[TechAssist] Re: Orion-TVCR mod#tvcr1321,blue screen

  • From: "J Silverman" <greentron@xxxxxxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Fri, 17 May 2002 16:00:54 -0400

There is only 5 points. Try them all. We were able to inject and get a
signal on the one we gave up on. Even with a signal the AGC voltage stayed
high. Replacing the chip did not fix it. We even ohmed the communication
lines from the tuner and IF back to the tv micro. I did have those open on
one unit where another shop changed the tuner and damaged the fine traces.
Jerry Silverman
Greentron Inc
4 Newland Ave
Greenville SC 29609
864 232 3889
Fax 271 2080
mailto:greentron@xxxxxxx
----- Original Message -----
From: "Don Hartigan" <hartstv@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, May 17, 2002 8:28 AM
Subject: [TechAssist] Re: Orion-TVCR mod#tvcr1321,blue screen


>
> Al,have no print,where is the injection point for SAW? also I lose the IF
> sig in a maze of traces on this board.Tryed getting a schematic from Orion
> but they say NLA.tks for your reply....Don.......
> HARTS-TVCR''ASC''
> 9-Robert St.,Oromocto,NewBrunswick,CAN
> Tel#506-357-9785Fax#506-357-6010
> ----- Original Message -----
> From: "al m" <ampm@xxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Friday, May 17, 2002 8:56 AM
> Subject: [TechAssist] Re: Orion-TVCR mod#tvcr1321,blue screen
>
>
> >
> > Don did you try putting in an IF signal after the tuner, and after the
Saw
> > filter.
> > al marquardt
> > ampm@xxxxxxx
> >
> >
> > ----- Original Message -----
> > From: "Don Hartigan" <hartstv@xxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Friday, May 17, 2002 6:31 AM
> > Subject: [TechAssist] Orion-TVCR mod#tvcr1321,blue screen
> >
> >
> > > This unit has blue screen when rf connected to cable i/p.VCR has good
> > picture/sound on playback.A/V inputs ok.I subbed out the tuner,no
> > help,&checked voltages;BT=30vdc,BP=5vdc,BM=9vdc,AGC line is sitting at
> > 7.5vdc.Unit will sometimes show a very snowy,no sound picture,which
cannot
> > be changed by trying to channel up/down,#'s on screen will change.Unit
> will
> > auto-program.This uses a LA7583=IC6001 in the tuner cct,as per data
sheet
> > it's the VIF/SIF control ic,voltages to it are ok.Have checked my parts
> > sources & they don't list it.Does anyone have one or know where I can
get
> > it.It ''MAY'' be my problem.All i/p's welcome on this little
> > 13''..TIA..Don.......
> > > HARTS-TVCR''ASC''
> > > 9-Robert St.,Oromocto,NewBrunswick,CAN
> > > Tel#506-357-9785Fax#506-357-6010
> > >
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