Re: Spectrum Analyser TR4172
Hi Folks,
I have a TR4172 which is about 30db deaf ! I have full manuals and suspect that the 1st mixer is zapped. Thats the usual reason for deaf Spectrum Analysers. Anyone know a suitable substitute for the ring of 8 diodes ("D1" which only has a "house code" in the parts list). Because opposite sides of the ring are DC connected, I cannot see an easy way to test it without removing it. GUII OP's post of December 2011 sounds similar - was that problem resolved?
Regards, Brian G8MUE
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