[TechAssist] Re: Mitsubishi PTV - Woes!!!
- From: "Leonard Caillouet" <lcaillo@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 17 Oct 2005 10:55:37 -0400
Danny,
Be very careful of coolant. I had one with a leak on the deflection board
in the area of the H drive circuit that arced out and burned a hole in the
board that you could put your thumb through.
These also sometimes have a few high ESR caps in the low voltage supplies
that cause some strange problems.
Mostly, however, we see the yoke connections needing to be resoldered.
Leonard Caillouet
Electronics World
1261 NW 76 Blvd
Gainesville, FL 32606
352-332-5608
352-332-5668 fax
----- Original Message -----
From: "Danny Garris" <dgarris@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Saturday, October 15, 2005 2:43 PM
Subject: [TechAssist] Re: Mitsubishi PTV - Woes!!!
Thanks for ALL the great helpful replies everyone! I checked every tip given
and performed that I thought it needed. Lastly I DID solder all the large
yoke plugs, (there were some very small ones on there also but I only
soldered the large ones) and so far it has been playing flawlessly - Only
time will tell. I did find coolant fluid on the Main SMPS board and I
cleaned that up VERY well, problem was still there after clean-up. I even
made a large plastic deflector for future prevention of any coolant that may
leak out once the set warms up and coolant leaks out the expansion camber.
Soldering Yoke plugs helped BUT ONLY time will tell. I'll post in a few days
if all is still ok. Thanks All.
Danny Garris
GARRIS RADIO & TV
New Bern, NC
(252) 638-5577
dgarris@xxxxxxxxxxx
>From: "DAMON BRUNGER" <damoneb@xxxxxxxxxxx>
>Reply-To: techassist@xxxxxxxxxxxxx
>To: <techassist@xxxxxxxxxxxxx>
>Subject: [TechAssist] Re: Mitsubishi PTV - Woes!!!
>Date: Sat, 15 Oct 2005 06:22:37 -0500
>
>I had a nightmare with my very First VS-4543....No picture, won't come
>on......
>DID YOU SOLDER the yoke's plugs??? All that friggin' time I spent on the
>Main boards...and Mits adds plugs to their yokes....now it's the most
>consistant Failure Point on that model.
>
>Damon B
>Telrad Electronics
>Fort Wayne IN
>----- Original Message -----
>From: "Danny Garris" <dgarris@xxxxxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>
>Sent: Friday, October 14, 2005 1:43 PM
>Subject: [TechAssist] Mitsubishi PTV - Woes!!!
>
>
> > What: 45" Projection TV
> > Make: Mitsubishi
> > Model: VS-4543A
> > Chassis: VZ3
> > Made: March 1997
> >
> > Problem: Set will play for 5 or 6 hours fine! Then it may quit (dead).
> > Afterwards, it will not turn on again, even unplugging set overnight, it
> > still will not play. The relay clicks on and instantly clicks off. Wait
> > several days and plug set in and it may play fine again for a few
>days/hours
> > - then quit! ...and will not come back on... just hear relay click on
>and
> > then off.
> >
> > Note: I've carefully resoldered everything on all PC boards - it played
>fine
> > afterward I did this for about 7 hours then quit again! ... now it will
>not
> > come back on... relay clicks on then off! When it did play picture and
>all
> > was excellent!
> >
> > Help! Anyone seen this one before and recongnize this it?????
> >
> > Danny Garris
> > Garris Radio & TV
> > New Bern, NC
> > (252) 638-4477
> > dgarris@xxxxxxxxxxx
> >
> >
> >
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