Question about Toshiba 42HP82 42 in. Plasma Television

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Toshiba 42HP82 I have found the the main board is bad, P/N 72790204. I have looked around for some time now trying to find a cheeper price then 1,314.86 which their are only a couple of places that sell them to begin with. Do you have any idea where to find them any cheeper.

Posted by Kurt Weber on

  • hebardk Mar 07, 2009

    While looking at the price of parts for my Toshiba LCD I came acrossed this site. I am not sure if it will help but here it is.

  • livin_it_up_ Mar 19, 2009

    hi my name is dan and i have the same plasma tv with same 42hp82. trust me u can't find just the parts u need to replace that board thay don't make them. it's ******** all that money fot the tv and i only got to watch it for 3years. people stop buy flat pannels tvs. the companys have found away to sell something for alot and thay don't last long, i mean come on i can buy a tube tv and it will last 30years not plasma's or lcd $2500 for 3 years. it don't add up.



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Hi i seriously doubt if you'll find a cheaper board unless it's stolen or in the black market what did you expect from that kind of big arse t.v have a good 1

Posted on Mar 29, 2006


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How do I solve a power up / switch on problem with a Toshiba TV model REGZA 37WLT68?

may be a bad Capacitor on the motherboard, or its a bad power supply board. upon disassembly look at the Caps (image posted) near where the power goes into the tv. Typically larger ones. if any of them look swollen or burnt, then that is your problem. it must be de sautered and replaced with one of the same specs. if all of them look okay, then you probably need a new power supply board, which should be seperate board from the main board of the tv, depends on the model though. Also, check all around the board, there may be a bad (watch) battery on the board or a bad (glass) fuse.(also imaged)


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Difficulty turning on

while I do not have specific experience with this particular TV as of the moment of writing this, the complaint you have is a very common one accross the board.

it is caused by one of two things: bad power supply or bad main board.

When in the power supply it is usually (not necessarily) caused by electrolytic capacitors (cylinders with aluminium tops standing vertically on the board) going bad. If so then those can usually (again not necessarily) be seen with naked eye as bulging on top.

The same can be true for the main board, but capacitors there are much smaller in size and harder to see bulging; more importantly, when in a main board it is often a result of a cold solder joint, usually in a BGA array (solder balls under the ICs as opposed to solder joints of legs around the IC). That can be difficult to find and more difficult to resolve.

What you can do is open the TV and look at your power board.

If in doubt you can send it to us for evaulation and service if necessary. Shouldn\'t go above $80 total, possibly less.

Hope this helps!

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1 Answer

Looking for the price to a toshiba satellite serial number Z6285774k

This model is no longer in circulation and may not be available in most computer stores.

If you try to look around online most of the stores would no longer provide prices. But here are some information found: - (NEW) $499.99 - (USED) $100-$150

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1 Answer

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The five times I ran into this problem on these model sets it was caused by bad main board three times and bad lcd display panel,(screen) one time, and bad solder connections at a connector on the main board the other time. You can try to search model number and board description for pricing. Chances are a repair shop will charge 100-400 u.s. dollars to fix this problem. Good luck with your new disposable flat screen.Russmann.

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1 Answer

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More often than not, this is caused by faulty sustain boards. I would like you to take off the back cover and observe for faulty caps on the two boards labelled X-main and Y-Main. The electrolytic caps(will be cylindrical in shape and will have an X mark at the top)caps will be bulged, cracked or blown off if they are bad. If its ceramic caps you are bound to see some burn marks on the board near them. Look for any other signs of evident damage, and if you find any replace both of the sustain boards(should cost you around 150-200$) as these boards usually take out one another when they go bad.

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1 Answer

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i have the same tv with the same problem, did you find out what it was?

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1 Answer

Troubleshooting main board.

Three things to look for in service with LCD monitors,
1 bad capacitors
2 Bad transistors for the back light feeds
3 bad ic pulse chips for the Non function circuit
you will not find schematics unless you peruse the patent office records, reverse engineer the circuits and you will have a schematic
when the main chip fails on the vga board its time to buy a new vga video board,
sounds like your board may be suffering a bad IC telling the main chip the power is OK

let me know how it goes.

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1 Answer

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You can sent it to a compy called pts to have it rebuilt. much cheaper . whats wrong with the tv that you need a main board?

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