[TechAssist] Re: Fwd: CTC176F2 problems
- From: Kenny Barnes <kennyb@xxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Fri, 31 Oct 2003 10:57:36 -0600
Ok, I checked that out but remember I don't have any sound either.
>Ok, that sounds right, but didn't you say that your scan-derived voltages
>were low?
>
>If they are good, and you changed all that stuff, the only thing that comes
>to mind is ABL.
>Jim McVey
>McVey Alltronix
>327 Broadway
>Newburgh Ny 12550
>ph: 845 561 8383
>fx: 845 561 9017
>Consumer electronics &
>computer service.
>Factory authorized for
>over twenty brands.
>----- Original Message -----
>From: "Kenny Barnes" <kennyb@xxxxxxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>
>Sent: Saturday, October 25, 2003 10:30 AM
>Subject: [TechAssist] Re: Fwd: CTC176F2 problems
>
>
> >
> >
> > Changed flyback. High voltage 27kv, B+ 135 at HOT. In SMPS 147v. No
> > change , same problems.
> >
> >
> >
> >
> >
> >
> >
> >
> > At 07:09 PM 10/24/03 -0400, you wrote:
> > >Kenny,
> > >
> > >I don't understand how you can have 27 KV if the B+ is pulled down to
>114V
> > >from 140V.
> > >The HV should be down by the same percentage. HV should therefore be
>around
> > >21 to 22KV. recheck it.
> > >
> > >Check the SMPS by loading it with a 40W light bulb for a few seconds.I
>have
> > >never seen the smps have a feedback problem in these sets , but there's
> > >always a first...
> > >
> > >All the other weirdness may be due to the low voltage condition
>originating
> > >from the HVT.
> > >
> > >Bad HVT's are not unusual for this chassis.
> > >
> > >Jim McVey
> > >McVey Alltronix
> > >327 Broadway
> > >Newburgh Ny 12550
> > >ph: 845 561 8383
> > >fx: 845 561 9017
> > >Consumer electronics &
> > >computer service.
> > >Factory authorized for
> > >over twenty brands.
> > >----- Original Message -----
> > >From: "Kenny Barnes" <kennyb@xxxxxxxxxxxx>
> > >To: <techassist@xxxxxxxxxxxxx>
> > >Sent: Friday, October 24, 2003 3:08 PM
> > >Subject: [TechAssist] Re: Fwd: CTC176F2 problems
> > >
> > >
> > > > Jim..Changed Eprom and T chip, advised by other techs. Don't think
>IHVT
> > >is
> > > > shorted or there is a drain on secondary of the HVT. The hi-voltage
>is 27
> > > > kv and the HOT is normal. Not hot. Remember no sound, no picture,
>raster
> > > > dark. Turn up screen control and see a raster.
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > At 07:56 PM 10/23/03 -0400, you wrote:
> > > > >first of all, why did you change the T chip and eeprom for a voltage
> > > > >problem???
> > > > >
> > > > >My guess is a partially shorted IHVT or a severe drain on the
>secondary
> > >of
> > > > >the HVT, such as a bad cap or diode. Does the H-out get especially
>hot?
> > > > >
> > > > >Jim McVey
> > > > >McVey Alltronix
> > > > >327 Broadway
> > > > >Newburgh Ny 12550
> > > > >ph: 845 561 8383
> > > > >fx: 845 561 9017
> > > > >Consumer electronics &
> > > > >computer service.
> > > > >Factory authorized for
> > > > >over twenty brands.
> > > > >----- Original Message -----
> > > > >From: "Kenny Barnes" <kennyb@xxxxxxxxxxxx>
> > > > >To: <techassist@xxxxxxxxxxxxx>
> > > > >Sent: Thursday, October 23, 2003 12:05 PM
> > > > >Subject: [TechAssist] Fwd: CTC176F2 problems
> > > > >
> > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > Changed eprom, T chip 1001,still have same problems. Any help
>here??
> > >TIA
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > >Have RCA Model # F20352SF, CTC176F2. Set came in dead. Replaced
> > > > >capacitor
> > > > > > >C4105,10MFD/200v. Set came on when plugged in. Can not turn set
> > >off.
