Quote:
Originally Posted by zeno
OK got the Sams.
IC 400 & Q202 are the AGC semis. Also some eletrolytics
C420, 215, 216, & 211. Also C130 1mf probably mounted
on tuner at AGC terminal.
There is NO AGC adjust at all.
Normal range at IF board pins are
TA22 4.43- 11.31VDC
TA21 4.62- 9.56VDC
Tough to call this one could be AGC or IF dont think video.
Hard to tell not being there.........
PM sent
73 Zeno  |
All I could do with is IC400 and Q202 was clean and check the connections.
C420 is a .22uf cap and it checked perfect.
C215 is 10uf 16V it check 13.8uf so I changed it with a 10uf 50V it checked as 10.3uf.
C216 is 1uf 50V it checked 1.4uf so I changed it with the same that checked as .974 uf.
C211 is 4.7uf 25V it checked 6.08uf so I changed it with 4.7uf 50V that checked 4.97uf
on C130, there were 3 of the 1uf 50V capacitors on the tuner. They all checked 1.31 or higher so I changed them all with 3 new 1uf 50V caps.
TA22 was 4.05V
TA21 was 4.64V
Thanks for all the information. I'm willing to try any suggestions.
Here is the link to a video of it playing after replacing the caps.
http://youtu.be/A7nO-bvzaHc