Please turn off "Stable Volume" in the video playback setting (the first menu item after clicking the gear icon) as for some reason, this new RUclips playback feature made the video much noisier than usual.
Awesome ! You could check to see if the back pads can be reconnected there must be a via somewhere to take it down the stack up. None of this explains why the internal speaker isn't working unless the jack cuts it off as plug inserted but you can follow speaker wires back now and if necessary wire directly to the most convenient point. Having found the audio output ok can't be much to it to get it full functional it is after all a single chip and a mono signal or at least one speaker. Would be great to see a few more repairs Kerry !!...cheers.
Well, the black soldermask makes the circuit board much harder to work with. But I agree, I just need to trace it a bit more. Another challenge is that the chip is on the underside of the PCB when the portapack is plugged in so can't do realtime measurement easily.
Nice! Dare to make a bodge-wire fix by guessing where the trace has to end at the amplifier circuit? Or connect the speaker wire as a bodge-fix to the headphone jack?
Not as simple unfortunately as I did some testing after the video was recorded and some of the traces routed via inner layers of the PCB. I could just connect the headphone jack output directly to the speaker but it means I'd most likely lose the mic input. Will need to find the actual board layout to make sense of how the headphone jack is wired.
@@KerryWongBlog If there is anything left of the via you can solder a wire to it, then see where it routes to. Only 2 wires, and you can bet both or one lands at the speaker, and the other probably goes to a pad elsewhere, but if you get even poor connection with the via you can get the speaker running again.
@@KerryWongBlog True, but even looking at the layout of that headphone socket, and a multimeter, will give a pretty good idea as to the speaker feed, and you then just have to add the one or two jumper wires for the speaker, as it is likely the switch in there goes direct to one lead, and the other goes to the amplifier. See the speaker lead that is common, to both socket and audio IC, and the other will be the broken one.
Thats crap quality. The headphone socket should have had pins going through the board, not just surface mounted pads. If that wasn't possible, it should be held in place with glue. The previous owner must've put too much force on the headphone cable.
The jack has pads that do nothing but mechanically attach the jack to the board. Because those pads did not lift off as well, it is clear that the jack was never mechanically married to the board. Meaning, a manufacturing defect. Maybe you should approach the manufacturer. Or, at least go back in and add some type of glue to support the jack... A glue that can be removed... I like Shoe Goo, better than hot glue. It is in the shoe department, where the shoe polish is kept. HTH. Cheers.
Your result proves that the two jack contacts that are missing pads must be the speaker connections to the jack. You can confirm this with a simple ohmmeter. Connect the speaker directly or add bodge wires to bypass the trace to the speaker connections in the board. You are lucky you didn't tear off the middle two pads. Anchor that jack with glue!
Please turn off "Stable Volume" in the video playback setting (the first menu item after clicking the gear icon) as for some reason, this new RUclips playback feature made the video much noisier than usual.
Awesome ! You could check to see if the back pads can be reconnected there must be a via somewhere to take it down the stack up. None of this explains why the internal speaker isn't working unless the jack cuts it off as plug inserted but you can follow speaker wires back now and if necessary wire directly to the most convenient point. Having found the audio output ok can't be much to it to get it full functional it is after all a single chip and a mono signal or at least one speaker. Would be great to see a few more repairs Kerry !!...cheers.
Well, the black soldermask makes the circuit board much harder to work with. But I agree, I just need to trace it a bit more. Another challenge is that the chip is on the underside of the PCB when the portapack is plugged in so can't do realtime measurement easily.
Nice! Dare to make a bodge-wire fix by guessing where the trace has to end at the amplifier circuit? Or connect the speaker wire as a bodge-fix to the headphone jack?
Not as simple unfortunately as I did some testing after the video was recorded and some of the traces routed via inner layers of the PCB. I could just connect the headphone jack output directly to the speaker but it means I'd most likely lose the mic input. Will need to find the actual board layout to make sense of how the headphone jack is wired.
@@KerryWongBlogThanks for this honest "I already tried and failed" answer!
@@KerryWongBlog If there is anything left of the via you can solder a wire to it, then see where it routes to. Only 2 wires, and you can bet both or one lands at the speaker, and the other probably goes to a pad elsewhere, but if you get even poor connection with the via you can get the speaker running again.
@@SeanBZA Thanks, I will give it another try. So far no luck yet. Was hoping to find the actual board design and it would be much easier.
@@KerryWongBlog True, but even looking at the layout of that headphone socket, and a multimeter, will give a pretty good idea as to the speaker feed, and you then just have to add the one or two jumper wires for the speaker, as it is likely the switch in there goes direct to one lead, and the other goes to the amplifier. See the speaker lead that is common, to both socket and audio IC, and the other will be the broken one.
Thanks enjoyed learning something from your experience.
Thats crap quality. The headphone socket should have had pins going through the board, not just surface mounted pads. If that wasn't possible, it should be held in place with glue. The previous owner must've put too much force on the headphone cable.
The jack has pads that do nothing but mechanically attach the jack to the board. Because those pads did not lift off as well, it is clear that the jack was never mechanically married to the board. Meaning, a manufacturing defect. Maybe you should approach the manufacturer. Or, at least go back in and add some type of glue to support the jack... A glue that can be removed... I like Shoe Goo, better than hot glue. It is in the shoe department, where the shoe polish is kept. HTH. Cheers.
You can also solder some wires from the amplifier ic to the headphone jack👍
Your result proves that the two jack contacts that are missing pads must be the speaker connections to the jack. You can confirm this with a simple ohmmeter.
Connect the speaker directly or add bodge wires to bypass the trace to the speaker connections in the board.
You are lucky you didn't tear off the middle two pads. Anchor that jack with glue!
Yeah unfortunately, the ripped off pads seemed to originated from the inner layers as I was not able to buzz out the traces.
@@KerryWongBlog so just wire the speaker directly to the back two tabs of the headphone jack/switch. No need to buzz them out.
Exact same problem mine just broke why don’t they fix em
Properly
Hi
This IS a hackrf clone?
Yes, it's a generic clone.
@@KerryWongBlog Does it work correctly?
Like the official?
@@liboy34I don't have an official one, but from what I can tell everything is working as expected.