Sears 27443238190 and GE 26GT620F01 TV Problems

Y

yeahright

Guest
Hi. I have the two sets listed above and both have fairly strange issues.
(Strange to me anyway...)

The Sears set died a couple of days ago. The screen is predominantly white
with tinges of color in the background. When I hit the front panel controls
I can see them responding on the OSD. There is no audio distortion. I
inadvertantly detached RT4201 (Degaussing Therm(istor?)) from its leads.
The solder joints were apparently very poorly done or had become brittle
over time. Is this the cause of the issue or am I facing some other failure
such as a CRT? Is it even worth my time and or money to get this fixed?

The RCA set has had issues for a while and I think the tuner has failed on
this unit. When I turn it on after it has been unplugged for a good while
(overnight) it autoscans the channels and returns to channel 3. This is all
well and good. However, as soon as I attempt to change the channel, the set
immediately goes to channel 91 and I cannot change it to any other channel.
The OSD still works and it will act as though it is scanning for channels
when I select autoprogram but 91 is the only channel available. The quick
and easy solution is to get used to channel 3. Is this most likely a tuner
problem?

Any help would be appreciated.

Thanks,

Roy
 
Please read www.repairfaq.org then post the required information so someone
might be able to point you in the right direction.

You left out real important information like CHASSIS number, model number
means very little without wasting out time looking up cross reference
information when you have it right in front of you on the chassis on the
rear label.

There was also no real troubleshooting information, voltages, waveforms,
signal tracing or substitution, system control logic diagnosis, etc.

I am just guessing both are a ctc177 derivitive chassis, in which case the
repairfaq should answer all your questions.

David

yeahright <yrerarhrrrirgrhrtr@hrortrmrarirlr.com> wrote in message
news:ZNzub.34590$hB5.3323@nwrdny02.gnilink.net...
Hi. I have the two sets listed above and both have fairly strange issues.
(Strange to me anyway...)

The Sears set died a couple of days ago. The screen is predominantly
white
with tinges of color in the background. When I hit the front panel
controls
I can see them responding on the OSD. There is no audio distortion. I
inadvertantly detached RT4201 (Degaussing Therm(istor?)) from its leads.
The solder joints were apparently very poorly done or had become brittle
over time. Is this the cause of the issue or am I facing some other
failure
such as a CRT? Is it even worth my time and or money to get this fixed?

The RCA set has had issues for a while and I think the tuner has failed on
this unit. When I turn it on after it has been unplugged for a good while
(overnight) it autoscans the channels and returns to channel 3. This is
all
well and good. However, as soon as I attempt to change the channel, the
set
immediately goes to channel 91 and I cannot change it to any other
channel.
The OSD still works and it will act as though it is scanning for channels
when I select autoprogram but 91 is the only channel available. The quick
and easy solution is to get used to channel 3. Is this most likely a
tuner
problem?

Any help would be appreciated.

Thanks,

Roy
Click to expand...
 
Subject: Re: Sears 27443238190 and GE 26GT620F01 TV Problems
From: "David" dkuhajda@locl.net.spam
Date: 11/18/03 10:33 PM Eastern

I am just guessing both are a ctc177 derivitive chassis, in which case the
repairfaq should answer all your questions.
Click to expand...
My guess is that the GE is an older model from the 145\9 era. He says that it
autoprograms and comes up on 3 when turned on from being unplugged without
being propted to do so. I'd also guess that the tuner is okay, but he has an
AFT problem with affects the autoprogram. I wonder if the rest of the channels
work on direct enter on the remote.......

John
 
"John Del" <ohger1s@aol.com> wrote in message
news:20031119081505.19197.00000501@mb-m18.aol.com...

My guess is that the GE is an older model from the 145\9 era. He says
that it
autoprograms and comes up on 3 when turned on from being unplugged without
being propted to do so. I'd also guess that the tuner is okay, but he has
an
AFT problem with affects the autoprogram. I wonder if the rest of the
channels
work on direct enter on the remote.......

John
Click to expand...

The GE is chassis CTC149A. After autoprogramming the unit comes up to
channel 3 and then when any channel button is pushed, whether on the unit
itself or on the remote, it goes directly to channel 91 and will not change
thereafter.

The Sears unit is chassis CTC166A and everything appears to work on it
except for the picture being predominantly white with scan lines. I can
change channels and audio is perfectly fine. I can even make out OSD
information in the proper position. It is just overpowered by whiteness and
very out of focus.

I am sorry that my troubleshooting is not very thorough but I am not a TV
tech and I have no way of checking waveforms or diagnosing system control
logic. I imagine that if I had those resources at hand and knew what to
look for and where to look for it I could have probably troubleshot the
problem on my own.

Please note that I am not asking for specific answers here. I am just going
to go ahead and ditch the units anyway. There is a nice 46" HDTV in my very
new future. However, I would hate to throw these units away if I could
reasonably expect to repair them for about 100 each and then give them to a
local charity. I just wondered whether anyone had an expert opinion as to
the repair worthiness of these units. As it stands I will probably take
them to my local TV repair center and have them give me some repair
estimates.

Thanks for the replies.

Roy
 
ctc149 chassis, well known for tuner failures as well as the video
discrimintor and aft coils going out of tolerance. Possibly under a $100
repair if the service you use has access to lower cost rebuilt tuners if the
tuner is actually bad.

