Astor PN-C24J AM Car Radio Repair
890 بار بازدید -
ماه قبل
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All solid state from 1968
All solid state from 1968 using mainly silicon transistors with 2 germanium transistors in the output stage.
A lot of repairs were needed! Many faulty, out of tolerance and unreliable components. The temperature and humidity extremes of being in a car accelerated the aging process on the components.
Needing to use a curve tracer to find faulty germanium transistors and having to use the LCR45 meter to check faulty polystyrene capacitors are highlights.
Note that both faulty capacitors were checked on a FET meter for leakage and found to be over 100 Meg ohms.
The LCR45 must measure the capacitor differently to give the correct reading. Does anyone know how?
ماه قبل
در تاریخ 1403/05/13 منتشر شده
است.
890
بـار بازدید شده