|
Nederlands Forum over Oude Radio's |
Re: TV tuner
Geschreven door acch op 25. Okt 2007 06:25:10:
In reactie op: Re: TV tuner geschreven door Maurice ;code-E op 24. Okt 2007 18:13:06:
Thank you very much Maurice for your reply.This is the picture of the tuner.It was in a box labeled Philips but no other data.I have downloaded many Philips TV schematics
to search for this tuner and i found that model 19tx530A has a similar tuner if (a=1,m=2,h=3,d=5,e=6,l=7,k=8,n=9,f=10) and we are left with the unlabeled 4,11,12.
The 19tx530A manual did not have the tuner schematic but thanks to the 23CN376A manual you have send as it has the tuner schematic ,according to this schematic i measured the resistance between d and e (5 and 6) and it was 10 Ohm,between f and n (10 and 9) and it was 57 Ohm (39 Ohm in the schematic),between L (7) and pin 6 of PCF801's socket and it was 0 Ohm ,between h (7) and pin 2 it was 22kOhm ,between m (2) and pin 8 it was 13 kOhm,between a (1) and pin 1 of PC900's socket it was 1.6 kOhm,between m and pin 5 of PC900's socket it was 1 kOhm.So (a=1,m=2,h=3,d=5,e=6,l=7,k=8,n=9,f=10). For the unlabeled 4 measures 6 kOhm with m (2),11 measures 4 Ohm with d(5) and Ohm with e (6) and 12 measures 1 Ohm with ground.
Thank you again Maurice.