Question about Panasonic PT-47WX49 47" Rear Projection Television

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Re: thanks I do not want to go through the soldering trouble again. So how much would it cost if I just replace the whole board (with new IC's and resistors on it), I can install it myself. Also where can I purchase the board?

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Those boards are no longer available through panasonic. The only option is to have yours rebuilt. The link I provided for the resistors do rebuild boards you may want to leave them a email with your model number and mention its the A board. I am not sure of what the cost would be , But I do know that board was 485.00 when panasonic had them still available, as quite a few of my customers needed that signal board for that same chassis.
Heres that link again

Posted on Jun 27, 2008


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I have a Polaroid HD TV / Monitor its on the Configuration page and I can't get it off it, I can't seem to exit out of it now, I have the correct remote.

The tuner section has the trouble. There is a memory IC [ a small IC which have 8 solder terminals], can be located very near to the main system control IC. Eventhough the size of it is small, its function on circuit, when the tV works is great. Trouble to this IC can lead to many more strange faults, that even a technician will get confused.
All the values, of tuning, color , contrast, and other adjustments we do with remote control or by the front panel of the Tv will be stored in this memory IC, and will retrieve to main system control IC, when we switch ON the Tv.
Now, this IC in your set is defective, and should be replaced with same type and number. It's number is very important, and must note it very well before buying a new one. This component can be bought from most of the electronic spare part selling shops at your town and won't cost more. But to replace it, you must have through knoledge in electronics. You have to ipen the TV, locate this IC, desolder it out from the board, and a new one to be soldered in.
If you have sufficant knoledge in electronics, enough expereince i solder technique, you can do it by yourself at home. If not, just get this set repaired by any expereinced service technican. OK.

Feb 13, 2012 | Polaroid Televison & Video

4 Answers

Convergence IC"S

not unless you damaged the board, & theres no part of it have to be soldered and circuit is damaged, then it could be needed a new board.. but try to check if theres something to correct into your soldered parts and correct it again using a soldered pump to remove the bad solder.


May 02, 2008 | JVC AV-65WP74 Rear Projection Television

2 Answers

My 32lg30 was shorted out during a lightining strike in a storm the other night. plug it in, and press power, and now nothing works. reset button or replaceable internal fuse? I am tech savvy so I can do...


Here are some basic steps that will help you fixing the problem.

I'm assuming that your unit is dead set without an standby LED light and your outlet is live.1.Power cord - check the cord it might be opened (no continuity).This is due to frequent bending,pulling. 2. Power switch - check for dry joints, open contact. 3.Check the internal fuse- sometimes the fuse fail because of the power surge, replacing with new one will cure the problem, If this is the case I would advice you to use surge protector/AVR (Automatic Voltage Regulator). However if the fuse blew again this is an indication that you have a shorted parts in the power supply, you may visit the link for more info. If no reaction and still the unit didn't power up then you have an open parts on the power supply.

4.If you see that the fuse is intact , don't attempt to touch anything because there some fatalcomponents stored electricity enough to hurt you with a simple mistake only. I would advice you to look for a professional to troubleshoot the power supply. If you want to repair it yourself make sure that you have necessary tools and test instrument. First check bad solder joints(re-solder all cold solder), leaky electrolytic capacitor(sometimes it has bulged at the top but not all, you better have a capacitor checker), open/shorted regulator transistor/IC(mounted in heat sink), open fusible resistor (caused by shorted regulator Transistor/IC), shorted zener diode.

You may also replace the entire power supply board, click this LINK.

Hope I helped you.

Thanks for using fixya.


Jun 04, 2011 | LG 32LG30 32 in. LCD HDTV

1 Answer

It looks like the picture is in 3D. How do I fix this?

Hi mmoir333,
If the symptom can't be fix by convergence set-up from the tv through your remote control then the trouble is internal and it is caused by bad convergence board. The most commonly faulty parts in this board is the convergence chip/IC. Once replace by IC/Chip your unit will back to normal again. Also you have to check for open fuse/fusible resistor in line with its power supply. Bad solder joints will do the same problem, I would advice you to re-solder first on that board and spot some cold solder.

If you don't have necessary tools and test instruments, and can't do the job yourself, I would advice you to look for a professional to troubleshoot the problem. Don't attempt to work internal if you don't know the safety precaution of handling it, there some stored electricity enough to hurt you with a little mistake only.

Hope I helped you.

Have a nice day!

