Philips radio BCA495U (Algemeen)

door Pandu Rajan , 01.02.2019, 08:58 (1911 dagen geleden) @ henkk

Dear Mr. Hennks

Thanks your reply. I am attaching a sheet from the service documents of the set BX495U. This is identical to BCA495U. You can see that the anode voltage of valve B3 UAF42 has been mentioned as 45V and the screen grid voltage is 38V. So the anode voltage is higher than the voltage at g2. I think this is normal. You have attached the data from the model BX505U. Both the sets being electrically same then I do not know why this difference is there? Even in BX485U the voltages are 45V and 38V. In BX505U the anode voltage is less than the g2 voltage? In both the sets the incoming voltage given as 220V ac but the voltage at C1 is 190V and at C2 it is 160V. But in BX505U it is given as 175V and 145V. Around 15V less.
I have traced the fault of the MW band. It was my mistake. The resistance of the coil S16 is 5 ohms whereas I was looking at the continuity part. The wire from the Junction of S16 and C11 going to terminal 20 of the band switch wafer 2 was getting short. This has been rectified and the MW band is now O.K.

Regards
P.Rajan