[TechAssist] Re: UPDATE Panasonic PT47WX49E Chassis DP820 Hi voltage come up and shuts down immediately

I like to give a dishwasher cleaned board about 24 hours before power up,
never had one blow, even with IHVT's on it.

Damon Brunger
Telrad Electronic Services
Ft Wayne, IN 46815

----- Original Message -----
From: "Hoyt's TV" <hoytstv@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, March 19, 2004 12:15 PM
Subject: [TechAssist] Re: UPDATE Panasonic PT47WX49E Chassis DP820 Hi
voltage come up and shuts down immediately


| I never tried the dishwasher trick but I've been using Lestoil for years.
| Soak the board in full strength Lestoil for a few minutes and brush it
with
| a paint brush to loosen whatever. Then spray with hot water to rinse the
| Lestoil and dirt off. We used a compressed air/water sprayer at the Navy
| Yard restoration shop. I use the kitchen sink spray hose in my shop. Dry
| well with compressed air or whatever you have. I've cleaned the old band
| switch type tuners, boards, chassis with IF transformers, and remote
| controls this way with good results. Some ICs may get water under them
that
| takes heat or just sitting to dry for a few days, but that is rare.
|
|
| Russ Hoyt
| Hoyt's TV
| Exeter, NH -- home of The Free State Project
| http://www.freestateproject.org/index.jsp
|
|
| ----- Original Message -----
| From: "Gerald Gann" <alpha21century@xxxxxxxxxxxxx>
| To: <techassist@xxxxxxxxxxxxx>
| Sent: Friday, March 19, 2004 11:54 AM
| Subject: [TechAssist] Re: UPDATE Panasonic PT47WX49E Chassis DP820 Hi
| voltage come up and shuts down immediately
|
|
| > Jim, Al I don't think so. I is on the back of the board. That was the
| first thing I checked when I saw that. You can even see spots on the top
of
| the plastic that houses the RCA and RF connectors. Jim are kidding about
| putting it thru
| > a "pots and pans" cycle? I have dishwasher at home.
| > Thanks
| > Jerry
| >
| > Alpha 21 Electronics
| >
| > Granite City, IL 62040
| >
| >  Ph. 618-452-8620
| >
| > Fax 618-876-5157
| > www.alpha21century@xxxxxxxxxxxxx
| >
| >
| > Jim Myers <jr.myers@xxxxxxxxxxx> wrote:
| > Panasonic web site shows the board, P/N TNPH0370ADS, with a dealer price
| > of $458.02. Any chance the stuff that got spilled on the board is
| > coolant from a leaking CRT? Consider pulling the board a putting it thru
| > a "pots and pans" cycle, that is if you own a dishwasher. (Some of us
| > can's affort one!:)
| >
|
****************************************************************************
| ***************************************
| > Since 1972
| > Jim Myers
| > Telrad Electronics
| > Fort Wayne, Indiana
| >
| >
| > Gerald Gann wrote:
| > > Good morning group:
| > >
| > > As recommended by Jeff Dougherty Tips came from Tech Repair CD
| > >
| > > 1. Unplugged yokes one at a time. Nothing changed. Tip said Green
| > >
| > > yoke.
| > >
| > > 2. Check C524 out of circuit. Checked good.
| > >
| > > 3. Checked R860, R857 and R858. All good
| > >
| > > As recommended by Robert from H&H Electronics
| > >
| > > Change STK392-110. No change.
| > >
| > > After closer examination of the circuit board, the one on
| > >
| > > the left when looking in the back. The one with the convergence
| > >
| > > IC's, dual tuner and a ton of SM IC's. The only numbers I could
| > >
| > > find that might be the board number is TNPH0370. Anyway something
| > >
| > > has been spilled onto the board. It was all gummed up in-between
| > >
| > > the SM IC pins. Tried cleaning it with board wash. Did not help.
| > >
| > > Looks like board replacement time. I called Try-State Module
| > >
| > > and they are not set-up to work on them yet. Did say they would
| > >
| > > be in about month. Might keep that in mind.
| > >
| > > Called Panasonic about the board and they put it in research.
| > >
| > > Haven't hear back from them. Know it has to be expensive.
| > >
| > > Ernie from Valley TV was trying to download the manual from
| > >
| > > Panasonic website. Must not have had any luck.
| > >
| > > I guess I am on hold till I get the schematic or a new board.
| > >
| > > Thanks
| > >
| > >
| > > Jerry
| > >
| > > Alpha 21 Electronics
| > >
| > > Granite City, IL 62040
| > >
| > > Ph. 618-452-8620
| > >
| > > Fax 618-876-5157
| > > www.alpha21century@xxxxxxxxxxxxx
| > >
| > >
| > >
| > >
| > > Gerald Gann wrote:Panasonic PT47WX49E Chassis DP820 Hi voltage come up
| and shuts down immediately. Could use a schmatic. Any one have any tips or
a
| schmatic I could use.
| > > Thanks
| > > Jerry
| > >
| > > Alpha 21 Electronics
| > >
| > > Granite City, IL 62040
| > >
| > > Ph. 618-452-8620
| > >
| > > Fax 618-876-5157
| > > www.alpha21century@xxxxxxxxxxxxx
| > >
| > >
| > >
| > >
| > >
| >
|
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