Question about Toshiba 50HP66 50 in. Plasma Television

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I nave a toshiba 55.in plasma tv model 50hp no picture just sound

I was thinking it may be the video board, please advice thankyou.

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  • Toshiba Master
  • 14,553 Answers

Problem with a Plasma is it can be:

Power supply issue in set.
Almost any board pulling voltages down.
Main signal board that controls everything bad.
worst case is display panel (entire front screen unit) bad.

Best advice is get it to a shop and get an estimate.

Posted on Dec 03, 2012

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Posted on Jan 02, 2017

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  • 148 Answers

SOURCE: I have a 3 years old 42

The caps (capacitors) in the powerboard are going out. This is a very common problem in all class and price ranges of modern lcd and plasma tv's/ monitor's. I don't know if this problem has been like this for awhile or it just started, but either way, if the tv takes an abnormal amount of time to "warm" up then it most likely will go out all the way sometime in the (near) future. If you have a tiny bit of will and knowledge ypou can open the unit and get to the print board. Examine this for "popped" capacitors, they will have a buldging top instead of a flat one. Im gonna try to include a pic of them here, if i can get it this time, I've tried bfore lol. But you can google image a "popped" or "bad" capacitor and you would be able, with ease, to diagnose if you have any of these. Usually only one or two. Radioshack sells capacitors (couple anyway) for $1.59 each. MAKE SURE the replacement is of the SAME voltage or HIGHER, or you will be right back replacing those 2. Every capacitor has a negative pole marked with an (-) on the side of the capacitor(by one of the "legs", always puit the negative (-) "leg" of the new capacitor in the same hole in the printboard as where the previous negative (-) "leg" of the capacitor was ( a capacitor with the negative and positive "legs" put in backwards will result in the new piece "popping" as sson as you turn it on!!) make sure the "uf" rating (for example the most common popped capacitor is the 1000 uf) is the same as the one you are replacing. I needed 1000 uf, 105 c and 26v (volt) ratings for the 1 capacitor I needed to replace to fix my LG 19" lcd panel monitor I found by the trash that the light came on off, but it didn't come on. I replaced that capacitor with ; 1000uf, 85 c and 36 v (volts0...It works fine eventhough the volts and the temperature rating (36v and 85c) was not the same as the (26v(volt) and 105c ) capacitor I removed !! Further, I've replaced capacitors that had the celcius rating of 105 with the only ones Radioshack had, namely 85 c(celsius) they have been working great, but I'm not sure about any effect, nor have I heard or read (yet?) about that making an urgent difference. Many threads that I've read people have done the same, so we should be ok (my stuff has been running good for a while longer then most brand new ones!.............(all these ratings ; 'uf ' and 'c' etc are on the side of the capacitor you are replacing and on the side of the ones you are replacing them with)...For all this all you need is the cheapest solder gun u can find (I bought one for $7.99 at Radioshack), a camera (to take pictures as you go to remember how to reassemble the unit) and, once you have your materials, 20 minutes to replace 2 or 3 capacitors and you are good to go...Most monitors and tvs (lcd/plasma) I've seen you have to lay flat on the ground/bed/blanket etc, to work on (screen side down). Usually there are 2 or 3 screws (or a few more) to remove, then you will have to carefully (its comes off easily most times)insert a flat screwdriver inbetween the casing and gently pry it up as you go around the whole frame. Sometimes you have to remove the little washer arouind the cable input orso, just be gentle and you cant go wrong. Once insidet here will be a box with wires running to the sides etc...unplug, gently, these wires and open the box. Inside you will find 2 or 3 circuitboards, check them all for "popped" capacitors, replace, reassemble and plug it in....Have fun becoming an overnight tv mechanic lol! ...If this helped (or not )please rate,thank you!2c66514.jpg

Posted on Feb 03, 2010

  • 3 Answers

SOURCE: No picture

You have a bad Y sustain or bad Z sustain! End of story! Please feel free to give me a call if you would like more info!

I'll help u fix your TV!

Ask for Dave @ 1-503-432-9904 or message me @ pleasefixitdave@yahoo.com

Posted on Sep 11, 2009

  • 6 Answers

SOURCE: 42" Toshiba Plasma TV no picture or sound

My experience with 42" plasma tv's with no picture or sound was a missing power supply voltage. On the power supply board check voltages on the plug. The voltages should be marked on the board,

Posted on Mar 02, 2008

  • 50 Answers

SOURCE: Toshiba 42" plasma tv 42HP66. All of a sudden, no picture.

Hello, You may have a bad power supply! Its hard to say! I need more info! please feel free to call or message me if you would like more help with your TV!

Thank you!

Dave
1-503-432-9904
pleasefixitdave@yahoo.com

Posted on Aug 26, 2009

  • 1 Answer

SOURCE: My 32HL57 model tv has sound but no picture?

en francais

le modul est fixé sur l'ecran
sur ce modul verifier si vous avez 3.3 volt (trois regulatuer avec un test point) si vous n'avez pas 3.3 verifier les deux fusibles F1 et F2
F1 devrais etre ouvert ....
bonne tv ;)

module is fixed on the screen

this modul check if you have 3.3 volts (three regulatuer with a test point) if you do not have 3.3 Check both fuses F1 and F2

F1 should be open ....

good tv;)

Posted on Oct 05, 2009

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