¿ªÔÆÌåÓý

  1. BITX20
  2. Topics

uBitx V5 no audio

 

Just finished wiring? up my Ubitx V5 this morning and connected a dummy load. It had a quiet shhh sound and when I turned on the volume I could hear noise that got louder as I turned it up. I did this twice with same result. Third time and where I'm sitting now is no audio whatsoever. Radio powers up, menus work fine but no sound. I'm pretty new to the electronics game so other than checking my wiring I'm not sure where to turn next. I've seen lots of no audio info but nothing for the V5. Any help greatly appreciated.

Thanks!
Randy
 

Randy

I am thinking the rig will not make much noise into a dummy load - the gain is purposely low.? So do try your normal antenna, and try headphones as well as speaker.?

As delivered the BFO may be out of alignment.? Perhaps another v5 builder reading this can suggest a starting point value for the BFO.?

Don't be surprised that many of us have a little struggle getting their rig to work when first turned on.?

Curt
 

Check the volume control with a meter!

At 25-03-19, you wrote:
Just finished wiring up my Ubitx V5 this morning and connected a dummy load. It had a quiet shhh sound and when I turned on the volume I could hear noise that got louder as I turned it up. I did this twice with same result. Third time and where I'm sitting now is no audio whatsoever. Radio powers up, menus work fine but no sound. I'm pretty new to the electronics game so other than checking my wiring I'm not sure where to turn next. I've seen lots of no audio info but nothing for the V5. Any help greatly appreciated.

Thanks!
Randy
 

Thanks for the reply. I just happened to have a spare LM386 on hand so I put it in and it solved the problem. Not sure why the first one went though.

Randy
 

Randy, please DONT give power supply morethan 12or 12.5v
If you have 13.8 only, try to? put two diodes 1n5408 in series and connect on positive line in series. While taking loD it would reduceto 12.4.?
The best is to Djust 13.8tosay 12 or12.5in supply itself.

On Mon, 25 Mar 2019, 9:18 am Randy <gliderflyer@... wrote:
Thanks for the reply. I just happened to have a spare LM386 on hand so I put it in and it solved the problem. Not sure why the first one went though.

Randy

 

Good call. I was setting my voltage at 13.8. I'll dial it down.
 

I can think of removing R71 and feeding 9V via a regulator to the LM386 chip.

Raj

At 25-03-19, you wrote:
Good call. I was setting my voltage at 13.8. I'll dial it down.
 

Why no more than 12v power supply???? Is there a specific issue? My Samlex provides around 13.6v



Teach your kids about taxes.? Eat 40% of their ice cream cone...


_._,_._,_
 

LM386 is 12V and 386-4 is 18V AFAIK.

Just change your chip..

Raj

At 25-03-19, you wrote:
Why no more than 12v power supply???? Is there a specific issue? My Samlex provides around 13.6v

1 - 9 of 9