Philips radio BCA628A (Algemeen)

door gertjanrhe , Gooi, 25.04.2022, 22:26 (730 dagen geleden) @ Ouwe Schipper

the heater voltage should be 6.3V but is far to low. This causes a low emission at the various tubes which makes that the high tension voltages are higher because the load current is much lower. It seems to be half of the nominal value. Maybe there is a short in a heater circuit in one of the valves? You can check it by removing them one by one.

--
De techniek was in de jaren 40 veel verder dan menigeen zich bewust is