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QCX died after one QSO

 

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I¡¯ve had my 40m QCX built and working with WSPR for a while and decided it was time to try a CW QSO.

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All went fine, worked a local contact for over 30 minutes and then shut it down.

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Now when I connect power I get the dread top row of blocks.

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I¡¯m at a loss as it was working fine and then this.

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I have limited test equipment so the next step I guess is check the voltages as per the instructions and check for obvious soldering faults.

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Any pointers would be appreciated.

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Andy

G0OEY

?

?
Clint Sharp
 

Have you done the micro controller start up mod detailed on Hans¡¯ QCX pages?

On Sun, 16 Sep 2018 at 08:15, Andy Kerrison <drewk101@...> wrote:

I¡¯ve had my 40m QCX built and working with WSPR for a while and decided it was time to try a CW QSO.

?

All went fine, worked a local contact for over 30 minutes and then shut it down.

?

Now when I connect power I get the dread top row of blocks.

?

I¡¯m at a loss as it was working fine and then this.

?

I have limited test equipment so the next step I guess is check the voltages as per the instructions and check for obvious soldering faults.

?

Any pointers would be appreciated.

?

Andy

G0OEY

?

?

--
Clint. M0UAW IO83

No trees were harmed in the sending of this mail. However, a large number of electrons were greatly inconvenienced.
 

Yes I have. Before it would start ok with a couple of on/off cycles.
Ham Radio
 

Try pulling?out the micro-controller and reseat.?

If no joy, recheck all the solder joints and touch up as required.
--
73, Bernie, VE3FWF
 

Pulled out the micro-controller and reseated it.

That did the trick.

Thank you so much everyone for the help

Much appreciated.

Andy
G0OEY
 

Two things,

Check the socket pins for good soldering and insure all the flux has not gotten into the socket.
(rise well with Isopropyl alcohol.)

Allison
Ham Radio
 

Glad you got it going without too much trouble.
--
73, Bernie, VE3FWF
 

Well the blocks are back after an evening of running WSPR ok.

Switched it on tonight and blocks along the top again.

Reseated the micro-controller, no luck, re soldered the socket pins and still no luck.

I'll start checking voltages when I have more time.
Ham Radio
 

Review all the solder joints with a magnifier and touch up as required.

If still no joy, I would order another micro-controller.
--
73, Bernie, VE3FWF
 

If yours was an early kit, replace L5.

On 17/09/2018 19:46, Andy Kerrison wrote:
Well the blocks are back after an evening of running WSPR ok.

Switched it on tonight and blocks along the top again.

Reseated the micro-controller, no luck, re soldered the socket pins and still no luck.

I'll start checking voltages when I have more time.
 

Mine is No.1300
Not sure if it's an early one or not?

Think I may order a replacement micro-controller.

If its not that at least I will have newer firmware.

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