Thanks for using Fixya.

Feb 17, 2011 | Hitachi 61SDX01B 61" Rear Projection...

1 Answer

Can't see the top of the show, black bar across the top of the screen, about 2 inches wide. Tried unplugging and plugging back in

your Philips tv has trouble in the vertical scan section. You are seeing the vertical foldover at the to pe the picture. There are mainly three reasons for this fault. The first one is vertical output IC trouble. The second one is voltage going to the vertical section is low. Thrid one is capacitors trouble.
You just open your TV. after unplug it from the mains wall socket, and locate the vertical output section. It is very easy to locate. Just look at the deflection yoke, a coil fitted around the neck of the picture tube. There will be four wire going from it to the main board. Out of which tow of them will be thick, and other two will be thin. Follow the two thine wires, and you will see it as plughed onto the cirucit board. Just upside down the circut board and trace the tracks of that two wires through the circuit board. It wil guide you to the vertical output section.
You can see an Ic, vertical output Ic, in some sets it may be consisted of transistors, screwed onto a metal heat sink. Just liik keenle on the solderings at the legs of the Ic. Loose solderings also cause this problem. It is very difficult to detect the loose soldeing, as they will be micron types, so just resolder all the suspected points by applying a little more solder; and look the effect. If it doesn't help, check the voltage at the voltage input pin of that Ic. It will be atound 28 to 35VDC. If it alos is there, suspect the capacitors around the Ic. Replace all of them, they will be less in mumbers, mostly 6 or so, and is not ver costly. This will resolve your problem.
If you need anymore assistance from me, get me through Fixya. OK.

Dec 03, 2010 | Philips 27PT8302 27" TV

1 Answer

Just white screen cannot get thru with calls. tried software but in vain i was told you need to change the PCB which cost about 600 to 700 rs.. the set will function.. pl advise where i can purchase the...

Hai, In my country, we do not change the main board, because the cost is equal to the price of a new, why you need to buy the main board under the warranty repair only the longest one month? whereas if you buy a new or used, it is more worthwhile. If you have tried to change a new LCD display screen, but the results remain the same, perhaps it is divided UEM ic problem, this happens because you always fall. ic is too close to the frame. hentakkan effect on the frame due to falls, may interfere with the original position, if the worst Solder balls under the ic off. If you are lucky. Try to heat the surface of the UEM ic, add Solder flux before the process is done. Solder balls when you get looked melted, press the top surface is a soft ic so it does not directly close to the surface of the board, as this can make Solder ball attached to one another, if you have a place to sell spare parts for ic, it is better there ic change is the new home you buy a new board. cheaper cost, but I do not know the cost of installation if you sending to your technician.

Aug 06, 2010 | Nokia N70 Cellular Phone

2 Answers

Samsung HCP4752W convergence board?

I couldn't decide whether or not to attack the IC Chips or the whole board, so I took out my S&W model 59 and pumped 11 9mm rounds into the whole chassis! Sets works as new as long as 'new' means comes with 11 bullet holes in chassis.

May 12, 2009 | Samsung HLN437W 43" Rear Projection HDTV

1 Answer

Philips TV Model 32DW6557/05 Screen Problem

hi it sounds like a capacitor in the verticle circuit located on the main board. it is near the verticle ic. the verticle ic also could be bad the cost is around 85 dollars for a tv shop to fix. sometime a cold joint could be found around vert ic. a soldering iron is required with solder.tap the side of tv if picture comes back it is just cold solder joint.

thanks Doctor video

Apr 25, 2008 | Televison & Video

2 Answers

Bad Solder

I don't know if you can buy the boards anymore, ive always replaced the IC checked the resisters, i can point you to two websites that have instructions.
i would also replace the IC with the stronger ones stk392-180's and i would replace both no matter what.

Dec 10, 2007 | Hitachi 53UWX10B 53" Rear Projection...

4 Answers


Hello Renee, You have a convergence problem, but you are adjusting the wrong system. You need to adjust the convergence rings first ok You need a dot and crosshatch generator to properly set convergence for this set. Connect the generator set the TV to channel 3 and turn on the generator set it to dots adjusting the convergence try to get the center dot RGB all together and then adjust for the outer edges using the convergence board. the use the crosshatch to adjust convergence along the lines of the crosshatch pattern. Remember use the rings first and the the convergence board adjustments.

Sep 24, 2007 | Toshiba 43H70 43" Rear Projection...

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