings backward. In USB and LSB it swings to 200 no problem. Just very low modulation on AM. It just barely makes a little ripple on the scope. Any help would be...
Hello all. I need a little help please.
Radio.... RCI -2995DX
Board.....EPT695015BR
Problem...
Radio will not key. It shows TX on the display and the "ON AIR" light comes on but no watts.
Surface mounted component directly behind plug marked 8v CW FM AM US LS PA WX was burned on top. The part is...
Not sure about the FET's. Haven't got that far yet. Just got finished with the recap on the radio and counter board. Just turned it on and found the problem. It shows the correct freq on receive but instantly goes to 35 mhz when it's keyed.
Hi folks, need help on this please. I have a 2000girl on the bench that displays the correct freq on rx but changes to 35 mhz when keyed. I have a sencore sc3100 scope with built in freq counter which shows that the radio is in fact dead on freq when keyed so it seems to be a display only...
Hi nomadradio, actually I would like to replace both T2 and T3 just to be safe. I did actually locate a couple of the transistors for around 15 bucks each. I know the little box really isn't worth the money it will take to repair it but I just have a soft spot in my heart for odd things like the...
Hi all, was hoping someone here smarter than myself might be able to tell me where I can find a transformer for a sonar br-21 amp. Mine is the 12 volt version. Any help would be greatly appreciated.
Sonoma, THANK YOU VERY MUCH! This is exactly the type of information I need. I also want to publicly apologize, I sometimes get a bit out of sorts when I ask a simple question and people start telling me things like "oh you don't want to do that" or "you need to leave it like it is". I have...
Thank you both for the reply. I do understand that most people would like the expo kit and unlocked voice lock but that's not my cup of tea. I understand that there is more to it than just a couple of wires. In my first post I stated that the rest of the mod had already been reversed, meaning...
New member here guys so be gentle please. BTW, you guys have a great board here! I think this should be simple for some of you but I simply do not know the answer so i'm asking. I have just acquired a cobra 2000GTL (1993 production date) and someone has done a real hack job on it. It had uppers...
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