Question about Zenith B27A11Z 27" TV

2 Answers

Help my set comes on then off. once i unplug the set from the outlet and plug it up again it comes on and then back off each time.

Posted by jack edwards on


2 Answers


  • Level 1:

    An expert who has achieved level 1.


    An expert that got 5 achievements.


    An expert whose answer got voted for 20 times.


    An expert who has written 20 answers of more than 400 characters.

  • Contributor
  • 68 Answers

Your TV swithes itself off, probably to standby to protect from doing further damage. If you, or an experienced friend have any idea of the power supply voltages in the set, then get him to monitor each voltage when you switch on. Bear in mind the chassis metal may be live at 120 to 300 volts, and keep clear of the line output transformer. You may have to use the old type analogue volt meter with a pointer and scale, as the reading may only be there for a second or so. Remove any dust so that you are sure to see where to connect probes. There is usually an electrolytic capacitor for each voltage to connect the probes to. If the negative side is at chassis potential, then clip the negative probe to this. If no reading is measured across one of the electrolytic capacitors, then this, or another component, may be short circuit. The rectifier diode or a fuse will have blown, or be overloaded. The fault is detected by protection circuits, which cause shutdown to standby. If you can locate the protection circuit, its input data (voltages) may give you a clue where to look.

Posted on Jun 19, 2007


Simpson Neal

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert who has written 50 answers of more than 400 characters.


    An expert who has answered 200 questions.

  • Expert
  • 236 Answers

Sounds like you have an overload somewhere in your TV. It's not a direct short in the power supply itself but one of the circuits powered by the power supply. Most likely it is in the horizontal output circuit. Stargazer

Posted on Jun 16, 2007


Add Your Answer


Uploading: 0%


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



Related Questions:

1 Answer

Tv won't turn on

Have a shop look at it, there is a power relay that either is causing this or something right around it is, seen this about five times over the last ten years in Hitachi sets. I had one customer who had it connected to a wall switch and from time to time had to unpower it several times but once on it was fine.....

Dec 15, 2012 | Hitachi 51F500 51" Rear Projection...

2 Answers

Every few months the compressor will not come on. It will try over and over but will not start. At the same time, the light does not come on when the door is opened. I can unplug the power cord and plug it...

The lighting circuit and the compressor electrical circuit are independent from each other once they go past the electrical terminal block, (where the power cord connects to, on the back of the fridge).
For the description of the problem, it sounds like you have a loose power cord terminal connection at the block, a defective power cord or power outlet.
Try connecting the fridge on the other power outlet (if it is connected to a regular dual outlet ), some times the contactors, over time, tend to loose the grip on the power cord plug and the contact is lost, when you remove the plug from the outlet and plug it back in, restores temporarily the contact again, or, the plug itself can be defective and loses contact. Replacing the power cord and using a different power outlet (even if it is a dual) will let you know if that where the problem was. If that doesn't solve the problem, let me know and will do some more troubleshooting.
Good Luck and keep me posted.

Jan 10, 2011 | Refrigerators

1 Answer

I have a PF erorr code on my oven screan

"POWER FAILURE" code, unplug the power from the range for 20 minutes or longer, plug back into the power outlet, set time and if the micro-processor didn't take a hit during the power failure you should be up and going once again.

Aug 26, 2010 | KitchenAid KDRP467KSS Dual Fuel (Electric...

1 Answer

I unplugged my model RP5435B clock and when I plugged it back in to the outlet the time will not set. How do I set the time again?

FIRST!!! Replace the "standby" 9V battery. Then unplug and replug... you should now be able to set the time.

Feb 03, 2010 | Audio Players & Recorders

3 Answers

We have a black screen with no audio. We are able to pull up the guide, but we can't watch tv or anything recorded on the DVR. How do we fix it?

No fatal error, try this. If you would, please unplug the receiver from the power outlet for about 2 minutes. After 2 minutes, plug it back in and let me know when it comes on (it will do this by itself). Once it does, it should be showing Message 015, “Acquiring Satellite Signal”.

Oct 10, 2009 | DISH Network 322 DTV Receiver

1 Answer

My HP Officejet 6500 wirless works with incoming faxes as long as autoanswer is on. However once it goes into sleep mode after sitting idle for a few minutes, it will not. If a fax comes in it will not...

Solution one: Plug the product directly into a wall outlet to make sure the power source functions correctly.
1. Disconnect the power cord from the back of the product.
2. Unplug the power cord from any power strips or surge suppressors, and then plug it directly into a wall outlet.
3. Reconnect the power cord to the back of the product.
4. Try to print again from the computer.
NOTE: If the product prints when plugged directly into a wall outlet, the power strip or surge suppressor might not allow enough voltage to reach the product.
If the issue persists , continue to the next solution.
Solution two: A semi-full reset returns the following settings to the factory defaults:
· User menu settings · Telephony parameter values · Country and language selection · Fax memory · Fax journal information · Speed dial and broadcast lists · Personal header information · Junk file numbers
1. Press the Power button to turn off the product, and then unplug the power cord from the wall outlet.2. Disconnect the power cord from the back of the product, and then wait 20 seconds. 3. Plug the power cord into the wall outlet. 4. Press and hold # and 6 while reconnecting the power cord to the back of the product. Press the Power button to turn on the product, and then follow the instructions that display on the control panel to select the product settings.

Oct 02, 2009 | HP Officejet 6500 Wireless All-in-One...

1 Answer

I loose my picture but i still get sound

Just try to reset so picture will come again, some LCD TVs have a reset button. If available and accessible, try using the reset buttons before using the steps below. Using the reset buttons can save time.
1. Unplug the LCD TV power cord from the power outlet.
2. Unplug any connected devices (DVD, Set-top boxes, etc...)
3. Press and hold the LCD TV power button for five seconds.
4. Plug the LCD TV power cord back into the power outlet and turn on the TV.
5. Open the on-screen menu to confirm that the LCD TV is responding again.
6. Turn off the LCD TV and reconnect the devices.
7. Turn on the LCD TV.

Hope it may help you;


Apr 22, 2009 | LG 42LC2D 42 in. LCD HDTV

1 Answer


The only solution at this point would be to get the power supply repair since new boards are not longer being manufactured. In about 95% of the time if the LCD doesn't power up or turns OFF by itself or need to be unplug for some time to make work again; those are the symptoms of a dying or defective power supply.
I service these power supplies, for more info write to [email protected]

Nov 27, 2008 | Akai PDP4294 42 in. EDTV-Ready Plasma...

1 Answer

Router keeps going off

Try to hard reset the router and re-flash or update the firmware of the device. Make sure to know all the internet settings before resetting the router so you can recongure it again.

You can ask your router manufacturer on where to download firmware.

Hope it will hel you.

Oct 08, 2008 | D-Link Vonage-enabled Wireless Router...

Not finding what you are looking for?
Zenith B27A11Z 27" TV Logo

Related Topics:

55 people viewed this question

Ask a Question

Usually answered in minutes!

Top Zenith Televison & Video Experts

The Knight
The Knight

Level 3 Expert

76511 Answers

matt martin
matt martin

Level 3 Expert

1258 Answers

Muntejaya Ginting
Muntejaya Ginting

Level 3 Expert

10422 Answers

Are you a Zenith Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides