[TechAssist] Re: MITSUBISHI PROJ TV MDL: VS-5051 / NO VIDEO
- From: "teltek3" <teltek3@xxxxxxxxxxxx>
- To: <fremur01@xxxxxxxxx>
- Date: Fri, 3 Jan 2003 18:37:32 -0500
Just checked on my database...don't have that Manual. Post the question on
TechAssist, and get a value.
-Ed-
Tel-Tek Electronics
Ontario-Canada
teltek2@xxxxxxxxxxxx
----- Original Message -----
From: <fremur01@xxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, January 03, 2003 4:57 PM
Subject: [TechAssist] Re: MITSUBISHI PROJ TV MDL: VS-5051 / NO VIDEO
>
> Thank's very much for the input Ed. I found the
> following voltages: Approx 35vdc @ pin 3 and pin 6,
> 2vdc @ pin 4. All looks good there.
>
> However upon inspection I did find a burnt resistor
> (r2200) 1/4 w adjacent to Q2023. It's tucked away
> under the tuner and not too far from the PIP module.
> Do you show a value for it in your service guide? Any
> input is appreciated.
>
> Thanks!
>
>
> Check For 2vdc At Pin 4 Ic401,If Missing Check For
> 34vdc At Pin 6 And 3
> Lso Check For .8vpp Pulse At Pin 5, If All Are Present
> Check 14v R
>
> Cut and Pasted from Winstips.
>
> -Ed-
> Tel-Tek Electronics
> Ontario-Canada
>
> teltek2@xxxxxxxxxxxx
> ----- Original Message -----
> From: "teltek2" <teltek2@xxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Saturday, December 28, 2002 11:10 AM
> Subject: [TechAssist] Re: MITSUBISHI PROJ TV MDL:
> VS-5051 / NO VIDEO
>
>
> > Are you sure the IC is suppose to be LA7845?
> >
> > -Ed-
> > Tel-Tek Electronics
> > Ontario-Canada
> >
> > teltek2@xxxxxxxxxxxx
> > ----- Original Message -----
> > From: <fremur01@xxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Saturday, December 28, 2002 10:49 AM
> > Subject: [TechAssist] Re: MITSUBISHI PROJ TV MDL:
> VS-5051 / NO VIDEO
> >
> >
> > >
> > > Hello,
> > >
> > > This one is still being a problem.
> > >
> > > I replaced IC401 (LA7845) along with adjoining
> > > caps in the circuit and it still has no video. Crt
> > > filaments and HV are fine. I tried inspecting the
> yoke
> > > connectors as well.
> > >
> > > Anyway, does anyone with service literature know
> the
> > > correct Vcc voltages on the IC I should look for
> in
> > > the vertical circuit? This is an awkward pc board
> > > so measurements should be fun.
> > >
> > > Thanks
> > >
> > > Item specs: MITSUBISHI PROJ TV MDL: VS-5051
> > >
> > > Fred
> > > MTS Electronics
> > > Fayetteville, NC
> > > fremur01@xxxxxxxxx
> > >
> > > -----Original Message-----
> > > From: techassist-bounce@xxxxxxxxxxxxx
> > > [mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf
> Of
> > > Gooseman
> > > Sent: Wednesday, December 11, 2002 9:20 PM
> > > To: techassist@xxxxxxxxxxxxx
> > > Subject: [TechAssist] Re: MITSUBISHI PROJ TV MDL:
> > > VS-5051 / NO VIDEO
> > >
> > >
> > >
> > > Look at ic401 for loose connection or the
> yokes.you
> > > can wiggle the youe
> > > plugs and usually find the 1 with the loose
> > > connection.
> > > Beyond that you may have a bad vertical IC.
> > > Tvman99@xxxxxxx
> > >
> > >
> > > -----Original Message-----
> > > From: techassist-bounce@xxxxxxxxxxxxx
> > > [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf
> Of
> > > fremur01@xxxxxxxxx
> > > Sent: Wednesday, December 11, 2002 4:36 PM
> > > To: techassist@xxxxxxxxxxxxx
> > > Subject: [TechAssist] MITSUBISHI PROJ TV MDL:
> VS-5051
> > > / NO VIDEO
> > >
> > >
> > > Hello,
> > >
> > > Went on a call today for the following: Set has
> good
> > > audio but no picture. I noticed all CRT filaments
> > > light up along with H/V buildup. One Tech had
> > > mentioned that some of these sets can have
> problems
> > > with the PIP module.
> > >
> > > Anyway, I was limited as to what could be done on
> > > site, and will take set back to shop later this
> week.
> > >
> > > I dont have service literature for this one.
> Nothing
> > > looked burnt on the PIP module. Anyone know of
> case
> > > history info for this model?
> > >
> > > Thanks
> > >
> > > Fred
> > > MTS Electronics
> > > Fayetteville, NC
> > > fremur01@xxxxxxxxx
> > >
> > >
> > > Item specs: MITSUBISHI PROJ TV MDL: VS-5051
>
>
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