Hello all,
I accidentally plugged my internal battery into the AUX AF jack instead of the AUX +12 jack. You can imagine what happened. I fried the firmware, which was okay because it needed to be replaced anyway. Now that the new firmware is in, the receiver is deaf. I traced that problem to U11 on the RF Board (Detector). There is no signal going to the BFO, and pin 6 is 'microphonic'. The signal from the IF Amp/Filter seems to be fine, and all of the DC voltages on the pins of the NE602 are to spec.
I do not have much experience repairing my K2. Are there any 'gotchas' I should know about with regard to the detector/bfo interface? I only want to take the thing apart once if I can help it.....they don't call me sparky for nothin'.
Thanks,
Jim
I accidentally plugged my internal battery into the AUX AF jack instead of the AUX +12 jack. You can imagine what happened. I fried the firmware, which was okay because it needed to be replaced anyway. Now that the new firmware is in, the receiver is deaf. I traced that problem to U11 on the RF Board (Detector). There is no signal going to the BFO, and pin 6 is 'microphonic'. The signal from the IF Amp/Filter seems to be fine, and all of the DC voltages on the pins of the NE602 are to spec.
I do not have much experience repairing my K2. Are there any 'gotchas' I should know about with regard to the detector/bfo interface? I only want to take the thing apart once if I can help it.....they don't call me sparky for nothin'.
Thanks,
Jim
______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected]
This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
