Question about Zenith B27A11Z 27" TV
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
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
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
Tips for a great answer:
Dec 15, 2012 | Hitachi 51F500 51" Rear Projection...
Jan 10, 2011 | Refrigerators
Aug 26, 2010 | KitchenAid KDRP467KSS Dual Fuel (Electric...
Feb 03, 2010 | Audio Players & Recorders
Oct 10, 2009 | DISH Network 322 DTV Receiver
Oct 02, 2009 | HP Officejet 6500 Wireless All-in-One...
Apr 22, 2009 | LG 42LC2D 42 in. LCD HDTV
Dec 17, 2008 | Panasonic Televison & Video
Nov 27, 2008 | Akai PDP4294 42 in. EDTV-Ready Plasma...
Oct 08, 2008 | D-Link Vonage-enabled Wireless Router...
54 people viewed this question
Usually answered in minutes!