[TechAssist] Re: ORION TV MDL: TV1329A VERT PROBLEM
- From: Eric Manuel <tvman@xxxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 02 Aug 2004 18:05:47 -0230
Hi Fred I sent the schematic to your yahoo email did you get it Eric
Eric Manuel
E M Electronics
Deer Lake Nfld
Canada
J Silverman wrote:
>
> IC401 is the booster amplifier type of vertical IC. Pin 6 has 25 volts
> derived from the flyback. Pin 5 has a 2.6 volt bias with a sawtooth waveform
> on it that comes from the chroma IC. When the tv is in the service mode, the
> vertical size is adjusted by changing the amplitude of the sawtooth
> waveform. If there is no sawtooth, the chroma IC201 must be defective.
> Jerry Silverman
> Greentron Inc
> 4 Newland Ave
> Greenville SC 29609
> Fax/Phone 864 232 3889
> mail to: greentron@xxxxxxx
> ----- Original Message -----
> From: <fremur01@xxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Sunday, August 01, 2004 4:27 PM
> Subject: [TechAssist] ORION TV MDL: TV1329A VERT PROBLEM
>
> > Hello,
> >
> > I am servicing an ORION which I initially thought would
> > be a piece of cake.
> >
> > The unit was recently brought into shop with no vertical sweep.
> > I replaced IC401 (LA7840) thinking this would correct the problem
> > but to no avail. All adjoining components check okay.
> >
> > I have no service literature, am seeking case history info on this model.
> > Assistance is appreciated.
> >
> > ORION TV MDL: TV1329A VERT PROBLEM
> >
> > Thanks,
> >
> > Fred
> > MTS Electronics
> > Fayetteville, NC
> > fremur01@xxxxxxxxx
> >
> >
> > --------------------------------------------------------------------------
> ---
> > Lost Password:
> > http://www.tech-assist.org and select "Login Problems?".
> > Email Archives:
> > //www.freelists.org/archives/techassist/
>
> -----------------------------------------------------------------------------
> Lost Password:
> http://www.tech-assist.org and select "Login Problems?".
> Email Archives:
> //www.freelists.org/archives/techassist/
-----------------------------------------------------------------------------
Lost Password:
http://www.tech-assist.org and select "Login Problems?".
Email Archives:
//www.freelists.org/archives/techassist/
Other related posts:
