Philips India radio B6CA37A/01 (Algemeen)

door Pandu Rajan , 29.07.2015, 12:28 (3407 dagen geleden) @ Sieme

Dear friends

I located the fault for the SW1 band in the above set. The oscillator trimmer C42 was faulty. I replaced the 30pf trimmer capacitor.Also a shielding foil is provided under the gang condenser C17-C18 which is fixed to the chasis with a metal strip and two screws. During the restoration I had to change the copper foil and I forgot to completely tighten the metal strip and therefore it was not making proper contact with the Chasis. After tightening the two screws properly I have been able to align the SW1 band properly.
Now my question is what is the purpose of this shield and how far this copper foil shielding is important for the working of the different bands?

Regards

P.Rajan