Question about Panasonic PT-51HX40 51" Rear Projection Television

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I have PT51HX40B there is a component, looks like automotive coil with three large wires coming out of it, it is smoking when power is turned on. My question is, is this part replaceable or is this TV junk?

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  • Panasonic Master
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Thats the HV block ( Splitter) they are still available

Posted on May 31, 2010

  • katbg Jan 16, 2011

    Where can you purchase one and how much? Is it worth it and can I do it myself, no experience??

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1 Answer

Why no fuel, no spark?


Is there B+ ( power) , voltage to these components, fuel pump ,coils ? B+ voltage to PCM ? Do you know how to test automotive electrical circuits ? Go to you tube an check out basic automotive electrical trouble shooting videos , how to read a wiring diagram .Go to http://www.bbbind.com/free_tsb.html free wiring diagrams . click on electrical distribution under system , then under subsystem power distribution. . Check through diagrams to see where these components get battery voltage , an grounds . Could have a bad power relay. See if they have anything in common . Do you have a DVOM - digital volt ohm meter ? There are videos on how to use one on you tube . Your going to have to test to find out what the problem is . Good luck an happy hunting .

Mar 13, 2016 | 1996 Ford Explorer

2 Answers

Multible misfire on 1997 saturn sl 1.9


You should have a trouble code or codes for the cylinder that is not producing power.
Once you know which cylinder, you need three things to make power.
Spark, fuel, and compression. One of the three components is lacking, such as a faulty injector or mechanical problem.

Feb 27, 2013 | 1997 Saturn SL

1 Answer

Extensive smoke


Is this a karcher hds unit?

There is a device by the air intake that looks like a semi-circle. This adjusts the air flow to the burner chamber. You can adjust this according in order to get rid of the smoke but you have to get it right in order not to have to much air in order to blow out the flame.

If this does not work you may have to clean out the fuel injector and housing. Then if it continues you may have to clean the exterior of the coil.

If you are to clean the exterior of the coil make sure you take the cover off from the bottom three bolts (bolt on to base of machine) and not the three bolts at the top of the housing(were fuel injector is). You can use a karcher product called RM 81 which acts as a degreaser and pressure wash the coil( making sure all electrics are covered up).

I have come accross this a few times as the injector sprays diesel on the coil if the air flow is not fixed correctly and then the smoke you are seeing is the machine burning off the diesel that is on the coil.

Apr 10, 2012 | Garden

1 Answer

Where does the middle wire on the distributor cap hook into


The ignition coil is the unit that takes your relatively weak battery power and turns it into a spark powerful enough to ignite fuel vapor. Inside a a traditional ignition coil are two coils of wire on top of each other. These coils are called windings. One winding is called the primary winding, the other is the secondary. The primary winding gets the juice together to make a spark and the secondary sends it out the door to the distributor.

You'll see three contacts on an ignition coil, unless it has an external plug, in which case the contacts are hidden inside the case. The large contact in the middle is where the coil wire goes (the wire that links the coil to the distributor cap. There is also a 12V+ wire that connects to a positive power source. The third contact communicates information to the rest of the car, like the tachometer.

Hope this helps (remember to rate and comment this).

Nov 23, 2010 | Mazda B2600 Cars & Trucks

1 Answer

Have a Evcon model #GCGD36S21S2A Puppy chewed wired and now compressor won't kick on nor will thermostat turn on. Three wire system but looks like only white wire was hooked up. Nothing when rubbing white...


