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Vintage Radio (domestic) Domestic vintage radio (wireless) receivers only. |
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Thread Tools |
12th Dec 2019, 10:39 am | #1 |
Triode
Join Date: Nov 2018
Location: Swindon, Wiltshire, UK.
Posts: 43
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Hacker Sovereign II RP25
Obtained from EBay in very good condition. The seller said that the radio had worked and then suddenly stopped working. New batteries were fitted without any change in conditions. Fault seemed to be in the output stage as I was able to trace a signal at the input of this stage. About 16volts was also measured on this connector. All components are original and lockfit transistors are fitted here and in the rest of the circuit. I was able to trace a signal on T1 but nothing on T2. This morning I decided to inject a signal into the stage. Doing this on T2 the radio gave a pop and crackle and burst into life. The radio is working on all three bands. I have come across this problem on another Hacker. I wondered if anyone else has come across this problem? The signal injector I use is designed around a 555 'timer' IC that I found on the web. As the radio is working well I have decided to leave well alone. However there is one small problem. Radio 5 live on MW is coming in on 400m on the scale. The VHF is slightly out also but nothing very much. Is there a trimmer that I need to adjust to correct the MW coverage?
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12th Dec 2019, 11:13 am | #2 |
Octode
Join Date: Dec 2010
Location: St Ives, Cambridgeshire, UK.
Posts: 1,180
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Re: Hacker Sovereign II RP38
Hacker Sovereign II is the RP25, the RP38 is the Hunter, which one is it?
Andrew
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Invisible airwaves crackle with life. Or they should do. BVWS Member |
12th Dec 2019, 11:36 am | #3 |
Rest in Peace
Join Date: Mar 2011
Location: Basildon, Essex, UK.
Posts: 4,100
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Re: Hacker Sovereign II RP38
May have been a bad connection to the AF amp board.
Mike |
12th Dec 2019, 4:17 pm | #4 |
Triode
Join Date: Nov 2018
Location: Swindon, Wiltshire, UK.
Posts: 43
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Re: Hacker Sovereign II RP38
Hello Andrew,
Please accept my apologies,the raido is a Sovereign II RP25 |
12th Dec 2019, 7:00 pm | #5 |
Octode
Join Date: Sep 2017
Location: Bristol, UK.
Posts: 1,642
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Re: Hacker Sovereign II RP25
It's worth having a good look at that multiway plug/socket on the audio amplifier pcb. That connector wasn't one of Hacker's best moments, and often gives problems. Sometimes just rocking it a bit can make/unmake connections.
Mike |
13th Dec 2019, 8:45 am | #6 |
Triode
Join Date: Nov 2018
Location: Swindon, Wiltshire, UK.
Posts: 43
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Re: Hacker Sovereign II RP25
Gentlemen,
Thank you for your replies. |