Question about Toshiba 42HL196 42 in. LCD HDTV
The blinking light means the controller QA01 in the AV_TERM system board is booting and driving the TIMER/REC RED LED light accordingly. This failure mode is true for many conditions, not exclusively for the main PS board PE0071. It could be caused by many things, LOW B, SEINE, AV_TERM, LCD, PROTECT, etc.
Specifically for PE0071+12VDC circuit failure, which is the most common , listen for the LINE relays SR80, SR81 coming online.(ticking clock sound) If several (3) or more clicks are present when applying power to the TV set then suspect the +12, 20, +32 VDC inverter is faulty.
As a quick check, you can disconnect P807B. If the relays cycle every 1-2 seconds then is most definitely the +12VDC inverter. Check for voltage level at optocoupler Q881 pin 4 and this should not be cycling. This point is the VCC for the oscillator. Repair or replace board 75002913 as necessary.
TROUBLESHOOTING: (this is my own, not the OEM !, try at your own risk!)
For +12 VDC Inverter, suspect components:
Q880 STR-W6765 PSR (works really hot!!)
D884A and related switching circuit components.
Posted on Nov 08, 2009
I ama retired TV repair man and what you are hearing is the safety circuit trying to star and then shut down. Some where in the set there is a shorted component and the safety circuit is proyecting the set. There is no repair you can do the set must go in for service.
Posted on Mar 12, 2009
a 6ya expert can help you resolve that 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.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Oct 15, 2014 | LG 42LG50 42 in. LCD HDTV
Apr 08, 2017 | Samsung TXL2791F 27" TV
Feb 22, 2010 | Samsung WS32Z308P 32" TV
Feb 09, 2010 | Sony Grand WEGA KF50WE610 50" Rear...
Jun 14, 2009 | Refrigerators
Aug 05, 2008 | Televison & Video
Nov 14, 2007 | Toshiba 27AF42 27" TV
3,234 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: