[TechAssist] Re: RCA F35676MB CTC197CD Part ID
- From: "J Silverman" <greentron@xxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sun, 6 Oct 2002 17:57:36 -0400
We are in a metal building that has only one window. Some years ago a
burgular broke in through it so I had a welding shop make up a rectangular
grid of 3/8 iron rod with about 6 inch square openings to bolt in just
inside the window. Working in a back room I could hear a nasty storm come up
and I came to the front room where the window was to see what was going on.
Just as I got to the doorway, lightning struck somewhere just outside the
window. Large blue-white sparks flew across the 6 inch openings all over
that gridwork. Scared the bejeezers out of me. The electric and magnetic
fields from lightning can do quite a bit of damage without the lightning
striking things directly. As far as direct strikes go, the local tv channel
4 was off the air for several days when lightning evaporated the four 6 inch
diameter copper buss bars grounding their transmitter tower.
Jerry Silverman
Greentron Inc
4 Newland Ave
Greenville SC 29609
864 232 3889
Fax 271 2080
mailto:greentron@xxxxxxx
----- Original Message -----
From: "Leonard Caillouet" <lcaillo@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Sunday, October 06, 2002 4:33 PM
Subject: [TechAssist] Re: RCA F35676MB CTC197CD Part ID
>
> Philip,
>
> I used to believe this until I moved to Gainesville, FL where we see many
> more lightning damaged sets than I did even in Louisiana. I have had too
> many sets that I have had to change FBT in that were part of lightning
> strikes. Typically when the FBT is damaged the set has been running
during
> the strike.
>
> Leon.
> ----- Original Message -----
> From: "Phillip R. Hull" <phil245@xxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Sunday, October 06, 2002 9:43 AM
> Subject: [TechAssist] Re: RCA F35676MB CTC197CD Part ID
>
>
> >
> > I have never a lightning directly strike a flyback yet.
> > Phillip R. Hull
> > phil245@xxxxxxxxxxxxx
> > ----- Original Message -----
> > From: "J Silverman" <greentron@xxxxxxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Friday, October 04, 2002 8:58 PM
> > Subject: [TechAssist] Re: RCA F35676MB CTC197CD Part ID
> >
> >
> > >
> > > There is a phenomen called corona discharge that can occur whenever
> there
> > is
> > > more than 300 volts in air. The discharge produces ultra violet light
> and
> > > the light gradually damages insulating materials. To minimize this a
> > filler
> > > is used to displace the air. The discharge can still take place in the
> > tiny
> > > air bubbles in the filler and the filler degrades gradually. This is
> > > probably the biggest killer of flybacks, capacitors, and ballasts.
> > > The other biggest problem is moisture working its way in, carrying
ionic
> > > contaminents to the windings and rectifiers. Also if the device is not
> > fully
> > > impregnated with filler, windings and connections can vibrate until
they
> > > break. And of course lightning can damage anything.
> > > Jerry Silverman
> > > Greentron Inc
> > > 4 Newland Ave
> > > Greenville SC 29609
> > > 864 232 3889
> > > Fax 271 2080
> > > mailto:greentron@xxxxxxx
> > > ----- Original Message -----
> > > From: "kevinstv" <kevinstv@xxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Friday, October 04, 2002 2:14 PM
> > > Subject: [TechAssist] Re: RCA F35676MB CTC197CD Part ID
> > >
> > >
> > > >
> > > > What makes flybacks fail? Many years of use--wire windings that are
> > very
> > > > close to each other and have thousands of volts going through them.
> > > > Imperfect manufacture, especially the newer ones with the diodes
> > failing.
> > > I
> > > > don't know exactly. Maybe an engineer could enlighten us!
> > > >
> > > > Kevin Wilks
> > > > Kevin's TV and Video Repair
> > > > Penticton BC Canada
> > > > kevinstv@xxxxxxx
> > > > ----- Original Message -----
> > > > From: "Wayne Vanaman" <wayne@xxxxxxxxxxxxxxxxxxxxx>
> > > > To: <techassist@xxxxxxxxxxxxx>
> > > > Sent: Friday, October 04, 2002 10:47 AM
> > > > Subject: [TechAssist] Re: RCA F35676MB CTC197CD Part ID
> > > >
> > > >
> > > > >
> > > > > OK, what makes them go bad?
> > > > >
> > > > > Wayne Vanaman
> > > > > Omega Electronics
> > > > > 6904 W Fairfield Dr
> > > > > Pensacola, Fl. 32506-3310
> > > > >
> > > > > 850-456-5995 voice
> > > > > 850-458-6369 fax
> > > > >
> > > > > Mailto:Wayne@xxxxxxxxxxxxxxxxxxxxx
> > > > > WWW.PensacolaTVRepair.Com
> > > > >
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "kevinstv" <kevinstv@xxxxxxx>
> > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > Sent: Friday, October 04, 2002 12:32 PM
> > > > > Subject: [TechAssist] Re: RCA F35676MB CTC197CD Part ID
> > > > >
> > > > >
> > > > > >
> > > > > > As far as I know nothing can destroy a flyback. Anybody have
any
> > > > > different
> > > > > > ideas?
> > > > > >
> > > > > > Kevin Wilks
> > > > > > Kevin's TV and Video Repair
> > > > > > Penticton BC Canada
> > > > > > kevinstv@xxxxxxx
> > > > > > ----- Original Message -----
> > > > > > From: "Larry E." <videotech@xxxxxxxxxxxx>
> > > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > > Sent: Friday, October 04, 2002 9:01 AM
> > > > > > Subject: [TechAssist] RCA F35676MB CTC197CD Part ID
> > > > > >
> > > > > >
> > > > > > >
> > > > > > > Hi Guys, Ordered flyback kit 237506 from Excel (overnight) for
> > this
> > > > > > > ctc197cd,contains flyback,capacitor and resistor R14704, pn
> > > 239116,
> > > > > > > the resistor is missing from the box, Jason is not in today,
and
> > > > nobody
> > > > > > > has called me back from Excel,I don`t know if the replacement
> > > resistor
> > > > > > > that comes in the kit is the same value/wattage as the
original
> in
> > > the
> > > > > > > set,the special instructions sheet that comes with the kit
says,
> > > > > > > "failure to replace these components all at the same time may
> > > destroy
> > > > > > > new flyback" can someone give me the value of this "kit"
> resistor?
> > > tia
> > > > > > > --
> > > > > > > Larry Eastman
> > > > > > > American TV & Electronics
> > > > > > > Crystal River, Fl.
> > > > > > > http://www.tvjunkyard.com
> > > > > > >
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