Greetings to the group.

I could please use some advice on troubleshooting my BITX40.

On initial startup, the current draw looked good, but the display
illuminated for a moment with black squares, went blank, and remained
illuminated but with no intelligence - a green screen of (hopefully not)
death as it were.

Tuning affects nothing.

I injected RF at 7.1 mhz to no effect, but when I injected IF signal,
everything seemed good from there.

The red LED on the Raduino board is lit.

I've double checked the wiring. There was no smoke, at least :)

I've checked the HF spectrum and hear nothing from the Arduino/syn board.

I'm pretty familiar with basic RF troubleshooting but just beginning my
Arduino journey so no explanation would be too basic.

Any thoughts? Is it possible the sketch is corrupted and should be
reloaded, or is there a recommended procedure for checking the Arduino
output and general operability? or a simple way to reinitialize things
and see what happens? Or for that matter to check the display for
function other than backlight?

Happily my uBITX is working well.

Thanks for any ideas.

Scott ka9p

On Jan 5, 2018, at 3:03 PM, Vince Vielhaber <vev@...> wrote:

Do you have a scope?

Vince.

On 01/05/2018 03:45 PM, Scott McDonald via Groups.Io wrote:
Greetings to the group.

I could please use some advice on troubleshooting my BITX40.

On initial startup, the current draw looked good, but the display
illuminated for a moment with black squares, went blank, and remained
illuminated but with no intelligence - a green screen of (hopefully not)
death as it were.

Tuning affects nothing.

I injected RF at 7.1 mhz to no effect, but when I injected IF signal,
everything seemed good from there.

The red LED on the Raduino board is lit.

I've double checked the wiring. There was no smoke, at least :)

I've checked the HF spectrum and hear nothing from the Arduino/syn board.

I'm pretty familiar with basic RF troubleshooting but just beginning my
Arduino journey so no explanation would be too basic.

Any thoughts? Is it possible the sketch is corrupted and should be
reloaded, or is there a recommended procedure for checking the Arduino
output and general operability? or a simple way to reinitialize things
and see what happens? Or for that matter to check the display for
function other than backlight?

Happily my uBITX is working well.

Thanks for any ideas.

Scott ka9p

--
Michigan VHF Corp.

Thanks Vince yes, but mostly analogue experience with it, S

Sent from my iPad

On Jan 5, 2018, at 3:03 PM, Vince Vielhaber <vev@...> wrote:

Do you have a scope?

Vince.

On 01/05/2018 03:45 PM, Scott McDonald via Groups.Io wrote:
Greetings to the group.

I could please use some advice on troubleshooting my BITX40.

On initial startup, the current draw looked good, but the display
illuminated for a moment with black squares, went blank, and remained
illuminated but with no intelligence - a green screen of (hopefully not)
death as it were.

Tuning affects nothing.

I injected RF at 7.1 mhz to no effect, but when I injected IF signal,
everything seemed good from there.

The red LED on the Raduino board is lit.

I've double checked the wiring. There was no smoke, at least :)

I've checked the HF spectrum and hear nothing from the Arduino/syn board.

I'm pretty familiar with basic RF troubleshooting but just beginning my
Arduino journey so no explanation would be too basic.

Any thoughts? Is it possible the sketch is corrupted and should be
reloaded, or is there a recommended procedure for checking the Arduino
output and general operability? or a simple way to reinitialize things
and see what happens? Or for that matter to check the display for
function other than backlight?

Happily my uBITX is working well.

Thanks for any ideas.

Scott ka9p

--
Michigan VHF Corp.

I had the same problem.? There are two orange wires. One on 5 pin connector and one on 8 pin connector.?

I hooked the one on the 8 pin connector to +12 volts and it should have been the one on the 5 pin connector

?that went to +12 volts. So I wound up with +12 volts on A3 of the nano Which killed the nano. I replaced?

the and programed it? and? put the wires in the right place now everything works as supposed to. Lucky I?

had a few spare nano's and could program them with no problem. Good luck. Dave? kc2ipx

On Jan 5, 2018, at 3:13 PM, Vince Vielhaber <vev@...> wrote:

Excellent! Pull the DDS plug from the board and put your scope on it. You should see a square wave around 5 MHZ (or less). If you see that then the raduino is working. If not the nano may be toast if one of the loose wires touched 12v. But one step at a time.

Vince.

On 01/05/2018 04:11 PM, Scott McDonald via Groups.Io wrote:
Thanks Vince yes, but mostly analogue experience with it, S

Sent from my iPad

On Jan 5, 2018, at 3:03 PM, Vince Vielhaber <vev@...> wrote:

Do you have a scope?

Vince.

On 01/05/2018 03:45 PM, Scott McDonald via Groups.Io wrote:
Greetings to the group.

I could please use some advice on troubleshooting my BITX40.

On initial startup, the current draw looked good, but the display
illuminated for a moment with black squares, went blank, and remained
illuminated but with no intelligence - a green screen of (hopefully not)
death as it were.

Tuning affects nothing.

I injected RF at 7.1 mhz to no effect, but when I injected IF signal,
everything seemed good from there.

The red LED on the Raduino board is lit.

I've double checked the wiring. There was no smoke, at least :)

I've checked the HF spectrum and hear nothing from the Arduino/syn board.

I'm pretty familiar with basic RF troubleshooting but just beginning my
Arduino journey so no explanation would be too basic.

Any thoughts? Is it possible the sketch is corrupted and should be
reloaded, or is there a recommended procedure for checking the Arduino
output and general operability? or a simple way to reinitialize things
and see what happens? Or for that matter to check the display for
function other than backlight?

Happily my uBITX is working well.

Thanks for any ideas.

Scott ka9p

--
Michigan VHF Corp.

--
Michigan VHF Corp.