[TechAssist] Re: RCA model # F32683SB, CTC197CE2,dead, relay clicks.

  • From: "Barry Thompson" <barrystv@xxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Fri, 22 Aug 2003 08:22:51 -0400

Hi: Gary: Is this good for monitors and hdtv? How much did it cost on
canadian funds? Barry
barrystv@xxxxxxx
Barrys TV
613 224 3406
Ottawa
Ontario
North America
----- Original Message ----- 
From: "Gary McCartney" <gary@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, August 21, 2003 11:19 PM
Subject: [TechAssist] Re: RCA model # F32683SB, CTC197CE2,dead, relay
clicks.


> Sounds like a good unit.
>
> I have the HR Diemen HOT output simulator which is along the same line.
> With this unit, you connect the second anode lead of the flyback
> directly to the unit, then clip onto the flyback B+ and collector
> terminals, plus all the grounds. Then the unit will display a code
> telling you what condition the flyback is in and if it is in good
> condition, it will display the output in kV on a digital display. If the
> flyback is bad, the codes will tell you if it is a shorted primary or
> secondary, or whatever. I have saved myself from buying flybacks and
> also saved from blowing up HOT's too. I wouldn't want to be without it.
> The manufacturer claims it can check flybacks accurately in circuit but
> I find I usually have to remove the flyback to avoid false readings.
> There is also a test point to connect your scope so you can see the
> actual HOT collector waveform the flyback is producing.
>
>
> http://www.hrdiemen.es/indexeng.shtml
>
>
>
>
>
> Gary McCartney
>
> McCartney Electronics
> Guelph Ontario Canada
> Est. 1984
> email: gary (at) number63.ca
>
>
>
>
>
>
>
>
> J Silverman wrote:
> >
> > An instrument made for troubleshooting tv deflection problems without
> > blowing up things. Diehl is long out of business but they had lots of
> > inventory and I see them frequently offered for sale by people that have
a
> > bunch of them and by individuals. Takes the place of the HOT and has a
test
> > mode with trouble lights and a run mode. The tv must have B+ and I dont
> > think it will work on the 12 and 24 volt B+ units.
> > Every day I will see posts on the list asking questions about deflection
> > problems that they could have handled by themselves if they had one of
> > these. There were a variety of models. I have the MKV. It cost me $125.
I
> > bought it when I had a tech that ordered a FBT every time something came
in
> > with a shorted HOT. After we got it, it showed that only one out of 10
had a
> > defective FBT, and was a great help in troubleshooting the source of the
> > problem.
> > Jerry Silverman
> > Greentron Inc
> > 4 Newland Ave
> > Greenville SC 29609
> > 864 232 3889
> > Fax 271 2080
> > mailto:greentron@xxxxxxx
> > ----- Original Message -----
> > From: "Kevin" <kevintv@xxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Monday, January 27, 2003 8:48 PM
> > Subject: [TechAssist] Re: RCA model # F32683SB, CTC197CE2,dead, relay
> > clicks.
> >
> > >
> > > What is a Diehl MKV Scanner?
> > >
> > > Kevin Wilks
> > > Kevin's TV & Video Repair
> > > Penticton BC Canada
> > > kevintv@xxxxxxx
> > >
> > >
> > > -----Original Message-----
> > > From: techassist-bounce@xxxxxxxxxxxxx
> > > [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of J Silverman
> > > Sent: Monday, January 27, 2003 5:35 PM
> > > To: techassist@xxxxxxxxxxxxx
> > > Subject: [TechAssist] Re: RCA model # F32683SB, CTC197CE2,dead, relay
> > > clicks.
> > >
> > >
> > > My old Diehl MKV Scanner actually runs the FBT from its own
bulletproof
> > > HOT
> > > if there is B+ and lights tell me if there are problems. Then I can
> > > disconnect the loads one at a time and if there is still a problem it
> > > has to
> > > be the FBT. After the thing is fixed, the Diehl will run the tv
> > > indefinitely
> > > to see if there are any intermittant problems. I still see those
things
> > > being offered for sale.
> > > Jerry Silverman
> > > Greentron Inc
> > > 4 Newland Ave
> > > Greenville SC 29609
> > > 864 232 3889
> > > Fax 271 2080
> > > mailto:greentron@xxxxxxx
> > > ----- Original Message -----
> > > From: "Wayne Vanaman" <Wayne@xxxxxxxxxxxxxxxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Monday, January 27, 2003 6:05 PM
> > > Subject: [TechAssist] Re: RCA model # F32683SB, CTC197CE2,dead, relay
> > > clicks.