The ctc166 has probably one of three failures, easy to fix for any
experienced tech, a shorted luminance transistor or a failing 200v video
output scan derived power supply capacitor going bad. Rarely the picture
tube will short causing this symptom in that set or a failure in the
focus/g2 divider assembly.

David

yeahright <yrerarhrrrirgrhrtr@hrortrmrarirlr.com> wrote in message
news:4WSub.278$vz.123@nwrdny01.gnilink.net...
"John Del" <ohger1s@aol.com> wrote in message
news:20031119081505.19197.00000501@mb-m18.aol.com...

My guess is that the GE is an older model from the 145\9 era. He says
that it
autoprograms and comes up on 3 when turned on from being unplugged
without
being propted to do so. I'd also guess that the tuner is okay, but he
has
an
AFT problem with affects the autoprogram. I wonder if the rest of the
channels
work on direct enter on the remote.......

John


The GE is chassis CTC149A. After autoprogramming the unit comes up to
channel 3 and then when any channel button is pushed, whether on the unit
itself or on the remote, it goes directly to channel 91 and will not
change
thereafter.

The Sears unit is chassis CTC166A and everything appears to work on it
except for the picture being predominantly white with scan lines. I can
change channels and audio is perfectly fine. I can even make out OSD
information in the proper position. It is just overpowered by whiteness
and
very out of focus.

I am sorry that my troubleshooting is not very thorough but I am not a TV
tech and I have no way of checking waveforms or diagnosing system control
logic. I imagine that if I had those resources at hand and knew what to
look for and where to look for it I could have probably troubleshot the
problem on my own.

Please note that I am not asking for specific answers here. I am just
going
to go ahead and ditch the units anyway. There is a nice 46" HDTV in my
very
new future. However, I would hate to throw these units away if I could
reasonably expect to repair them for about 100 each and then give them to
a
local charity. I just wondered whether anyone had an expert opinion as to
the repair worthiness of these units. As it stands I will probably take
them to my local TV repair center and have them give me some repair
estimates.

Thanks for the replies.

Roy
Click to expand...
 
Subject: Re: Sears 27443238190 and GE 26GT620F01 TV Problems
From: "yeahright" yrerarhrrrirgrhrtr@hrortrmrarirlr.com
Date: 11/19/03 6:21 PM Eastern Standard Time


The GE is chassis CTC149A. After autoprogramming the unit comes up to
channel 3 and then when any channel button is pushed, whether on the unit
itself or on the remote, it goes directly to channel 91 and will not change
thereafter.
Click to expand...
That doesn't make sense. You mean if you enter "0"-"8" on the remote control,
it goes to 91??? If you mean that pushing ch up or down on the remote or TV
causes it to go to 91, that is what normally happens when the autoprogram
function finds no active channels (like when the AFT circuit is inop)
If the TV does indeed go to 91 when the actual number buttons are pushed, then
it sounds like the uPc is bad, but it's unlikely.

The Sears unit is chassis CTC166A and everything appears to work on it
except for the picture being predominantly white with scan lines.
Click to expand...
While it's possible the CRT is bad, most likely the problem is on the main
board. Excessive G2 voltage, inadequate kine source voltage, or a drive
problem can cause this symptom.

if I could
reasonably expect to repair them for about 100 each and then give them to a
local charity. I just wondered whether anyone had an expert opinion as to
the repair worthiness of these units.
Click to expand...
RCAs of this era (both are RCAs as David said) are extremely reliable and long
lived. If the CRTs are good, they will last upwards of 10 more years (better
odds than most new TVs). Have them checked. I'm sure you can get both repaired
for under $100 each carry in.

John Del
Wolcott, CT

"I'm just trying to get into heaven, I'm not running for Jesus!"
Homer Simpson

(remove S for email reply)
 
"John Del" <ohger1s@aol.com> wrote in message
news:20031119213844.12191.00000482@mb-m25.aol.com...
Subject: Re: Sears 27443238190 and GE 26GT620F01 TV Problems
From: "yeahright" yrerarhrrrirgrhrtr@hrortrmrarirlr.com
Date: 11/19/03 6:21 PM Eastern Standard Time


The GE is chassis CTC149A. After autoprogramming the unit comes up to
channel 3 and then when any channel button is pushed, whether on the unit
itself or on the remote, it goes directly to channel 91 and will not
change
thereafter.

That doesn't make sense. You mean if you enter "0"-"8" on the remote
control,
it goes to 91??? If you mean that pushing ch up or down on the remote or
TV
causes it to go to 91, that is what normally happens when the autoprogram
function finds no active channels (like when the AFT circuit is inop)
If the TV does indeed go to 91 when the actual number buttons are pushed,
then
it sounds like the uPc is bad, but it's unlikely.
Click to expand...
Doh! You, sir, are correct. I can reliably change channels by selecting
them using the '0' - '9' buttons. I have noticed that when the cable is
connected to the television I have poor tuning on several channels. When I
use the tuner on my '92 era VCR I get every channel. My assumption here is
that this is not a major issue since the tuning circuits are apparently bad
anyway.

Once again....thanks for the answers. I appreciate the patience you guys
have exhibited. Based on the advice I have received from both of you I am
going to take them both in for estimates.

Roy
 
You must log in or register to reply here.

Welcome to EDABoard.com

Sponsor

Back
Top