Question about Zenith B25A74R 25" TV

1 Answer

FUSE BLOWS EVERYTIME I PLUG THE TV IN

OLD ZENITH # SEC3133H.

Posted by on

  • kat48071 Dec 02, 2008

    THANK YOU

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Sergeant:

    An expert that hasĀ over 500 points.

    Champion:

    An expert who has answered 200 questions.

  • Expert
  • 346 Answers

Change the horizontal output transistor
replace fuse with exact #
repairs must be done by a qualified tv repairman

Posted on Dec 02, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Fuse blows when I plug in the tv


Check the circuitry that leads the the fuse. Usually when a fuse blows something else is wrong. Something else has failed and is sending too much voltage to the fuse.

Oct 06, 2012 | Standard (CRT) Televisions

1 Answer

Every time i change the fuse it blows up


You have a shorted Horizontal Output transistor and a bad capacitor or two. Look for a bad resistor and you may have a bad flyback transformer [rare]. But yes the transistor is down!

Apr 11, 2010 | Zenith B25A02Z TV

1 Answer

Plug in no power


Check the fuse inside the TV. If fuse blows, there is a problem elsewhere.

The initial spark you are mentioning is due to degaussing coil. This is not routed through fuse.

Apr 07, 2010 | Zenith A36B41W 36" TV

2 Answers

Zenith 27" TV


One thing to try would be to unplug the set for about 10 seconds or so in case the microcontroller is out of sync and not responding to the power button. As far as lightening damaged sets, it does have a fuse but in my own experience, it rarely blows fast enough to protect the solid state circuits and is probably still good. If it still doesn't work when you plug it back in and assuming the fuse is good, then I would suspect a bad voltage regulator or even shorted transistor if it was on when the lightening struck. There are also possibilities of "swollen" surge damaged electrolytic capacitors that took the brunt of the lightening. Depending on the age and condition of the set, it may not be worth repair.

Oct 09, 2008 | Zenith C27A24T 27" TV

1 Answer

No power no sound


oh noh!!! I suggest you should an AVR (automatic voltage regulator), these will help to control the flactuations of power. try also check the power supply (its either 110 or 220 volts), just make sure it is compatible to your default power supply.

Feb 05, 2008 | RCA HD52W58 52" TV

2 Answers

RCA big screen tv


whenever fuse blows every time it is the indication of short circuit in tv. so please do not put fuse unless you know the cause of blowing fuse. these are the reasons of blowing fuse. 1 main filter cap.short. 2 rectifier diode short. 3 swithing transistor short 4 horizontal output transistor short 5 caps & diodes connected to flyback transformer short. 6 print short. 7 at last if every thing ok then flyback transformer defective. hope this will help. if you are not a tech person call skilled tech to fix it. good luck

Sep 24, 2007 | RCA P60828 TV

1 Answer

FUSE BLOWS EVERTIME I TURN MY TV ON. I CAN REPLACE THE FUSE AND DISCONNECT THE FLYBACK FROM THE CRT,TURN THE SET BACK ON ,CHECK THE FUSE IT WOULD STILL BE GOOD,BUT WHEN I REINSERT THE FLYBACK AND TURN THE...


Possibly a resistor that's becoming defective... it's changing value thus increasing current. like if the resistor has a rating of a 10k Ohm and now it's changing to a 30K Ohm and the current (amps) is supposed to be around .50Amps and now it's rising to .75Amps or higher, so it would blow the fuse so as not to further damage any other high voltage or sensetive component. Is the fuse you are replacing the same as rated for the tv? ie; 250V 1.25Amp FB (fast blow) or SB (slow blow) it should say on the circut board where the fuse plugs into.

Jul 17, 2007 | Zenith C27A24T 27" TV

1 Answer

TV won't power up and blows the fuse


A 10 year old RCa most likly has a bad Horizontal output transistor as well as the main High Voltage transformer and The transformer is no lonmger available from RCA. The replacement wont last longer then a year if your lucky. My advice on a set this old ?? Buy a newer one!!

Sep 11, 2006 | RCA F35670MB 35" TV

1 Answer

Fuse blows.


Please check for shorted diode or condenser at power section.

May 29, 2006 | Panasonic CT-27G14 27" TV

Not finding what you are looking for?
Zenith B25A74R 25" TV Logo

Related Topics:

84 people viewed this question

Ask a Question

Usually answered in minutes!

Top Zenith Standard (CRT) Televisions Experts

The Knight
The Knight

Level 3 Expert

68223 Answers

matt martin
matt martin

Level 3 Expert

1191 Answers

Anastasio Benjou

Level 2 Expert

99 Answers

Are you a Zenith Standard (CRT) Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...