Owner likes the 2 SW bands, other than find a broken one or related model
also with the same tuner TUX-020 , any ideas?
Courtesy of some Danish and Polish threads someone found out that the 80 pin
Philips tuner IC TEA6842H is likely the same as the one badged Sony
8-759-653-23 in this tuner. All DC at the tuner 19 pins agree with Sony
Schema and rails, Xtal lines etc agree with the TEA... datasheet. There is
local Xtal osc, serial data and clock line signals on engaging "SEEK" ,
front display shows changing f but the TEA pin 42 tuning V stays at 0.045V.
Nothing amiss DVMing around the variable cap diode , pushing IC pins if
loose, and no bad ESR local caps. Whatever occured happened in a garage
during a cold spell of weather, vehicle rarely used.