[TechAssist] Re: One last plea...Orion TV2501..press power, retrace, then shuts off.

  • From: "J Silverman" <greentron@xxxxxxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Fri, 22 Aug 2003 13:45:46 -0400

The main reason for using a high voltage probe is for the high input
impedance. The 10 megs input impedance of a DVOM can drop the screen voltage
in half.
Jerry Silverman
Greentron Inc
4 Newland Ave Greenville SC 29609
864 232 3889 Fax 271 2080
greentron@xxxxxxx
----- Original Message -----
From: George <grndmstrg@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, August 19, 2003 8:38 PM
Subject: [TechAssist] Re: One last plea...Orion TV2501..press power,
retrace, then shuts off.


> Barry,
>
> My Digital meter has no problem reading it, but I suppose there is a lot
of
> cheapo DMM's being sold.
> It's nice to have a good analog multimeter when needed
> like my Simpson 260.
>
> George
> Afana Electronics
> Moreno Valley, CA
>
> ----- Original Message -----
> From: "Barry Thompson" <barrystv@xxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Tuesday, August 19, 2003 4:56 PM
> Subject: [TechAssist] Re: One last plea...Orion TV2501..press power,
> retrace, then shuts off.
>
>
> > Most digital meters won't read it. to much RF.
> > barrystv@xxxxxxx
> > Barrys TV
> > 613 224 3406
> > Ottawa.Canada.
> > ----- Original Message -----
> > From: "George" <grndmstrg@xxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Tuesday, August 19, 2003 7:34 PM
> > Subject: [TechAssist] Re: One last plea...Orion TV2501..press power,
> > retrace, then shuts off.
> >
> >
> > > Barry,
> > > Out of curiosity why would you use a HV probe to measure the screen
(G2)
> > > voltage?
> > >
> > > George
> > > Afana Electronics
> > > Moreno Valley, CA
> > >
> > > ----- Original Message -----
> > > From: "Barry Thompson" <barrystv@xxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Tuesday, August 19, 2003 3:46 PM
> > > Subject: [TechAssist] Re: One last plea...Orion TV2501..press power,
> > > retrace, then shuts off.
> > >
> > >
> > > > Did you check the crt for shorts? Did you use a HV probe to check
the
> > > > screen?
> > > > barrystv@xxxxxxx
> > > > Barrys TV
> > > > 613 224 3406
> > > > Ottawa.Canada.
> > > > ----- Original Message -----
> > > > From: "Intrepid Video Support" <support@xxxxxxxxxxxxxxxxxx>
> > > > To: "Techassist" <techassist@xxxxxxxxxxxxx>
> > > > Sent: Tuesday, August 19, 2003 5:08 PM
> > > > Subject: [TechAssist] One last plea...Orion TV2501..press power,
> > retrace,
> > > > then shuts off.
> > > >
> > > >
> > > > > This unit came in with no picture. I checked the G2 on the CRT
> > > board....0.
> > > > When I pulled the G2 lead to
> > > > > check the voltage, it wasn't present, when I replaced the lead,
the
> > set
> > > > started to work and has worked
> > > > > ever since.
> > > > > Only problem now, is when I press power, there is retrace lines
> > > > momentarily, less than a second, before
> > > > > the set shuts down.
> > > > > The only thing I can catch, is the RGB cathodes drop to 20vdc,
then
> to
> > > > 40vdc which is where they stay for
> > > > > standby.
> > > > > G2 acts no differently..until the power is gone. I've checked
> > components
> > > > in the ABL circuit thinking the
> > > > > problem may be there and they check OK.
> > > > > I'm ready to send this set home the way it is, unless someone
gives
> me
> > > one
> > > > last hope, here....thank you.
> > > > >
> > > > >
> > > > > Jeff Dougherty
> > > > > Intrepid Video TV/VCR
> > > > > 263 S Front St
> > > > > Steelton PA 17113
> > > > > fax...717-564-4952
> > > > > www.intrepid-video.com www.tech-repair.net
> > > > >
> > > > >
> > > >
> > >
> >
>
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