There will be 2 wires hooked up in order for the system to operate, the color of the wires are not really stanard, allot of installers will use colors of their choice, it usually is yellow and blue, but the only way to know for sure is to remove the thermostat from the wall and see what colors are hooked to the "Y" and "C:" terminals... then make sure that those two colors are connected to the 2 wires that are out in the outdoor unit - air conditioner, at the outdoor unit, it does not matter which color goes to the wires.
example: lets say the outdoor unit has 2 yellow wires, and lets say that the 2 wire that are connected to the "Y" and "C" terminals at the thermostat are yellow and blue, just hook the blue wire to one of the yellow wires that come out of the outdoor section of the air conditioner, then hook the yellow fron the thermostat to the other wire coming out of the air conditioner. All it is doing is energizing a coil in the contactor in the outdoor unit, like a light switch that gives power to the compressor. Now........
If the 2 wires coming from the thermostat were touched together, that would creat a direct short in the 24 volt circuit in the furnace - inside of the house, hopefully the model of furnace or air handle will have a spade type automotive fuse located on the computer board in the furnace, if so this would save the board from shorting out, so look on the board, find the fuse and see if it is blown, if so replace it with a automotive spade fuse of the same type, usually 3 or 5 amp. If there is no fuse it is a good chance that the 24 volt transformer of the board itself is shot - this will require a AC tech.
NOTE: Turn of power to the furnace and the A/C outside, before looking at anything. The thermostat wire to the out door unit is a 24 volt line, this is usually a pencil or smaller sized wire, "Brown" or sometimes "White".
I wish you the best, and hope it helps, I am new to this site, so I am still getting use to it.
Sincerely,
Paul Gibson

Mar 31, 2010 | Heating & Cooling

1 Answer

1980 El camino three speed, having a sudden loss


Try replacing the ignition module and check the pick-up coil for broken wires. The wires on these pick-up coils are solid and after years of use can break inside of the insulation. Also check the vacuum advance hose for cracks and the unit for proper function. The vacuum advance pulls the pick-up coil and rotates it to advance the timing causing the wires to break. To change the pick-up coil you will have to pull the distributer out of the engine and disassemble it, meaning that you will have to remove the gear from the bottom and pull the shaft out which may not be easy because of years of grime build-up inside of the distributer housing. Also check the vacuum modulator on the transmission (the cylinder looking thing that the vacuum line from the engine connects to) for trans fluid in the line and being sucked into the engine. Usually when its bad you'll notice white smoke coming from the tailpipe.

Dec 05, 2009 | 1987 Chevrolet El Camino

1 Answer

TV smokes when you turn it on and no picture


Check to see where the smoke is comming from, the far left side of the unit, it is probably the flyback/horizontal output transformer. The big gray/black thing on the board with the two red wires out of the top of it.Replace the horizontal output transistor (D2348) with a new one to increase reliability. It is the large three leged transistor to the left of the transformer. Use Sony parts if possible.

Dec 02, 2008 | Sony KP-41T65 41" Rear Projection...

1 Answer

I have a mitsubishi 1080 series 72" If the power blinks at any time with the set on or off the little green light by the power button will blink and it takes days before the set will turn back on. the...


If you are lucky, it's only a blown fuse. Some tv's this large have more than one fuse, so look real hard and find all fuses. If fuses are good, then about 95% of the time, when you have no picture/no sound, the problem is a bad H.O.T. This is a large transistor with three pins soldered into the main board and is very easy to find because it is connected to a metal "heat sink". Look for a large red or black wire coming from the pic tube down to the main circuit board (sometimes it's blue, but it's the only wire coming from the GLASS part of the tube to the board. This wire goes to about the largest component on the board called the "flyback transformer". It is usually black and is about 3 or 4 inches tall, 2 inches wide, and 2 inches thick. The h.o.t. will usually be located in the area of the "flyback". The h.o.t. will be screwed with one screw or clamped onto a large piece of metal (usually silver). This piece of metal is usually about 2 inces square and is about 1/8 of an inch thick and is mounted perpendicular to the main board. Imagine a slice of bread standing on one side rather than lying flat and this is what the heat sink looks like. Sometimes you will see several heat sinks with transistors screwed into them, but the one you are looking for will always be the largest transistor with three pins. Don't forget to unplug the tv before you begin and stay away from the large wire coming out of the tube going to the "flyback". Do NOT unplug this wire from the tube. It can shock you very badly EVEN WITH THE TV OFF FOR SEVERAL DAYS. Just be careful and go ahead and give this a try. You can do it, and this is probably going to fix your set. If not, then replace the flyback transformer. The H.O.T. is about $10 or $15 and the flyback can be from $30 to $80. It is possible that none of this will fix your set, but you have about a 95% chance that it will and with such a big and nice and relatively new set, I would give it a shot. Keever

Mar 05, 2008 | Televison & Video

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