[TechAssist] Re: Mitsubishi VS6015R
- From: "Leonard G. Caillouet" <lcaillo@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 1 Mar 2004 15:12:56 -0500
Is the mirror out of position?
This is a V10 chassis. Expect a couple of dozen bad caps and check the ones
at the back of the board between the FBT and IC502 in particular if you have
a shutdown problem. I have one on the bench right now if you need some
comparison measurements, but we are going through all the caps before doing
any troubleshooting. Too may wierd problems on these are due to electrolyte
or bad caps.
Leonard G. Caillouet
Electronics World
Gainesville, FL
352-332-5608
352-332-5668 (fax)
----- Original Message -----
From: "Paul" <dntwntv@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, March 01, 2004 2:13 PM
Subject: [TechAssist] Re: Mitsubishi VS6015R
> As mentioned, the picture is as described at all times. The 130v is there
all the time, as well as the rest of the SMPS voltages. Yes I have been
monitoring with a scope from the start. Yes I have schematics. As mentioned
it will not restart after shut down for an hour or so. SMPS uses a relay. I
tried to put as much information in the original post as I could with out
writing a book. One thing that I didn't mention is that it does try to
start. I can see the HV for a split second on my scope. Paul
> Damon <damon101@xxxxxxxxxxxxxx> wrote:1 Is your pix normal then shrinks
before shutting down?
> 2 If you unplug it after shutdown, will it restart?
> 3 What is your 130V supply voltage running at before shutdown/after
> shutdown?
> 4 Got schematics for this?
> 5 Got 'scope for this?
> 6 Is the SMPS powered thru a relay? If not, are you getting the On command
> from the Micro to the switched regulators??
>
> Answer these questions and we might have a starting point to isolate your
> problem.
> (just slip your answers underneath each question)
>
> Damon Brunger
> Telrad Electronic Services
> Ft Wayne, IN 46815
>
> ----- Original Message -----
> From: "Paul"
> To:
> Sent: Sunday, February 29, 2004 10:20 PM
> Subject: [TechAssist] Mitsubishi VS6015R
>
>
> > This shuts down after 10 to 20 min. Will not start again till it sets
for
> an hour or so. It is shrunk vertically top and bottom with a bow top and
> bottom. It is pulled in on the sides slightly, with a slight bow. Horiz
> width adj.does not have enough to fill it on the sides. I have replaced
the
> vertical I/C, caps except the tant.caps and zener diode on pin 1 of I/C.
> Have replaced too many other caps to mention. The power supply voltages
are
> all there. Can not find anything over heating. Have been through the
> convergence circuit and replaced several bad caps. Have replaced the video
> output transistor on all the picture tube boards.Have replaced the HOT.
The
> sound is normal. It gives no symptom before shut down. Don't know where
else
> to look. Paul
> >
> > Paul ,B
> Central TV&Video
> Grover Beach Ca.
> >
> >
>
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> Paul ,B
Central TV&Video
Grover Beach Ca.
>
>
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