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?

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?

Start from one end and measure each pin, write down what each one measures
and repost it to this forum. We then can assist with a bit more info. BTW
have seen many of these tuners just flat out fail, but become quite falkey
first.
"Mike" wrote in message
. ..
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?

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?

one other thing I noticed also, the sound is ok, but once in a while youll
hear it drift into some static like AFT is bad, but it only lasts a couple
seconds, and its fine again. the AFT adjustment had no effect on anything
other than cutting out the sound entirely.



"Mike" wrote in message
. ..
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?

Starting from the top (rear of tuner with F connectors)

(connector for grounds)
12
1


9


12

12


34
-10
6
5
5





"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?

will the tuner from a PTK195 lightbox work? i got one around here for parts.
bad conv supply. person didnt want it fixed and i got stuck with the guts.
hehe..



"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?

Different tuner....
Not even close..
"Mike" wrote in message
.. .
will the tuner from a PTK195 lightbox work? i got one around here for
parts. bad conv supply. person didnt want it fixed and i got stuck with
the guts. hehe..



"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?

are these right?


"Mike" wrote in message
. ..
Starting from the top (rear of tuner with F connectors)

(connector for grounds)
12
1


9


12

12


34
-10
6
5
5





"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?