> > > > >No
> > > > > > >sound,no picture. Raster dark. Has high voltage,27kv. draws 1.5
> > > > > > >amps. When set is on B+ voltage drops down to 114 volts. Should
>be
> > >140
> > > > > > >volts. the 140 volts feeds HOT thru flyback. Consequently all
>scan
> > > > > > >derived voltages off of flyback are low. Disconnect HOT then
>voltage
> > >off
> > > > > > >secondary of SMPS is 144 volts. Any help here??TIA
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >Kenny Barnes
> > > > > > >Kenny Barnes tv
> > > > > > >928 South Marshall st.
> > > > > > >5154325250
> > > > > > >Boone, Iowa 50036
> > > > > >
> > > > > >
> > > > > >
> > > >
> > >
> >***************************************************************************
> > >*
> > > > >*
> > > > > > Classifieds! Buy or Sell!
> > > > > > http://sell.tech-assist.org
> > > > > > The Tech Address Book:
> > > > > > http://www.tech-assist.org/secure/tip/contact.htm
> > > > > > Add a Repair Tip Here, or Change/Remove your Email Address:
> > > > > > http://www.tech-assist.org/secure/tip/main.htm
> > > > > > Lost Password:
> > > > > > http://www.tech-assist.org and select "Lost your Login Info?".
> > > > > > Email Archives:
> > > > > > //www.freelists.org/archives/techassist/
> > > > >
> > > > >
> > > >
> > >
> >***************************************************************************
> > >**
> > > > >Classifieds! Buy or Sell!
> > > > >http://sell.tech-assist.org
> > > > >The Tech Address Book:
> > > > >http://www.tech-assist.org/secure/tip/contact.htm
> > > > >Add a Repair Tip Here, or Change/Remove your Email Address:
> > > > >http://www.tech-assist.org/secure/tip/main.htm
> > > > >Lost Password:
> > > > >http://www.tech-assist.org and select "Lost your Login Info?".
> > > > >Email Archives:
> > > > >//www.freelists.org/archives/techassist/
> > > >
> > > >
> > > >
> >
> >***************************************************************************
>*
> > >*
> > > > Classifieds! Buy or Sell!
> > > > http://sell.tech-assist.org
> > > > The Tech Address Book:
> > > > http://www.tech-assist.org/secure/tip/contact.htm
> > > > Add a Repair Tip Here, or Change/Remove your Email Address:
> > > > http://www.tech-assist.org/secure/tip/main.htm
> > > > Lost Password:
> > > > http://www.tech-assist.org and select "Lost your Login Info?".
> > > > Email Archives:
> > > > //www.freelists.org/archives/techassist/
> > > >
> > >
> > >
> >
> >***************************************************************************
>**
> > >Classifieds! Buy or Sell!
> > >http://sell.tech-assist.org
> > >The Tech Address Book:
> > >http://www.tech-assist.org/secure/tip/contact.htm
> > >Add a Repair Tip Here, or Change/Remove your Email Address:
> > >http://www.tech-assist.org/secure/tip/main.htm
> > >Lost Password:
> > >http://www.tech-assist.org and select "Lost your Login Info?".
> > >Email Archives:
> > >//www.freelists.org/archives/techassist/
> >
> >
> >
>****************************************************************************
>*
> > Classifieds! Buy or Sell!
> > http://sell.tech-assist.org
> > The Tech Address Book:
> > http://www.tech-assist.org/secure/tip/contact.htm
> > Add a Repair Tip Here, or Change/Remove your Email Address:
> > http://www.tech-assist.org/secure/tip/main.htm
> > Lost Password:
> > http://www.tech-assist.org and select "Lost your Login Info?".
> > Email Archives:
> > //www.freelists.org/archives/techassist/
>
>
>*****************************************************************************
>Classifieds! Buy or Sell!
>http://sell.tech-assist.org
>The Tech Address Book:
>http://www.tech-assist.org/secure/tip/contact.htm
>Add a Repair Tip Here, or Change/Remove your Email Address:
>http://www.tech-assist.org/secure/tip/main.htm
>Lost Password:
>http://www.tech-assist.org and select "Lost your Login Info?".
>Email Archives:
>//www.freelists.org/archives/techassist/
*****************************************************************************
Classifieds! Buy or Sell!
http://sell.tech-assist.org
The Tech Address Book:
http://www.tech-assist.org/secure/tip/contact.htm
Add a Repair Tip Here, or Change/Remove your Email Address:
http://www.tech-assist.org/secure/tip/main.htm
Lost Password:
http://www.tech-assist.org and select "Lost your Login Info?".
Email Archives:
//www.freelists.org/archives/techassist/
Other related posts:
