Question about Mitsubishi WS-55313 55" Rear Projection HDTV-Ready Television
I was recently moving some circuits in my basement and ran across a
borrowed neutral wire that was from another circuit which I was unaware
of at the time. Well, when I turned the circuit on for my A/V wall,
there was no place for the electricity to go and I obviously damaged a
The most expensive being my TV. It is 5 years old and out of the extended warranty so I took the panel off the back and noticed the blown fuse right by the incoming cord. I replaced that but now, when I plug the TV in, the fuse immediately pops.
I'm sure there are a multitude of possible problems but I'm not sure if it's worth fixing. My friend said it's probably a transformer and to take the board out and he'd replace it (I think there are 3 boards on the bottom of the TV). I don't really think it would be that easy. Does anyone have an opinion on whether or not I should repair it? There was absolutely nothing wrong with it until the wiring mishap. Any insight would be greatly appreciated. If I need to explain what happened in greater detail, please let me know.
Thanks in advance for any replies.
SOURCE: Mitsubishi WS-55819 power issue
This model is equipped with a self-diagnosis feature to help with diagnosis of shutdown problems. To activate this turn the unit on let it shutdown then press the input and menu buttons on the front panel simultaneously and hold them in for 5 seconds after 5 seconds the power LED on the front panel will blink a two digit sequence. This will be one set of blinks a short pause then another set of blinks, this will repeat 5 times. 1 - 2 = no error detected 2 - 1 = X-ray protect (high voltage or beam current) 2 - 2 = Short protect (short protect monitors low voltage supplies) 2 - 3 = Deflection protect (this could be loss of vertical or horizontal deflection) 2 - 4 = Vertical protect (usually loss of vertical from the source) 1. SHUTDOWN AT POWER WITH SELF DIAGNOSIS ERROR 2 2. CHECK FOR LEAKY C9A60 470 PF 1000 V PART # 154P400030, PARALLEL TO D9A57 ON THE POWER PCB (NOT SHOWN IN THE SCHEMATIC). 2. SHUTDOWN AT POWER WITH SELF DIAGNOSIS ERROR 2 2. CHECK FOR OPEN FUSES F9A04 AND F9A05 PART # 283P043090 ON THE +24 AND -24 VOLT LINES. IF THE FUSES ARE OPEN THE CONVERGENCE OUTPUT CIRCUIT WOULD BE SUSPECT. 3. SELF-DIAGNOSIS INDICATES SHORT PROTECT. CHECK FOR A SHORTED IC4B01 PART # 270P261020 (VERTICAL OUTPUT) LOADING 24-VOLT SUPPLY LINE. LOCATED ON THE MAIN PCB
Posted on Aug 12, 2007
The four cap replacement in DM module repair is simplistic
and incomplete, as you found out. ALL defective DM modules
have bad SMC's ( small "top hat" caps) AKA surface-mount
capacitors that can be changed only by the most highly skilled
bench techs. We used to change out hundreds years ago in
camcorder circuit board repair.DM board repair is a much more
accessible,thus more "do-able". For more info.............T.
Posted on Nov 05, 2007
this model is famous for fluid leaks. each projector tube has a
reservoir on the front of it with a fluid in it. this keeps the face of
the tube cool.
this depends on how bad the damage is in the tv. in most cases we can reseal the tube and clean up the fluid 400-600.
take the tube out you will see where it leaked. The problem is that the
frame on the CRT that the heavy screws with springs are mounted on (that
hold the lens coupled to the CRT) is weak and they can bend. We have seen
several that have leaked after the customer moved the set. You can only
tighten them down so much because the frame bends. It is just stamped metal
and not welded at the corners to support the bend.
We remove the CRT, clean it all up, add a very small amount of RTV sealer to
the gasket, reassemble, let the RTV cure thoroughly and refill with coolant.
The extra sealer should prevent future leaks. Haven't had a recall yet.
Mits says replace the CRT...too costly.
You msut check the yokes carefully as well. If any coolant gets into them
you can end up with shorts there and a mess.
Clean the boards carefully and repair any corrosion damage. The coolant is
ethylene glycol and glycerine which is water soluable.
Posted on Jan 23, 2008
SOURCE: VS-60601 Mitsubishi Problem...
That model is famous for the CRts leaking onto the chassis which causes all kinds of problems and can cause the main circuit board to short as well as destroy the solder. Try looking at the board for evidence of a pastey substance that would indicate CRT coolant leakage. Let me know what you find.
Posted on May 04, 2008
You should re-consider having a tech do that for you. The access is by removing the screen assmbly which are somewhat fragile. If you want to give it a try, pull the speaker grill off, it comes off just from pulling it, there should be five screws across the bottom of the screen assy, remove those, there is also an access door on the front of the set with four screws, that has to be removed to unplug the cable that goes to the screen sensors. The screen assy has to be lifted straight up an inch or two and then you can pull it forward away from the set.
As far as cleaning the mirror and lenses, you can't get to the face of the tubes so it's the top of the lenses that you clean, just use a soft lint free cloth (cloth baby diaper) and wipe the dust off the lenses, you can slightly dampen the cloth with water if necessary, same type of cloth on the mirror and you can use a glass cleaner on it just don't press too hard on the mirror.
Posted on Feb 05, 2009
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