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Help with my TV!

I have a Tv given to me from my parents when they got a big screen. It
is an RCA I think. It is a "CabinentTV" for lack of a better term.

It is my main TV in the living room. Even since my parents had it, when
watching "over air" channels, especially 2 and 4 all of a sudden the
picture goes out or gets week and there is a terible "shrieking". I can
jiggle the coax in the back and make it go away but it does it again. A
year or two ago I took the back off and my guess is it is something in
the coax connection on the tv itself. How would I go about diagnosing
and repairing this?
 
S

Sam Goldwasser

Jan 1, 1970
0
I have a Tv given to me from my parents when they got a big screen. It
is an RCA I think. It is a "CabinentTV" for lack of a better term.

It is my main TV in the living room. Even since my parents had it, when
watching "over air" channels, especially 2 and 4 all of a sudden the
picture goes out or gets week and there is a terible "shrieking". I can
jiggle the coax in the back and make it go away but it does it again. A
year or two ago I took the back off and my guess is it is something in
the coax connection on the tv itself. How would I go about diagnosing
and repairing this?

Bad solder connections. What is the exact model and/or chassis number
on back?

--- sam | Sci.Electronics.Repair FAQ Mirror: http://repairfaq.ece.drexel.edu/
Repair | Main Table of Contents: http://repairfaq.ece.drexel.edu/REPAIR/
+Lasers | Sam's Laser FAQ: http://repairfaq.ece.drexel.edu/sam/lasersam.htm
| Mirror Sites: http://repairfaq.ece.drexel.edu/REPAIR/F_mirror.html

Note: These links are hopefully temporary until we can sort out the excessive
traffic on Repairfaq.org.

Important: Anything sent to the email address in the message header is ignored.
To contact me, please use the Feedback Form in the FAQs.
 
S

sofie

Jan 1, 1970
0
stryped:
Do not continue to operate the television with this problem..... get it to
a repair shop and have it fixed right away. If you wait and try to nurse
this along it will get worse to the point that the resulting repair will be
much more expensive.
Right now, based on the limited information that you posted I would guess
that this is the "common" CTC 175, 185, 187 etc...chassis problem with
on-board tuner ground solder connections.
This is not a repair for the novice, take it to a shop for at the very least
a repair cost estimate so you can make an intelligent repair decision with
facts instead of internet guesses. More than likely at this point the
repair will be fairly economical unless you wait too long or try to perform
a buggered up home repair attempt.
While you don't have to be a rocket scientist to perform this repair, it
does require the proper knowledge, experience, tools, procedure, etc.
 
This TV has been doinghtis for years and was given to me. I would not
mind taking it to a shop but it is very heavy and my wife is expecting
a baby any day now.

Is there a way I can "attempt" to do this at home?

What exactly is the problem? I will have to get the numbers tomorrow.
For some reason it only does it on over the air channels that are not
really strong. Strong signal channels and satelite do not cause the
problem.
 
J

James Sweet

Jan 1, 1970
0
This TV has been doinghtis for years and was given to me. I would not
mind taking it to a shop but it is very heavy and my wife is expecting
a baby any day now.

Is there a way I can "attempt" to do this at home?

What exactly is the problem? I will have to get the numbers tomorrow.
For some reason it only does it on over the air channels that are not
really strong. Strong signal channels and satelite do not cause the
problem.

You seem to have diagnosed it pretty well yourself, wiggling the coax fixes
it, likely if you open it up you'll be able to see cracked soldering that
your wiggling is effecting, this is a good beginner TV repair project, just
read up on the safety stuff in the FAQ first.
 
A

Art

Jan 1, 1970
0
Be advised, if it is an RCA with the imbedded (On Board Tuner) you best read
all the info at the "repairfaq" site before even attempting to do this.
Cheers. As posted, need the actual CTC number and at least the Model number
to give really qualified answers.
 
L

LASERandDVDfan

Jan 1, 1970
0
This TV has been doinghtis for years and was given to me. I would not
mind taking it to a shop but it is very heavy and my wife is expecting
a baby any day now.

Is there a way I can "attempt" to do this at home?

I wouldn't recommend repairing it yourself, especially if you have no
experience soldering and/or if the set uses an inline tuner module which was
known to develop solder joint cracks for the tuner grounds.
But, whether or not this set has an inline tuner or not depends on the chassis
number, which is followed by a CTC prefix. This important number is printed on
the lower right hand corner of the rear label for the television while the
lower left hand corner has the model number of the set printed on the same
label.

If the set, according to its CTC number, has an inline tuner module, it is
highly recommended that you call a reputable repair professional and ask if
they can perform an in-house repair.

Continued use of a Thomson set with bad solder ground connections in the inline
tuner module with chassis so equipped with it can eventually damage the system
control EEPROM, which will require a much more extensive and expensive repair
to fix provided that parts are even still available for it. - Reinhart
 
J

John Del

Jan 1, 1970
0
Subject: Re: Help with my TV!
From: [email protected]
Date: 12/8/04 1:56 PM Eastern Standard Time
Message-id: <[email protected]>

Is there a way I can "attempt" to do this at home?

If you've never soldered surface mounted devices before, it will be problematic
at best. Also be aware that if you butcher the tuner section (I've seen "pros"
ruin these boards), the TV is scrap. If that is not a problem for you, read
and follow the FAQ.
 
The typical problems I read do not seem like my problem. The picture
just "cuts out" and there is loud screetching. Flipping the channel
back and forth sometimes fixes it. Wiggleing the coax sometimes fixes
it. Seems like it only does it on the weak channels. @ and 4 the most.
Satelite or vcr is fine.
 
J

john

Jan 1, 1970
0
The numbers I got last night are:
Model # G35830WK

Chasis # CTC169JS6

Does that help?


Sure it helps now we know what you have...

Most probabaly the Tuner ,if you feel up to it
remove the Tuner pull off the shields and resolder
the ground points then reinstall.

Done many..

kip
 
How hard is it? Do the problems I have dictate this is what it is? I
have never soldered a board before. I have an electrician at work that
is good at it though.
Could I just buy a replacement tuner and pop it in?
 
J

john

Jan 1, 1970
0
Could I just buy a replacement tuner and pop it in?


Yes you can...


kip
 
john said:
Could I just buy a replacement tuner and pop it in?


Yes you can...


kip

What would you recommend? Will the new tuner eventually have the same
problem as the old? How do I determine this is my problem?
 
B

BWL

Jan 1, 1970
0
Stop using the onboard tuner and start using the VCR's tuner, since you've
already got it connected via RCA cables...won't cost a dime.
 
J

James Sweet

Jan 1, 1970
0
What would you recommend? Will the new tuner eventually have the same
problem as the old? How do I determine this is my problem?

Have somebody experienced look at it, if you've never soldered before you're
just asking to have to buy a new TV if you try to save money and fix it
yourself.
 
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