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QCX Repair

 

Hi All, I am looking for someone hopefully local or at least in the UK to repair my 80m QCX. I will pay for the repair. My QCX was delivered fully assembled ?and worked perfectly for a time but will not now transmit. I suspect that I may have transmitted when the antenna was not connected although things appeared to go ?astray ?when I changed from 12 to 15 volts psu?

Roger Taylor
G4CGU
 

Hi Roger
Where about are you?? If its doing everything except transmitting then you're probably right that the output transistors have failed because of transmitting without a load on it.? I'd be happy to have a look if you can't find anyone closer or better qualified.? It is probably a matter of replacing Q1, Q2 and Q3 and confirming that the other transistors are OK.? I'm in south east Scotland.

All the best
Peter, GM0EUL
 

And remember a few weeks ago a new build went thru this... with fried finals, the rx was deaf until finals were changed... receive signal was rf-grounded thru the damaged finals so "nothing" was left for the receiver to work with... Last report here was that it was alive and working after replacing finals.


On Tue, Apr 9, 2019, 15:20 Peter GM0EUL <gm0eul@...> wrote:
Hi Roger
Where about are you?? If its doing everything except transmitting then you're probably right that the output transistors have failed because of transmitting without a load on it.? I'd be happy to have a look if you can't find anyone closer or better qualified.? It is probably a matter of replacing Q1, Q2 and Q3 and confirming that the other transistors are OK.? I'm in south east Scotland.

All the best
Peter, GM0EUL

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