CTC 175-A Part Help Needed

[George S]

I have an RCA 20" CTC-A, no video, or sound. It has OSD so I figured it is
worth resoldering the tuner. While cleaning the coating of thick dust off
the chassis board. The degaussing thermistor fell off the leads. It is
listed as RT4201K, how do I look up a replacement one? The only markings on
it are 100-01A and A1745, and I'm not getting anywhere with the CTC part
number.

Thanks, George

 

[Jonesy]

george just sand off the coating and resolder if it not broken
"George S" <george996(NO_SPAM)@olypen.com> wrote in message
news:vu3igvrecjq77c@corp.supernews.com...

I have an RCA 20" CTC-A, no video, or sound. It has OSD so I figured it is
worth resoldering the tuner. While cleaning the coating of thick dust off
the chassis board. The degaussing thermistor fell off the leads. It is
listed as RT4201K, how do I look up a replacement one? The only markings
on
it are 100-01A and A1745, and I'm not getting anywhere with the CTC part
number.

Thanks, George

 

[Jason D.]

On Thu, 18 Dec 2003 18:16:59 -0500, "Jonesy" <JONESY82@cox.net> wrote:

george just sand off the coating and resolder if it not broken
"George S" <george996(NO_SPAM)@olypen.com> wrote in message

This is degaussing posistor. Yeah they always drop out of that wires
when older and solder joint broke from thermal cyclings.

Those dull grey discs cracks loudly if solder iron is too hot. I use
about 550F, almost barely melts the solder for this job. Use some
flux too. Helps lot for good solder joint along with buffing with fine
sandpaper prior to soldering.

If you do crack it, go to the tv shop and ask for deguassing posistor
for a 20" tv with solder leads. They may sell you one for 5 or 10 or
so. I like those that is dipped in ceramic coating, more durable.

FYI: I saw a new RCA ITC008 chassis, surprised me when TV DEGAUSSED
when I turned it off. Now that is overkill, degaussed twice! Oh,
liked the new design without painful gemstar and simplified signal
routings through ICs, and a small black box for posistor instead of
naked disc. Compare that ITC008 to horrid ATC113 on signal routings.


Cheers,

Wizard

 

[George S]

Does the ohm reading matter that much on these when cold? Mine only reads
about 6 ohms cold. I saw a universal one in the MCM catalog that was 25ohms
cold, and 125 ohms at 20 degrees C.
George



"Jonesy" <JONESY82@cox.net> wrote in message
news:0AqEb.10567$WQ3.9620@lakeread05...

george just sand off the coating and resolder if it not broken
"George S" <george996(NO_SPAM)@olypen.com> wrote in message
news:vu3igvrecjq77c@corp.supernews.com...
I have an RCA 20" CTC-A, no video, or sound. It has OSD so I figured it
is
worth resoldering the tuner. While cleaning the coating of thick dust
off
the chassis board. The degaussing thermistor fell off the leads. It is
listed as RT4201K, how do I look up a replacement one? The only markings
on
it are 100-01A and A1745, and I'm not getting anywhere with the CTC part
number.

Thanks, George