I dont have the pinouts of the tuner, so i cant test for voltages.


Whats funny about this whole situation is the tuner DOES come in enough so
you can actually watch the channel. But why wont autoscan pick up anything?


"Art" wrote in message
. ..
Have you tried heating or cooling the physical tuner assembly? If so what
effect was noted? Does the tuner react to physical tapping on it with a
non-conductive item? Possible the actual tuner is defective. Measure the
other voltages at the tuner assembly afc, B+, etc.
"Mike" wrote in message
. ..
I have a PTK169 that has some serious tuner problems. Im wondering if the
tuner is bad or not.

if you manually use the remote to put in the channel, the channel will
come in on either A or B, but is very snowy on the lower end. upper end
is slightly snowy.

When you try to do a autoprogram, it will set the tuner to A and air from
cable.

and the only channel that programs in is 91. the rest are rejected. If
manually tuned, its ok.

I read somewhere that C4143k will leak and damage traces, so i pulled the
cap, and see no damage or leakage. I replaced it anyway, with absolutely
no change.

I checked the 33V test point, and it shows 33.2v.

any ideas?