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Re: Faulty Juma TRX2

Hi Adrian, Thank you for the assistance, yes you are absolutely correct, Q2 is gone. I checked as per your email and it is a short. I don't have a similar transistor to hand so will order a replacement and see how goes. The radio is working at the moment so hopefully no other damage has been done. O...
by M0ZHN
17 Jul 2020 11:49
 
Forum: Juma Discussion
Topic: Faulty Juma TRX2
Replies: 4
Views: 506

Re: Faulty Juma TRX2

The fault was traced to C14 on the Control DDS Board which had developed a short. After replacing it the radio turns on straight away without pressing the power button, also cannot switch it off with the power button any more. Could it be that Q1 and/or Q2 have gone faulty as well? How to check with...
by M0ZHN
16 Jul 2020 09:42
 
Forum: Juma Discussion
Topic: Faulty Juma TRX2
Replies: 4
Views: 506

Faulty Juma TRX2

Good evening, My TRX2 has been sitting on the shelf for some time, I finally picked it up with a view to update the software. I switched it on and everything was working fine, I was enjoying listening to 20m band. Next day I switched it back on but the fuse in the Juma blew. I replaced the fuse toda...
by M0ZHN
15 Jul 2020 15:30
 
Forum: Juma Discussion
Topic: Faulty Juma TRX2
Replies: 4
Views: 506

Juma TRX2A

Hello,

I have a TRX2A that I purchased about 7 years ago and it is working great. I was wondering if it is worth doing a firmware upgrade? My Juma is still with the original firmware and I have not carried out any hardware or software modifications to it so any advice is appreciated.

73 Elia, M0ZHN
by M0ZHN
22 May 2020 22:06
 
Forum: Juma Discussion
Topic: Juma TRX2A
Replies: 0
Views: 588

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