Question about Philips Magnavox 27MS343S 27" TV

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Tv has a big black in yhe middle,does that mean that the picture tube is going out

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Re: Tv has a big black in yhe middle,does that mean that...

When turing on the tv a big black circle comes in the middle of the screen, we have tried to see what will happen if we turn the tv off and turn back on but once we turn tv back on the black circle appears again

Posted on Oct 08, 2007

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Re: Tv has a big black in yhe middle,does that mean that...

No that is not the sympton of picture tube failure. please give the details of your problem so we will get you solution.

Posted on Oct 07, 2007

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How long u have this RCA analoge tv?Around 10 years or more and used it like about 5 or 6 hrs everydays?Yes,than ur tv it is losing CRT tube radiation cohetion.As times go bye years in years out the tv CRT-(tv tube) radiation will slowly dying out,Tv actual pictures will lost some of it luster and it brightnesses to the tv auctual pictures.Brightnesses of CRT tube will get darker and darker until the tv actual pictures barely it is watchable anymore.Contrast,Brightness and Colors adjusting more will help some.But u have to take this tv aparts and take a Flat scerw driver turn up a little bit more of the tv HV-(high voltage) SCREEN button on the FBT-(flyback transformer) to make any big differences of the CRT tube brightnesses.The FBT-(flyback tranformer) is the big block of plastic with a red wire with a black cap hook up to the tv CRT-(tv tube).This adjustment on of the FBT,HV-SCREEN button will help the tv CRT-(tv tube) last another year or two.

Aug 16, 2011 | RCA TruFlat 27F520T 27" TV

3 Answers

F31672et rca tv

Is this a projection/plasma/CRT?

Oct 03, 2008 | RCA F31672ET TV

2 Answers

When I turn it on, it makes a buzzy noise but nothing else., no picture or tv sound.

The set has a high voltage problem, "the flyack transformer is defective" It generates the high voltage in the picture tube and with the help of the video circuits it produces a picture. It is not cost effective to repair the tv, cheaper to replace.

Jan 30, 2011 | RCA 27V530T 27" TV

1 Answer

My t.v. whines when innitially plugged in. no picture (rca f36650) guide plus gemstar xbox ready entertainment series

The tv have a dead part call the FBT-Flyback transformer,a big black block of plastice with a red wire with a black cap hook it to the CRT-(Tv picture tube).The FBT-give the tv highvoltages to the CRT(Tv picture tube).This tv is old model of an analog tv probally can't find part for it anymore.

Dec 08, 2010 | RCA F36650 36" TV

1 Answer

Big black block in the middle of tv

Check youron screen menu setting for Closed Caption (CC) and turn it off.

Oct 29, 2009 | Philips Magnavox 27MS343S 27" TV

1 Answer

Picture only in middle of screen

Sounds like vertical problems on your circuit board. Unless you have some electronics experience you'd better take it in for repair.

The inside of a tube TV contains high voltages even when off and unplugged.


Oct 04, 2008 | Toshiba 36A50 36" TV

1 Answer

Black square

If the picture can be seen on the sides of the black square you need to go to the menu and find the text and turn it off
Usually in the closed caption section

Mar 12, 2008 | JVC AV-27230 27" TV

3 Answers


I had the same problem. A big black box in the middle of the screen that would temperarily go away if with the EDS button.
Go to the main menu and turn off closed captioning. It worked for me! :D

Sep 09, 2007 | Toshiba 27A34 27" TV

1 Answer

RCA 32" TV - Model #32F531T - Faded to black

Isolate filament voltage from CRT,i.e. unplug Crt socket from pix tube.Measure filament voltage on CRT PCB.If present,suspect bad pix tube.If missing,solder any/all connects in filament circuit,meaning CRT board first then main PCB.

Aug 08, 2007 | RCA 32F531T 32" TV

1 Answer

Picture stretched or "squeezed" inward from sides - black section on side.

Your problem is a common one and wht tells me this is when you wack the set. Theres a couple of coils that look like small towers that stand up and would have an L4#### number of some sort. They would be located toward the right side in the middle.. BUT for cryin out loud BE CAREFULL please!!!theres thousands of volts in a tv set. Oh and NO for sure this is not a Picture tube problem Good Luck

May 27, 2006 | RCA 27F530T 27" TV

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