Re: Need help I put volts on the speaker connection. Ouch. Smoke.

Daniel Isaza All Messages By This Member #26674 Sorry, no RF here, that's even easier, just connect some headphones along the audio path until you recover the audio signal from previous stages. you may need some amplification. toggle quoted message Show quoted text On Tue, May 16, 2017 at 2:04 AM, Daniel Isaza <hk4dei@...> wrote: Well, I'm not the most experienced radio builder/repairman, but looking at the schematic, I think you could just have fried C111 or the LM386 itself. Can you check for a signal on pin 5 of the LM386? Try following your signal path by looking at the schematic until you recover it, an RF probe could help Dan HK4DEI On Tue, May 16, 2017 at 1:31 AM, Jim McKay <mckayjim65@...> wrote: Oops. I feel like a berk. Honey I smoked the BITX. ? I just got my BITX40 set up and A Ok on receive. I disconnected everything as I was putting it all in a box but when I put it back together I connected the Power Amplifier voltage to the Speaker PCBplug. There was smoke and an acrid smell from the area of the speaker pcb plug. I think I have fried my board. No obvious signs of damage like bulging capacitors or broken tracks but doesn’t work now. Raduino still A OK but no sound on receive and no power out on transmit. ? Gutted. Where to start fixing my mistake ??? I am not experienced in repairing electronics so please can somebody help me. Feeling stupid. Thank you. Jim

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