> > >
> > >
> > > >
> > > > Excellent point Leonard.  An active test is better than a passive
> > > test.
> > > In
> > > > the CTC19x series I have seen many IHVTs that just don't break down
> > > untill
> > > > you pass a couple hundred volt peaks.  If you have an external power
> > > supply,
> > > > say 30v + and a drive signal you are good to go.  The Sencore built
it
> > > stuff
> > > > only goes up to about 15vdc and that is not enough to break down the
> > > > transformer.
> > > >
> > > > I have a digital storage o'scope so it is easier for me to see the
> > > ringing
> > > > on an IHVT however here is how to do it with an analog scope.
> > > >
> > > > 1.  Set the scope on "Normal Trigger"--not automatic, which most
techs
> > > use.
> > > > 2.  Set the scope on about 20 uS.
> > > > 3.  Set the scope to trigger on about 200v. (if you are on the
> > > collector
> > > of
> > > > the output transistor)
> > > >     a.  If you can not scope the HOT collector directly use a
> > > secondary,
> > > > such as the 200v supply
> > > >     b.  set the scope to trigger on about 15-20% of the peak pulse
you
> > > would
> > > > expect there.
> > > > 4.  Turn the intensity of the trace up.
> > > > 5.  Hit the power button while watching the scope.
> > > >
> > > > What you will see if the IHVT is bad is a series of pulses decaying
in
> > > > amplitude.
> > > >
> > > > Wayne Vanaman
> > > > Omega Electronics
> > > > 6904 W Fairfield Dr
> > > > Pensacola, Fl.  32506-3310
> > > >
> > > > Wayne@xxxxxxxxxxxxxxxxxxxxx
> > > > WWW.PensacolaTVRepair.Com
> > > >
> > > > 850-456-5995 voice
> > > > 850-458-6369 fax
> > > >
> > > >
> > > > ----- Original Message -----
> > > > From: "Leonard G. Caillouet" <lcaillo@xxxxxxxxxxxx>
> > > > To: <techassist@xxxxxxxxxxxxx>
> > > > Sent: Monday, January 27, 2003 4:47 PM
> > > > Subject: [TechAssist] Re: RCA model # F32683SB, CTC197CE2,dead,
relay
> > > > clicks.
> > > >
> > > >
> > > > >
> > > > > Some flybacks will ring good with these tests and still be bad.
The
> > > best
> > > > > test that I have found is the Sencore drive test on the TVA92
which
> > > is
> > > > just
> > > > > a 25v horizontal key pulse applied to the primary. You measure the
> > > dc
> > > > output
> > > > > on the anode lead and compare to the chart.  It is very effective
at
> > > > > identifying HV rectifier problems that ringing will not.
> > > > >
> > > > > Leonard G. Caillouet
> > > > > Service Manager
> > > > > Electronics World
> > > > > Gainesville, FL
> > > > > 352-332-5608
> > > > > 352-332-5668 (fax)
> > > > >
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "Wayne Vanaman" <Wayne@xxxxxxxxxxxxxxxxxxxxx>
> > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > Sent: Monday, January 27, 2003 4:32 PM
> > > > > Subject: [TechAssist] Re: RCA model # F32683SB, CTC197CE2,dead,
> > > relay
> > > > > clicks.
> > > > >
> > > > >
> > > > > >
> > > > > > The ringing test is only that, a test.  The information is
neither
> > > good
> > > > > nor
> > > > > > bad by itself.  A good/bad test means nothing.  The Sencore
VG91,
> > > > HA2500,
> > > > > > and LC102 will all tell you that the IHVT is good because they
> > > have
> > > > > > arbitrarily selected 12 or something as the good/bad cut off.
You
> > > need
> > > > to
> > > > > > know what the "new" or "good" ihvts measure.
> > > > > >
> > > > > > The best test for these is to see them ring would you hit the
> > > power
> > > > > button.
> > > > > >
> > > > > > Here are some readings I recorded:
> > > > > >
> > > > > >
> > > > > >
> > > > > > IHVT 237506 2 good units measured.
