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SteveCG · 29th Aug 2017, 1:22 pm

The VHF section of this Hacker no-longer works. Long Wave and Medium Wave are fine.

Being of the age where the VHF/FM IF unit used the dreaded AF114 Transistors I assumed that it was one of them that had 'tin-whiskered' - however this, I think, is not the case.

The radio uses a German made tuner "G*****" the rest of the name is illegible. I have tried looking for the LO leakage signal - nothing. I've even tried looking for the 10.7 Mc/s IF output whilst tuning across the band - nothing there either. So I suspect I have a failed LO transistor.

My question is this: Are these tuners generally reliable?

BTW the supply voltage to the tuner was about 7.5 volts

29th Aug 2017, 1:22 pm	#1
SteveCG Nonode Join Date: Jun 2009 Location: Herefordshire, UK. Posts: 2,495	Hacker RP18 Sovereign The VHF section of this Hacker no-longer works. Long Wave and Medium Wave are fine. Being of the age where the VHF/FM IF unit used the dreaded AF114 Transistors I assumed that it was one of them that had 'tin-whiskered' - however this, I think, is not the case. The radio uses a German made tuner "G*****" the rest of the name is illegible. I have tried looking for the LO leakage signal - nothing. I've even tried looking for the 10.7 Mc/s IF output whilst tuning across the band - nothing there either. So I suspect I have a failed LO transistor. My question is this: Are these tuners generally reliable? BTW the supply voltage to the tuner was about 7.5 volts