[TV] Re: mitsubishi VS-5004R shut down

[Carlos Cordero <carlostvrepair@xxxxxxxxx>]

I took the whole chassis out, and the tv is in my client's house
I can't tell you how is raster.  I'll double check cap around flyback again
Tanks Greg
Star-Tech <STAR-TECH@xxxxxxxxxxxx> wrote:
When you bypassed the relay did the set have a full raster
when you turned up the screens? If you don't have
something wrong with the vertical or the convergence
circuits I would check in the protect circuits, not sure
about your model but would check for any caps that
have leaked on to the the board (near the flyback). I
think you might a protect circuit right behind the flyback
and when the cap leaks the fluid goes on to 2 100k
resistors. Replace cap and clean-up the spill.
Greg Zumbro

----- Original Message ----- 
From: "Carlos Cordero" 
To: 
Sent: Thursday, March 31, 2005 4:44 PM
Subject: [TV] Re: mitsubishi VS-5004R shut down


> I know that J. but the +B is OK. 130V.
> What I know , some tv's needs vertical and horizontal feed back to the CPU
in order to the Cpu works ok. I don't know if this tv is like that.
> "J. Knoll" wrote:
> The tv has a high voltage shutdown circuit in it. If the b+ rises too
> high the shutdown circuit kicks in. Is this what is happening?
>
>
> On Thu, 31 Mar 2005 10:58:04 -0800 (PST), Carlos Cordero
> wrote:
> > I still have problem with this big screen tv.
> > Power supply is fixed, I used mat electrinic repair kit.
> > When I press power, I can listen HV. for less than 1 second then tv shut
down
> > What I did, was put jumper on the relay , I checked all voltage on the
power supply
> > and is OK. and I have HV.
> > I think something is making the CPU shut down the tv
> > If someone has schematic will be a good help for me
> > or if somebody has any idea what could be the problem
> > Thanks
> >
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