> > > > > > Pins 2-3 ring 57, 54 on the z-meter. Measures 2.77, 2.85 mH
> > > > > > Pins 1-2 ring 29, 25 and measures 1.49, 1.43 uH
> > > > > > Pins 1-3 ring 57, 54 and measures 2.52, 2.64 mH
> > > > > > Pins 6-10 ring 48, 41 and measures 530, 540 uH
> > > > > > On the TVA
> > > > > > Pins 1-3 ring 30, 31
> > > > > > Pins 1-2 ring 14, 16
> > > > > > Pins 2-3 ring 30, 32
> > > > > > Pins 6-10 ring 36, 36
> > > > > >
> > > > > > Pin 5-anode leaks 2 mA
> > > > > >
> > > > > > BAD UNITs z-meter
> > > > > > pins 2-3 ring 19, 40
> > > > > > pins 1-2 ring 2, 17
> > > > > > pins 1-3 ring 18, 39
> > > > > > pins 6-10 ring 7, 30
> > > > > > On the TVA
> > > > > > Pins 2-3 ring 15, 27
> > > > > > Pins 1-2 ring 0, 11
> > > > > > Pins 1-3 ring 14, 26
> > > > > > Pins 6-10 ring 0, 26
> > > > > >
> > > > > >
> > > > > > Notice the relatively high (good) ring count on the defective
> > > units.
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > Wayne Vanaman
> > > > > > Omega Electronics
> > > > > > 6904 W Fairfield Dr
> > > > > > Pensacola, Fl.  32506-3310
> > > > > >
> > > > > > Wayne@xxxxxxxxxxxxxxxxxxxxx
> > > > > > WWW.PensacolaTVRepair.Com
> > > > > >
> > > > > > 850-456-5995 voice
> > > > > > 850-458-6369 fax
> > > > > >
> > > > > >
> > > > > > ----- Original Message -----
> > > > > > From: "Kevin" <kevintv@xxxxxxx>
> > > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > > Sent: Monday, January 27, 2003 3:05 PM
> > > > > > Subject: [TechAssist] Re: RCA model # F32683SB, CTC197CE2,dead,
> > > relay
> > > > > > clicks.
> > > > > >
> > > > > >
> > > > > > >
> > > > > > > Which pins do I use to ring the flyback?  I have the schematic
> > > but I
> > > > > > > can't find pin 14 on the flyback.  Pins 2 and 3, and 1 and 3
> > > rang
> > > > good.
> > > > > > > Pins 1 and 2 rang bad.
> > > > > > >
> > > > > > > Kevin Wilks
> > > > > > > Kevin's TV & Video Repair
> > > > > > > Penticton BC Canada
> > > > > > > kevintv@xxxxxxx
> > > > > > >
> > > > > > > -----Original Message-----
> > > > > > > From: techassist-bounce@xxxxxxxxxxxxx
> > > > > > > [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Jim
Myers
> > > > > > > Sent: Monday, January 27, 2003 4:22 AM
> > > > > > > To: techassist@xxxxxxxxxxxxx
> > > > > > > Subject: [TechAssist] Re: RCA model # F32683SB,
CTC197CE2,dead,
> > > relay
> > > > > > > clicks.
> > > > > > >
> > > > > > >
> > > > > > > Bad flyback, pull it and ring test it to be sure.
> > > > > > > ----- Original Message -----
> > > > > > > From: "Kevin" <kevintv@xxxxxxx>
> > > > > > > To: "TECH-ASSIST" <techassist@xxxxxxxxxxxxx>
> > > > > > > Sent: Monday, January 27, 2003 4:08 AM
> > > > > > > Subject: [TechAssist] RCA model # F32683SB, CTC197CE2,dead,
> > > relay
> > > > > > > clicks.
> > > > > > >
> > > > > > >
> > > > > > > Hi fellow techs,
> > > > > > >
> > > > > > > Working on this 32" RCA.  When the pwr switch is pressed the
> > > just
> > > > > > > clicks-no HV or sound.  Only brought in chassis-nojig either.
> > > Any
> > > > ideas
> > > > > > > what could be wrong?  I have never seen this chassis before so
> > > any
> > > > help
> > > > > > > would be appreciated.  TIA
> > > > > > >
> > > > > > > Kevin Wilks
> > > > > > > Kevin's TV & Video Repair
> > > > > > > Penticton BC Canada
> > > > > > > kevintv@xxxxxxx
> > > > > > >
> > > > > > >
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