johnfalc
Well-Known Member
I just repaired and aligned my old bench receiver, a 500TX ... what a sweet machine when running well and aligned properly! The Fisher and Scott receivers and tuners of the late 1960's are astonishingly listenable.
This example had a shorted diode in the power supply and a leaky germanium signal diode in the muting/stereo switching circuit, plus some intermittent switch contacts in the switch assembly supporting the Autoscan tuning. Fun to diagnose and repair (although it is challenging to get to the bottom of most boards in the unit, especially the FM/MPX section.
Anyway, the front panel (thanks to a prior owner, the neighbor who gave it to me decades ago) marked the front panel with his driver's license number ... not an issue for me when it is part of my service bench but, if I ever want to make it part of a period-correct classic system (I have a spare pair of AR3a to match it with, plus a Dual 1219) or decide to sell it, then it would be nice to have a new front panel.
Let me know if you have one or have a suggestion.
Thanks, John
This example had a shorted diode in the power supply and a leaky germanium signal diode in the muting/stereo switching circuit, plus some intermittent switch contacts in the switch assembly supporting the Autoscan tuning. Fun to diagnose and repair (although it is challenging to get to the bottom of most boards in the unit, especially the FM/MPX section.
Anyway, the front panel (thanks to a prior owner, the neighbor who gave it to me decades ago) marked the front panel with his driver's license number ... not an issue for me when it is part of my service bench but, if I ever want to make it part of a period-correct classic system (I have a spare pair of AR3a to match it with, plus a Dual 1219) or decide to sell it, then it would be nice to have a new front panel.
Let me know if you have one or have a suggestion.
Thanks, John