Question about Panasonic PT-47WX42 47" Rear Projection Television

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Woodgrain effect lines on picture

Took to repair shop, tech said after two days of troubleshooting, he took signal board out of 2nd TV and put in mine, and the picture was great. Claims components cannot be replaced on the signal board and will contact Panasonic for price of new signal board on Monday. Also said there is a place in Ohio that rebuilds Panasonic boards which may be cheaper. Any comments or sources of signal boards?

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Re: woodgrain effect lines on picture

Dont know if youre still looking for a signal board or not but this site has one. I hae used this site numerous times their products are great and prices cheap.

Posted on Feb 22, 2008

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We have a toshiba projection tv 50H72. we are getting picture distortions of lines verticle & horizontal. convergence has been rest, the only way to get rid of the squiggly lines is to turn tv off...

There is a common problem with this particular model that involves what is known as the"Hypermodle" this is a cuircit board that controls signal processing. The symptoms you describe sounds similar to this problem. This board has 11 very small parts call capacitors,that go faulty over time and get worse with more time. Ideally replaceing this board was the right thing to do in the past however since this was a common occurance the boards quickly became in short supply. Toshiba issued a Service bulliteen to shops on how to repair them. I repaired 2 of them a month at the shop. Now this is a repair that only the most experience tech should attempt. very small parts and easy to damage if not done right. Our shop generally charged around 250 to do this repair. most of the cost was in labor. but always ask if they have done this repair before.

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I have 60 inch zenith inteq projection TV no picture or sound it powers up fine took it to a repair shop tech guy said that a whole board need to be replaced but the board is a discontinued item said it...

May be you went to the wrong place, find another repair shop where they work that brand and type of tv. Doubtless, some parts are discontinued, but they will take parts of another equipment that are dismantled. Good luck.

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1 Answer

I hired a TV repair guy who came in took my board to replace the chips, took him two months to get the chips(so he said) then showed back up with it and it didnt fix the issue. Then left again with the...

it would be better to reset it to factory settings first and then configure the settings the way you want it afterwards... do you know that guy? is he even working for a known repair shop in your area? he might not be a certified repair guy...

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1 Answer

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Hi, your other option is to talk to other repair shops in your area, or call zenith (LG) and ask for repair shops they recommend, tech u talked to wants the easy way out rather than troubleshooting the board to find the 1,2, or 3 parts that are actually bad, be advised that the good old zeniths are now owned by LG industries and contrary to the tv commercials that tell you "LG" = lifes good, it actually stands for lucky goldstar the korean outfit that has owned zenith for quite awhile now, sad but true, video-tek

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1 Answer

Convergence problem ,Help Please

Something is not right here. Is there any possibility that you can get the circuit designation (Rxxx) of the resistors that were "incorrect"? I am not aware of anything like this that can cause the "memory to be erased". The only memory in that area would be the factory convergence settings which can be modified from the service menu. Please try to supply the resistor IDs and I'll check on this.


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1 Answer

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THis set is notorus..bad to converge at the shop seting the convergence takes up alot of my time... you may have to get a technician to converge in factory or service model.. this is something a non tech should not due "you can mess it up good" there may be a convergence amplifer board problem too. suggest getting a tech to chech it out. IF you can converge at all is a good sign that it might just be adjustment. average repair for this is 100 to 200

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Unless you can do tv repair your set has more wrong with it then something minor,it more then likely has a shorted Hori out put transistor NTE2973 and maybe open pico fuses.Take set to repair shop. ThankYou for using FixYa. Have a Nice Day.

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2 Answers

No power with remote or manual power switch

Your convergence module is probably bad. It is a plug in module, so labor would be lower if the convergence settings are still good. The bill would be about $300.00 If not, the labor for convergence would add to the bill. If the whole job needed full convergence the cost would be about $500 to $600. Hope this helps, Lee

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1 Answer

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On alot of these Toshiba TV sets, there is a fuse called F860 that will blow and the light will flash because of bad solder connections on C 810, and C 809, on the negitave terminal. I have seen many of these boards condemed by non-authorized Toshiba repair shops. Good Luck

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